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3/8-16 Square Head Bolts
Square Head Bolts were once the most common form of bolt, until they were replaced by hex head bolts. They are covered under ANSI Standard B18.2.1 and are now most commonly used for aesthetic purposes to provide a rustic look .
3,231 Square Head Bolt, showing 200, (click on any line for more information)
| Buy Square Head Bolts from one of our FCH Network Members | ||||||||
|---|---|---|---|---|---|---|---|---|
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| MESAFAST | CA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/2 | square bolt | 24.0 |
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| MESAFAST | CA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 4 1/2 | square bolt | 93.0 |
|
| MESAFAST | CA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 | square bolt | 596.0 |
|
| Future Fastener | TX | Square Head Bolt | Steel | Galvanized | 3/8-16 x 1 3/4 | 3/8-16x1-3/4 square head machine bolt hot dip galvanized | 500 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 3 | 3/8-16 x 3 square head bolt gr. 2 zinc plated | 503 |
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| Future Fastener | TX | Square Head Bolt | Steel | Galvanized | 3/8-16 x 3/4 | 3/8-16 x 3/4 square head bolt galv | 1600 |
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| Future Fastener | TX | Square Head Bolt | Steel | Galvanized | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 sq hd machine bolt galv. | 300 |
|
| Jackson | MS | Square Head Bolt | Grade 2 | Galvanized | 3/8-16 x 2 1/2 | square bolt hdg | 295 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 1 1/4 | square bolt gr. 2 | 2445 |
|
| YANKEE | NH | Square Head Bolt | Steel | Plain | 3/8-16 x 4 | 3/8-16 x 4 square hd bolt | 334 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 4 | a307 gra square hd m/b low carb hdg b18.2.1 | 275 |
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| ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 a307 gra square hd machine bolt low carb zp | 480 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 3/8-16 x 6 | 3/8-16x6 (pt) coarse a307 gra square hd machine bolt low carb pln unc | 100 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 1 | a307 gra square hd m/b low carb hdg | 21 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 1 1/4 | a307 gra square hd m/b low carb hdg | 250 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 1 1/2 | a307 gra square hd m/b low carb hdg | 1,143 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 6 | a307 gra square hd m/b low carb hdg | 250 |
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| ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 3/8-16 x 6 | a307 gra square hd m/b low carb zp | 175 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 3/8-16 x 1 1/2 | (pt) coarse a307 gra square hd m/b low carb | 50 |
|
| ASMC | IL | Square Head Bolt | Grade A | Plain | 3/8-16 x 1 | (ft) coarse a307 gra square hd m/b low carb | 250 |
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| ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 3/8-16 x 1 1/2 | a307 gra square hd m/b low carb zp b18.2.1 | 750 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 3 | a307 gra square hd m/b low carb hdg b18.2.1 | 325 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 3/8-16 x 2 | (pt) coarse a307 gra square hd m/b low carb | 350 |
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| GLF | OH | Square Head Bolt | Grade A | Plain | 3/8-16 x 3 | 3/8-16x3 square hd bolt a307 stl pln b18.2.1 () () | 28 |
|
| Ababa | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 5 1/2 | 3/8-16 x 5-1/2 sq hd bolt steel pln b18.2.1 | 189 |
|
| Ababa | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/2 | 3/8-16 x 2 1/2 sq hd bolt steel pln b18.2.1 | 1 |
|
| Mansco | MI | Square Head Bolt | Grade 8 | Plain | 3/8-16 x 1 | 3/8-16x1 square hd machine bolt gr8 pln 100/box | 350 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 1/4 | bolt square machine f/t | 952 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 5 1/2 | bolt square machine | 1100 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 3/4 | bolt square machine | 750 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 3/4 | bolt square machine | 300 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 3 1/2 | 3/8-16x3 1/2 bolt square machine plain | 300 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/2 | bolt square mach f/t | 34118 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 | bolt square machine f/t | 285 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/2 | bolt square machine | 1350 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 3 | bolt square machine f/t 3/8 blank | 220 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 4 | bolt square machine | 17 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 6 | bolt square machine (5 1/2 inches thread) | 242 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 7/8 | bolt square machine | 5280 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 8 1/2 | bolt square machine | 39 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 4 1/2 | bolt square machine | 400 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 | bolt square machine | 15056 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 1 3/4 | bolt square machine | 4200 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 7 | bolt square machine | 6 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/4 | square m/b machine bolt | 200 |
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| Liberty | IL | Square Head Bolt | Brass | Plain | 3/8-16 x 2 | square hd m/b brass | 1,500 |
