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Square Head Bolts, Steel or Grade A
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 .
> 200 matches, . 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 | |
| YANKEE | NH | Square Head Bolt | Steel | Plain | 5/16-18 x 3 | 5/16-18 x 3 square hd bolt | 136 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 5/16-18 x 2 | 5/16-18 x 2 square hd bolt | 192 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 5/16-18 x 1 3/4 | 5/16-18 x 1-3/4 square head bolt | 160 |
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| 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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| YANKEE | NH | Square Head Bolt | Grade A | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1-1/2 square head bolt astm a307 | 106 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 square hd bolt | 2 |
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| YANKEE | NH | Square Head Bolt | Grade A | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2-1/2 square head bolt astm a307 | 292 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 square hd bolt | 120 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 5 | 1/2-13 x 5 square hd bolt | 11 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 5/8-11 x 2 | 5/8-11 x 2 square hd bolt | 19 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11 x 2 1/2 square hd bolt | 7 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 5/8-11 x 4 | 5/8-11 x 4 square hd bolt | 20 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 3/4-10 x 2 1/4 | 3/4-10 x 2 1/4 square hd bolt | 70 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10 x 3 1/2 square hd bolt | 17 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 3/4-10 x 4 | 3/4-10 x 4 square hd bolt | 35 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 3/4-10 x 4 1/2 | 3/4-10 x 4 1/2 square hd bolt | 2 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 3/4-10 x 6 | 3/4-10 x 6 square hd bolt | 26 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 7/8-9 x 4 | 7/8-9 x 4 square hd bolt | 17 |
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| METRO IND | OH | Square Head Bolt | Steel | Plain | M14 x 125 | m14 x 125 sq. leveling bolt plate 25mm thick steel | 32 |
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| Set Screw | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 1 | square knurled cup point heat treat r/c-45 per print | inquire |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 6 1/2 | 1/2-13x6 1/2 bolt square machine plain | 80 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1-8 x 5 | bolt square machine | 30 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/4-20 x 2 1/2 | bolt square machine black | 350 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/4-20 x 3 1/4 | bolt square machine | 200 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 1/4-20 x 3 1/4 | bolt square machine | 1500 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 | bolt square machine | 3500 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 2 1/4 | bolt square machine f/t | 1220 |
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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 | 7/16-14 x 4 3/4 | bolt square machine | 170 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 1 3/4 | bolt square machine | 600 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 5/8-11 x 8 1/2 | bolt square machine | 50 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 5/8-11 x 1 1/4 | bolt square machine | 540 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 5/8-11 x 1 1/4 | bolt square machine | 215 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 7/8-9 x 1 1/2 | bolt square machine | 105 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 7/8-9 x 16 | bolt square machine | 2 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 7/8-9 x 1 3/4 | bolt square machine | 65 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 7/8-9 x 18 | bolt square machine | 4 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 7/8-9 x 3 1/4 | bolt square machine | 93 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 7/8-9 x 3 1/4 | bolt square machine | 42 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 7/8-9 x 4 1/4 | bolt square machine | 25 |
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| OneMonroe | NC | Square Head Bolt | Steel | Galvanized | 5/16-18 x 3 | 5/16-18 x 3 galvanized square head bolt | 250 |
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| OneMonroe | NC | Square Head Bolt | Grade A | Zinc/Clear | 5/16-18 x 3 | 5/16-18 x 3 a307a zinc finish square head bolts | 500 |
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| OneMonroe | NC | Square Head Bolt | Grade A | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 a307a plain finish square head bolt | 124 |
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| OneMonroe | NC | Square Head Bolt | Grade A | Zinc/Clear | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 square head bolt a307a zinc finish | 322 |
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| OneMonroe | NC | Square Head Bolt | Grade A | Plain | 5/8-11 x 3 1/2 | 5/8-11 x 3 1/2 a307a plain finish square head bolt | 74 |
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| OneMonroe | NC | Square Head Bolt | Grade A | Plain | 5/8-11 x 4 | 5/8-11 x 4 a307a plain finish square head bolt | 103 |
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| OneMonroe | NC | Square Head Bolt | Grade A | Plain | 3/4-10 x 4 | 3/4-10 x 4 a307a plain finish square head bolt | 65 |
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| OneMonroe | NC | Square Head Bolt | Grade A | Plain | 7/8-9 x 5 | 7/8-9 x 5 a307a plain finish square head bolt | 20 |
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| OneMonroe | NC | Square Head Bolt | Steel | Plain | #6 | 6 square corner flush bolt | 1 |
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| OneMonroe | NC | Square Head Bolt | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 sq hd c/s-pln | 40 |
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| OneMonroe | NC | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | 1/2-13 x 4 sq hd c/s-pln | 119 |
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| OneMonroe | NC | Square Head Bolt | Steel | Plain | 5/8-11 x 12 | 5/8-11 x 12 sq hd c/s-plain | 36 |
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| OneMonroe | NC | Square Head Bolt | Steel | Plain | 5/8-11 x 12 | 5/8-11 x 12 sq hd c/s-hdg | 68 |
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| OneMonroe | NC | Square Head Bolt | Steel | Plain | 1-8 x 8 | 1-8 x 8 square t-bolt w/4 thread | 171 |
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| OneMonroe | NC | Square Head Bolt | Steel | Plain | 3/16 | packing graphited synthetic 3/16 square c/s (47 feet per pound) | 1.1 |
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| 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 | 1000 |
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| 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 | Plain | 5/6-18 x 5 1/2 | square bolt | 250 |
