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1 1/2 inch length 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 .
108 results, (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 | |
| 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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| Jackson | MS | Square Head Bolt | Grade 2 | Galvanized | 1/2-13 x 1 1/2 | square bolt hdg | 112 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Zinc/Clear | 5/16 x 1 1/2 | nc square bolt gr. 2 | 7 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8 x 1 1/2 | nc square bolt gr. 2 | 2 |
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| Jackson | MS | Square Head Bolt | Grade 5 | Zinc/Clear | 1/2-13 x 1 1/2 | nc square bolt gr.5 | 36 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 1/2 | square bolt gr. 2 | 427 |
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| 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 | Plain | 1/4-20 x 1 1/2 | square bolt | 100.0 |
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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 | Grade 5 | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1-1/2 square head bolt grade 5 plain finish | 53 |
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| Hayes | CA | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 square hd bolt pln | 7 |
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| Cal Fastenrs | CA | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | square hd mach bolt emer excess | 825 |
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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 | Plain | 5/8-11 x 1 1/2 | (ft) coarse a307 gra square hd m/b low carb | 129 |
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| ASMC | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 1/2 | coarse gr5 square hd m/b med carb | 35 |
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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 |
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| ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 1/4-20 x 1 1/2 | a307 gra square hd m/b low carb zp | 1,850 |
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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 | Plain | 1/4-20 x 1 1/2 | (pt) coarse a307 gra square hd m/b low carb | 88 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/4-20 x 1 1/2 | a307 gra square hd m/b low carb hdg | 3,309 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 5/16-18 x 1 1/2 | a307 gra square hd m/b low carb hdg b18.2.1 | 625 |
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| ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 1/2-13 x 1 1/2 | a307 gra square hd m/b low carb zp b18.2.1 | 229 |
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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 | 1/2-13 x 1 1/2 | bolt square machine | 40 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | bolt square machine f/t | 350 |
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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 | Plain | 5/8-11 x 1 1/2 | bolt square machine | 1065 |
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| Liberty | IL | Square Head Bolt | Steel | Plain | 1/4-20 x 1 1/2 | square m/b machine bolt | 670 |
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| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | square bolt | 900 |
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| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 1/2 | square m/b machine bolt | 300 |
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| Liberty | IL | Square Head Bolt | Steel | Zinc/Clear | 1/4-20 x 1 1/2 | square m/b machine bolt | 990 |
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| Komar | AR | Square Head Bolt | Steel | Zinc/Yellow | 5/16-18 x 1 1/2 sq hd machine bolt zinc yellow | 450 |
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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 | 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/Yellow | 5/8-11 x 1 1/2 | square m/b zy | 100 |
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| American | NY | Square Head Bolt | Steel | Plain | 1 1/4 x 1 1/2 | square bolt | 25 |
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| American | NY | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/2 | square hd bolt | 600 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 1 1/2 | square bolt | 390 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 5/8-11 x 1 1/2 | square bolt | 494 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 5/16-18 x 1 1/2 | square bolt | 757 |
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| METRO IND | OH | Square Head Bolt | Grade 5 | Plain | 5/8-11 x 1 1/2 | square hd bolt | 25 |
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| Fastener | OH | Square Head Bolt | Grade A | Plain | 3/4-10 x 1 1/2 | square head bolt 3/4-10x1-1/2 a307 plain | 74 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 1/4-20 x 1 1/2 | f/t square hd m/b astm a307 | 1,500 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 5/16-18 x 1 1/2 | f/t square hd m/b astm a307 | 1,000 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 5/8-11 x 1 1/2 | f/t square hd m/b astm a307 | 210 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/2 | f/t square hd m/b astm a307 | 380 |
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| XL Screw | GA | Square Head Bolt | Steel | Plain | 1/4-20 x 1 1/2 | square m/b std thrd fsb astm a307 | 1,500 |
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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 | Zinc/Clear | 1/2-13 x 1 1/2 | f/t square hd m/b astm a307 zp | 380 |
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| XL Screw | GA | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | f/t square hd m/b astm a307 zp | 1,200 |
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| XL Screw | GA | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | square hd m/b std thrd fsb astm a307 zp | 1,200 |
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| SWACO | OH | Square Head Bolt | Grade A | Plain | 3/4-10 x 1 1/2 | 3/4-10x1 1/2 a307 gr a square hd bolt p | 89 |
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| SWACO | OH | Square Head Bolt | Grade A | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 a307 gr a square hd bolt p | 157 |
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| MidStates | MI | Square Head Bolt | Grade 2 | Plain | 3/4-10 x 1 1/2 | square hd bolt | 69 |
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| MidStates | MI | Square Head Bolt | Grade 5 | Plain | 3/4-10 x 1 1/2 | square hd bolt | 13 |
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| IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 5/16-18 x 1 1/2 | 5/16-18x1 1/2 square hd mach bolt a307 gr a steel zinc yellow | 9,075 |