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| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | square m/b 1 tl poor m/b 1 tl poor | 840 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Yellow | 3/8-16 x 7 1/2 | square mac hine bolt 1 1/2tl & yel hine bolt 1 1/2tl & yel | 89 |
|
| Liberty | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 11 | square m/b 1 5/8 tl &rust m/b 1 5/8 tl &rust | 226 |
|
| Liberty | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 | square m/b 1 1/2tl bolt 1 1/2tl | 250 |
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| Liberty | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 1 3/4 | square m/b machine bolt | 720 |
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| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | square m/b f/t | 559 |
|
| Liberty | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 15 | square m/b 1 7/8 tl poor zi m/b 1 7/8 tl poor zi | 410 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | square m/b machine bolt | 449 |
|
| Liberty | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 4 | square m/b 1 9/16tl bolt 1 9/16tl | 297 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 1/2 | square m/b no mark m/b no mark | 967 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 7 1/2 | square mac hine bolt 1 1/2tl poor hine bolt 1 1/2tl poor | 804 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Yellow | 3/8-16 x 4 1/4 | square m/b & machine bolt & | 90 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Yellow | 3/8-16 x 3 1/2 | square m/b & machine bolt & | 100 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 7 1/2 | square m/b 1 1/2 tl m/b 1 1/2 tl | 1,499 |
|
| Liberty | IL | Square Head Bolt | Steel | Zinc/Yellow | 3/8-16 x 5 1/2 | 3/8-16x5-1/2 square m/b & machine bolt & | 146 |
|
| Komar | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 1 | 3/8-16x1 square hd machine bolt | 400 |
|
| Komar | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16x3 1/2 square hd machine bolt zinc | 1100 |
|
| Komar | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 3/4 | 3/8-16x3/4 square hd machine bolt | 1500 |
|
| American | NY | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 6 | square m/b zp | 44 |
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| American | NY | Square Head Bolt | Steel | Black Oxide | 3/8-16 x 2 | square hd m/b black ox | 2380 |
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| American | NY | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 1/4 | square hd m/b pl | 500 |
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| American | NY | Square Head Bolt | Steel | Zinc/Yellow | 3/8-16 x 2 1/2 | square hd m/b zy | 1000 |
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| American | NY | Square Head Bolt | Steel | Plain | 3/8-16 x 4 1/2 | square m/b | 50 |
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| American | NY | Square Head Bolt | Steel | Black Oxide | 3/8-16 x 4 1/2 | square hd m/b black ox | 10 |
|
| American | NY | Square Head Bolt | Steel | Plain | 3/8-16 x 3 1/2 | square bolt | 150 |
|
| American | NY | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 1/4 | square m/s bolt pl | 1800 |
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| American | NY | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/4 | square hd bolt | 2100 |
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| American | NY | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/4 | 3/8-16 x 1-1/4 square machine bolt zinc plate | 300 |
|
| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 1 1/2 | square bolt | 390 |
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| MFS | KS | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 11/2 | square | 40 |
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| MFS | KS | Square Head Bolt | Grade 2 | Zinc/Yellow | 3/8-16 x 1 | square | 25 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 1 1/4 | square bolt | 633 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 1 3/4 | square bolt | 363 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 3 1/2 | square bolt | 317 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 3 | f/t square hd m/b astm a307 | 350 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 | f/t square hd m/b astm a307 | 800 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 3/4 | f/t square hd m/b astm a307 | 600 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 2 | f/t square hd m/b astm a307 | 500 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | f/t square hd m/b astm a307 | 700 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | square m/b std thrd fsb astm a307 | 700 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 2 | square m/b std thrd fsb astm a307 | 500 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/2 | square m/b std thrd fsb astm a307 | 650 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 3/4 | square m/b std thrd fsb astm a307 | 600 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/2 | square m/b std thrd fsb astm a307 | 450 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 4 1/2 | square m/b std thrd fsb astm a307 | 250 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 3 | square m/b std thrd fsb astm a307 | 350 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 4 | square m/b std thrd fsb astm a307 | 250 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 6 | square m/b std thrd fsb astm a307 | 150 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 5 1/2 | square m/b std thrd fsb astm a307 | 200 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 3 1/2 | square m/b std thrd fsb astm a307 | 300 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 3/8-16 x 5 | square m/b std thrd fsb astm a307 | 200 |
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| XL Screw | GA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 | f/t square hd m/b astm a307 zp | 800 |
