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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 .
103 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 | |
| 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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| 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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| 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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| 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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| METRO IND | OH | Square Head Bolt | Grade 5 | Plain | 5/8-11 x 1 1/2 | square hd bolt | 25 |
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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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| 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 | 90 |
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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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| R&S Indus | OR | Square Head Bolt | Grade A | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 (ft) a307 grade a square head bolt plain 747172/400 | 640 |
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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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| CNB | IL | Square Head Bolt | Grade 2 | Plain | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 square head machine bolt grade 2 plain | 400 |
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| CNB | IL | Square Head Bolt | Grade 2 | Zinc/Clear | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 square head machine bolt grade 2 zinc plated | 200 |
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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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| FasSpcMfg | FL | Square Head Bolt | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 1/2 | 5/16-18 x 1-1/2 square head machine bolt 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 | 3/8-16 x 1-1/2 square head machine bolt 18-8 stainless | 5 |
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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 | 3/8-16 x 1-1/2 square head machine bolt 18-8 stainless | 5 |
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| FasSpcMfg | FL | Square Head Bolt | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 1/2 | 5/16-18 x 1-1/2 square head machine bolt 316 stainless | 1 |
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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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| Howe Fast | OH | Square Head Bolt | Steel | Zinc/Clear | 3/8-16 x 1 1/2 | square head set screw half dog point zinc | 200 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 1 1/2 | 5/8-11 x 1 1/2 | square head bolt grade 8 | 39 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 | square head bolt grade 2 | 179 |
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| Alma Bolt | MI | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 | hdg sq mach bolt | 820 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 3/8-16 x 1 1/2 | square bolt | 80 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 5/8-11 x 1 1/2 | square bolt | 12 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 5/16-18 x 1 1/2 | square bolt | 481 |
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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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| American | WI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-20 x 1 1/2 | 1/2-20x1-1/2 nf square hd m/b #304 ss | 9 |
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| American | WI | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 1/2 | 1/2-13x1-1/2 nc square hd mach bolt zinc | 530 |
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| Longhorn | TX | Square Head Bolt | Grade 2 | Plain | 5/16-18 x 1 1/2 | 5/16-18 x 1-1/2 sq hd bolt gr 2 pln | 94 |
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| BHAM | AL | Square Head Bolt | Steel | Galvanized | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 sq hd mach bolt hdg | | 6400 |
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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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| 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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| Mansco | MI | Square Head Bolt | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 square hd machine bolt triv znc | 200 |
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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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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