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| CIF | IL | Square Head Bolt | Grade 8 | Black Oxide | 5/8-11 x 1 1/2 | 5/8-11x1 1/2 square head machine bolt grade 8 black oxide with wkw headmark (5859) (5859) | 5859 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 1/2 | bolt & c/s square boltsquare fulthr b18.2.1 | 3201 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 5/8-11 x 1 1/2 | bolt & c/s square boltsquare b18.2.1 | 15000 |
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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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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 a307 gr a square hd bolt p 747172 b18.2.1 | 157 |
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| Delta | TX | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/2 | square hd bolt hdg 1/2-13 x 1 1/2 | 50 |
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| Delta | TX | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | square hd bolt | 1512 |
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| WDMB | IA | Square Head Bolt | Steel | Plain | 1/2-9 x 1 1/2 | t boltnl lnr sq st (pl) 1/2-9x1 1/2 usa (W020) | 825 |
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| FasSpcMfg | FL | Square Head Bolt | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 1/2 | square m/b 316 stainless | 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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| ISSCO | MO | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 1/2 | 18-8 | 120 |
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| ISSCO | MO | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 1/2 | 695 |
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| ISSCO | MO | Square Head Bolt | Grade 2 | Plain | 5/8-11 x 1 1/2 | 533 |
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| ISSCO | MO | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 1 1/2 | 2050 |
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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 | 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 | 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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| Kanebridge | IL | Square Head Bolt | Steel | Plain | 5/16-18 x 1 1/2 | 5/16-18x1 1/2 square machine bolt plain | 15,000 |
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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 | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 square machine bolt plain | 6.250 |
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| OSSCO | RI | Square Head Bolt | Steel | Plain | 5/16-18 x 1 1/2 | 5/16-18x1 1/2 square hd mach bolt b18.2.1 | 29 |
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| OSSCO | RI | Square Head Bolt | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16x1 1/2 square hd mach bolt b18.2.1 | 434 |
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| Bostwick | IN | Square Head Bolt | Grade 5 | Plain | 5/8-11 x 1 1/2 | 5/8-11 x 1 1/2 square hd bolt gr 5 b18.2.1 | 9 |
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| Bostwick | IN | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 square hd bolt grade 2 b18.2.1 | 70 |
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| BoltCraft | NE | Square Head Bolt | Steel | Plain | 3/4-10 x 1 1/2 | 3/4-10 x 1-1/2 square head machine bolt plain 150/ctn | inquire |
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| BoltCraft | NE | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/2 | 1/2-13 x 1-1/2 square head machine bolt hdg 600/ctn | inquire |
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| ZAL INDUS | CA | Square Head Bolt | Grade 2 | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 sq hd mach bolt grade 2 pltd | 5,000 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 sq hd mach bolt hot dip galv | 400 |
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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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| Lippin | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/2 | square head bolt plain | 80 |
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| SRF | AL | Square Head Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 1 1/2 | square hd bolt | 88 |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 1/2 | square hd bolt | 10 |
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| CNB | IL | Square Head Bolt | Grade 2 | Plain | 1/4-20 x 1 1/2 | square m/b | 400 |
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| CNB | IL | Square Head Bolt | Grade 2 | Zinc/Clear | 1/4-20 x 1 1/2 | square m/b | 200 |
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| OBRIEN | OH | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 1/2 | square m/b | 280 |
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| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 5/8-11 x 1 1/2 | square hd bolt hdg b18.2.1 | 10 |
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| KBS | TN | Square Head Bolt | Steel | Plain | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 square hd mach.bolt b18.2.1 | 220 |
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| 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 |
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| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/2 | square hd bolt hdg b18.2.1 | 575 |
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| THRDFAST | MS | Square Head Bolt | Steel | Plain | #7/16-14 x 1 1/2 | square hd bolt b18.2.1 | 90 |
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| WSB | KY | Square Head Bolt | Grade 2 | Plain | 5/8-11 x 1 1/2 | blt fullthread sqr gr2 (pl) 5/8-11x1 1/2 b18.2.1 | 1,283 |
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| FACCA | Ont | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 1 1/2 | square hd machine bolt w/square nut 1/2-13 unc x 1-1/2 lg grade a steel as per astm a307 galvanized as per csa g164 b18.2.1 | 600 |
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| Valley Nu | WA | Square Head Bolt | Steel | Plain | 5/8-11 x 1 1/2 | nc square bolt pl | 10 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/2 | square m/b | 51,000 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 5/8-11 x 1 1/2 | square m/b | 2,400 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 3/4-10 x 1 1/2 | square m/b | 175 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/2 | square m/b | 49000 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 7/8-9 x 1 1/2 | square m/b | 100 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 1/2 | square m/b | 40,000 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | square fulthr m/b | 1,000 |
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| 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 | 1/2-13 x 1 1/2 | Square head set screw cup point STAINLESS STEEL | 225 |
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