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| XL Screw | GA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 | f/t square hd m/b astm a307 zp | 500 |
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| XL Screw | GA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/4 | f/t square hd m/b astm a307 zp | 700 |
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| SWACO | OH | Square Head Bolt | Grade A | Plain | 3/8-16 x 1 3/4 | 3/8-16x1 3/4 a307 gr a square hd bolt p | 105 |
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| SWACO | OH | Square Head Bolt | Grade A | Plain | 3/8-16 x 2 3/4 | 3/8-16x2 3/4 a307 gr a square hd bolt p | 50 |
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| MidStates | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 3 3/4 | square hd bolt | 49 |
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| MidStates | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 5 1/2 | 3/8-16x5-1/2 square hd bolt | 132 |
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| WDMB | IA | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 x 4 7/16 | bolt u sq (18 8) 3/8-16x4x4 7/16 drw (W0S0) (W0S0) (W0S0) | 396 |
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| WDMB | IA | Square Head Bolt | Steel | Plain | 3/8-16 x 3 x 6 1/4 | bolt u sq st (m565) 3/8-16x3x6 1/4x3 drw (W040) (W040) (W040) | 283 |
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| Komar | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 3/4 | square hd m/b | 1500 |
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| Komar | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | square hd m/b | 1100 |
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| Komar | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 1 | square hd m/b | 400 |
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| Purchase | MO | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 square hd bolt zinc | 313 |
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| IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 square hd mach bolt a307 steel zinc yellow | 707 |
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| IPC | VA | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 2 1/4 | 3/8-16x2 1/4 square hd mach bolt grade 2 cr3 zinc-rohs | 350 |
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| IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/8-16 x 2 | 3/8-16x2 partial thread square hd mach bolt a307 gr a steel zinc yellow | 180 |
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| IPC | VA | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 2 | 3/8-16x2 square hd mach bolt 18-8 ss | 1 |
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| IPC | VA | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 square hd mach bolt 18-8 ss | 250 |
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| IPC | VA | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 2 1/2 | 3/8-16x2 1/2 square hd mach bolt grade 2 cr3 zinc-rohs | 4,000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 12 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 4 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/8-16 x 10 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 10 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 16 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 4 1/4 | bolt & c/s square boltsquare b18.2.1 | 2582 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 1 1/2 | bolt & c/s square boltsquare b18.2.1 | 3100 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/8-16 x 6 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/8-16 x 8 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 2 1/4 | bolt & c/s square boltsquare b18.2.1 | 12000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 8 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 2 | bolt & c/s square boltsquare b18.2.1 | 2600 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 1 | bolt & c/s sq uare boltsquare b18.2.1 | 5000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 6 | bolt & c/s square boltsquare b18.2.1 | 3800 |
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| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 | square m/b machine bolt | 330 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 3/4 | 3/8-16x3/4 square head bolt a307 hdg b18.2.1 | 987 |
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| FasSpcMfg | FL | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 2 1/2 | square m/b 18-8 s/s | 1 |
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| FasSpcMfg | FL | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/2 | square m/b 18-8 s/s | 5 |
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| MtrcSpec | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 square hd bolt | stock |
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| ISSCO | MO | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 3 1/2 | 1600 |
| |
| ISSCO | MO | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 4 | 650 |
| |
| ISSCO | MO | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 7 1/2 | 6080 |
| |
| ISSCO | MO | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 1 1/2 | 2050 |
| |
| ISSCO | MO | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 3 | 3495 |
| |
| SIS | AZ | Square Head Bolt | Steel | Zinc/Yellow | 3/8-16 x 3 1/2 | 3/8-16x3-1/2 square head machine bolt steel zinc yellow per spec tt-5 | 129600 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 square bolts plain b18.2.1 | 6 |