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| American | NY | Square Head Bolt | Steel | Plain | 1/4-20 x 5/8 | square m/b | 100 |
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| American | NY | Square Head Bolt | Steel | Plain | 5/16-18 x 2 1/2 | square m/b | 50 |
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| American | NY | Square Head Bolt | Steel | Cadmium | 5/16-18 x 3 | square bolt | 700 |
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| American | NY | Square Head Bolt | Steel | Plain | 5/16-18 x 5 | square bolt | 700 |
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| American | NY | Square Head Bolt | Steel | Black Oxide | 1/4-20 x 3/4 | square m/b black ox | 5150 |
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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 |
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| American | NY | Square Head Bolt | Steel | Plain | 1/4-20 x 1 1/4 | square m/b | 10000 |
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| American | NY | Square Head Bolt | Steel | Plain | 5/16-18 x 1 1/2 | square m/b | 100 |
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| American | NY | Square Head Bolt | Steel | Plain | 5/16-18 x 1 3/4 | square m/b f/t black | 60 |
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| American | NY | Square Head Bolt | Steel | Plain | 3/8-16 x 3 1/2 | square bolt | 150 |
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| American | NY | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 1/2 | square m/b zp | 50 |
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| American | NY | Square Head Bolt | Steel | Zinc/Green | 1/2-13 x 2 | square m/b olive drab | 400 |
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| American | NY | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/4 | square m/b | 61 |
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| American | NY | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 3 1/2 | square m/b zp | 50 |
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| 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 |
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| Ababa | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | 1/2-13 x 4 sq hd bolt steel pln b18.2.1 | 1 |
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| Ababa | CA | Square Head Bolt | Steel | Zinc/Clear | 3/4-10 x 2 3/4 | 3/4-10 x 2 3/4 sq hd bolt steel znc b18.2.1 | 127 |
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| Ababa | CA | Square Head Bolt | Steel | Zinc/Clear | 5/8-11 x 2 | 5/8-11 x 2 sq hd blt steel znc b18.2.1 | 6 |
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| Ababa | CA | Square Head Bolt | Steel | Zinc/Clear | 5/8-11 x 2 1/2 | 5/8-11 x 2 1/2 sq hd blt steel znc b18.2.1 | 156 |
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| Ababa | CA | Square Head Bolt | Steel | Plain | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 sq hd blt steel pln b18.2.1 | 200 |
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| Ababa | CA | Square Head Bolt | Steel | Zinc/Clear | 1/4-20 x 2 | 1/4-20 x 2 sq hd blt full thrd steel znc b18.2.1 | 1390 |
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| 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 |
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| Ababa | CA | Square Head Bolt | Steel | Plain | 1/4-20 x 2 | 1/4-20 x 2 sq hd blt full thrd steel pln b18.2.1 | 2190 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 5/8-11 x 7 | 5/8-11 x 7 square hd bolt | 38 |
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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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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 31 | 5/8-11x31 square head bolt a307 hdg 6 thd b18.2.1 | 2 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 33 | 5/8-11x33 square head bolt a307 hdg 6 thd b18.2.1 | 3 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 34 | 5/8-11x34 square head bolt a307 hdg 6 thd b18.2.1 | 3 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 37 | 5/8-11x37 square head bolt a307 hdg 6 thd b18.2.1 | 3 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 38 | 5/8-11x38 square head bolt a307 hdg 6 thd b18.2.1 | 2 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 55 | 5/8-11x55 square head bolt a307 hdg 6 thd b18.2.1 | 2 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 56 | 5/8-11x56 square head bolt a307 hdg 6 thd b18.2.1 | 2 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 58 | 5/8-11x58 square head bolt a307 hdg 6 thd b18.2.1 | 2 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 63 | 5/8-11x63 square head bolt a307 hdg 6 thd b18.2.1 | 2 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 12 | 3/4-10x12 sq. head bolt a307 hdg b18.2.1 | 22 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 13 | 3/4-10x13 sq. head bolt a307 hdg b18.2.1 | 14 |
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| B & K FAST | PA | Square Head Bolt | Steel | Galvanized | 1/4-20 x 1 | 1/4-20 x 1 galv square bolts b18.2.1 | 79 |
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| B & K FAST | PA | Square Head Bolt | Steel | Galvanized | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 galv square bolts b18.2.1 | 53 |
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| B & K FAST | PA | Square Head Bolt | Steel | Galvanized | 5/8-11 x 4 | 5/8-11 x 4 galv square bolts b18.2.1 | 581 |
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| B & K FAST | PA | Square Head Bolt | Steel | Galvanized | 5/8-11 x 4 1/2 | 5/8-11 x 4 1/2 galv square bolts b18.2.1 | 23 |
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| B & K FAST | PA | Square Head Bolt | Steel | Galvanized | 3/4-10 x 7 1/2 | 3/4-10 x 7 1/2 galv square bolts b18.2.1 | 4 |
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| B & K FAST | PA | Square Head Bolt | Steel | Galvanized | 3/4-10 x 14 | 3/4-10 x 14 galv square bolts b18.2.1 | 1 |
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| B & K FAST | PA | Square Head Bolt | Steel | Galvanized | 7/8-9 x 16 | 7/8-9 x 16 galv square bolts 6 thread b18.2.1 | 32 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/4-20 x 5 1/2 | 1/4-20 x 5 1/2 square bolts plain b18.2.1 | 20 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 square bolts plain b18.2.1 | 1126 |
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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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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 square bolts plain b18.2.1 | 2788 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 square bolts plain b18.2.1 | 323 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 square bolts plain full thread b18.2.1 | 1 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 square bolts plain b18.2.1 | 197 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 3 | 1/2-13 x 3 square bolts plain b18.2.1 | 244 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/4 | 1/2-13 x 3 1/4 square bolts plain b18.2.1 | 495 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 square bolts plain b18.2.1 | 8 |
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