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| B & K FAST | PA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 square bolts zinc b18.2.1 | 854 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 3/8-16 x 2 | 3/8-16 x 2 square bolts plain b18.2.1 | 215 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 3/8-16 x 7 1/2 | 3/8-16 x 7 1/2 square bolts plain b18.2.1 | 2 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 1 | 3/8-16x1 square machine bolt plain | 15,000 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 square machine bolt plain | 12.500 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16x1 1/2 square machine bolt plain | 12.500 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 | 3/8-16x2 square machine bolt plain | 10,000 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/2 | 3/8-16x2 1/2 square machine bolt plain | 7.500 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/4 | 3/8-16x2 1/4 square machine bolt plain | 7.500 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 3 | 3/8-16x3 square machine bolt plain | 6.250 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 3 1/2 | 3/8-16x3 1/2 square machine bolt plain | 5,000 |
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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 3/4 | 3/8-16x2 3/4 square machine bolt plain | 7.500 |
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| QFC | TX | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 1 | 3/8-16x1 sq head bolt gr2 zinc b18.2.1 | 70 |
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| BHAM | TX | Square Head Bolt | Steel | Galvanized | 3/8-16 x 1 3/4 | square hdg | 8,203 |
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| BHAM | TX | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 4 1/2 | a307 square hd mach bolt hdg | 257 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 sq hd mach bolt | 200 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 sq hd mach bolt | 299 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 sq hd mach bolt | 225 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 | 3/8-16 x 2 sq hd mach bolt pltd | 186 |
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| ScrewsInc | OH | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | 500 |
| |
| Lippin | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 | square head bolt plain | 820 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 1 3/4 | 3/8-16x1-3/4 (pt) square bolt steel a307 plain b18.2.1 | 250 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 2 3/4 | 3/8-16x2 3/4 (pt) bolts square head bolts a307 grade a square head bolt plain (inch) b18.2.1 | 400 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 5 | 3/8-16x5 (pt) bolts square head bolts a307 grade a square head bolt plain (inch) b18.2.1 | 150 |
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| SRF | AL | Square Head Bolt | Grade 2 | Galvanized | 3/8-16 x 2 1/2 | square hd bolt | 1,434 |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 3 1/2 | square hd bolt | 38 |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 4 1/4 | square hd bolt | 398 |
|
| SRF | AL | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 5 | square hd bolt | 25 |
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| SRF | AL | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 5 | square hd bolt | 14 |
|
| SRF | AL | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 6 | square hd bolt | 25 |
|
| SRF | AL | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 3/4 | square hd bolt | - |
|
| SRF | AL | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 7/8 | square hd bolt | 441 |
|
| SRF | AL | Square Head Bolt | Grade 2 | Galvanized | 3/8-16 x 1 | square hd bolt | 10 |
|
| SRF | AL | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 1 1/2 | square hd bolt | 88 |
|
| SRF | AL | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 2 | square hd bolt | - |
|
| ASFCORP | MI | Square Head Bolt | Grade A | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 sq hd blt a307 gr a tri zn fe/zn 5an | 340 |
|
| OBRIEN | OH | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/2 | square hd bolt | 338 |
|
| OBRIEN | OH | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | square hd bolt | 275 |
|
| OBRIEN | OH | Square Head Bolt | Steel | Plain | 3/8-16 x 1 | square hd mach bolt | 750 |
|
| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 3/8-16 x 11 | square hd bolt hdg b18.2.1 | 108 |
|
| THRDFAST | FL | Square Head Bolt | Grade 5 | Plain | 3/8-16 x 2 | gr5 square hd bolt b18.2.1 | 10 |
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| THRDFAST | FL | Square Head Bolt | Steel | Plain | 3/8-16 x 2 1/2 | square hd bolt b18.2.1 | 3 |
|
| THRDFAST | TN | Square Head Bolt | Steel | Galvanized | 3/8-16 x 4 | square hd bolt hdg b18.2.1 | 174 |
|
| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 3/8-16 x 1 | square hd bolt hdg b18.2.1 | 15 |
|
| KBS | TN | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 square hd mach.bolt b18.2.1 | 2,048 |
|
| WSB | KY | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/4 | blt sqr sbrz (pl) 3/8-16x1 1/4 b18.2.1 | 682 |
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| GUIDON | NJ | Square Head Bolt | Grade 2 | Black Oxide | 3/8-16 x 3 | A307A | 450 |
|
| FMP | MA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 3/4 | square bolt | 151 |
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| FMP | MA | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 | square bolt | 455 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/4 | Square head set screw cup point STAINLESS STEEL | 17 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1 1/2 | Square head set screw cup point STAINLESS STEEL | 48 |
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| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 2 1/4 | Square head set screw cup point STAINLESS STEEL | 5 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 2 | Square head set screw cup point STAINLESS STEEL | 400 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 | Square head set screw cup point STAINLESS STEEL | 75 |
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