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Square Head Bolts, Galvanized (ASME B18. 2.1)
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 .
182 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 | |
| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 5/16-18 x 3 | a307 gra square hd m/b low carb hdg b18.2.1 | 150 |
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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 | Galvanized | 5/8-11 x 3 | a307 gra square hd m/b low carb hdg b18.2.1 | 18 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/4-20 x 1 1/4 | a307 gra square hd m/b low carb hdg b18.2.1 | 1,325 |
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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 | Galvanized | 5/16-18 x 3/4 | a307 gra square hd m/b low carb hdg b18.2.1 | 1,400 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/4-20 x 2 1/2 | a307 gra square hd m/b low carb hdg b18.2.1 | 1,200 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/4-20 x 3 | a307 gra square hd m/b low carb hdg b18.2.1 | 128 |
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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 | Galvanized | 1/4-20 x 3 1/2 | a307 gra square hd m/b low carb hdg b18.2.1 | 350 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/4-20 x 4 | a307 gra square hd m/b low carb hdg b18.2.1 | 500 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 5/16-18 x 2 1/2 | a307 gra square hd m/b low carb hdg b18.2.1 | 350 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 2 1/2 | a307 gra square hd m/b low carb hdg b18.2.1 | 100 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 3 1/2 | a307 gra square hd m/b low carb hdg b18.2.1 | 250 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 1 3/4 | a307 gra square hd m/b low carb hdg b18.2.1 | 340 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 1 1/4 | 1/2-13x1 1/4 a307 gra square hd machine bolt low carb hdg b18.2.1 | 450 |
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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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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 14 | 3/4-10x14 sq. hd bolt hdg a307 6 thd b18.2.1 | 30 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 15 | 3/4-10x15 square head bolt a307 hdg b18.2.1 | 30 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 16 | 3/4-10x16 square head bolt a307 hdg 6 thd b18.2.1 | 237 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 16 | 3/4-10x16 square head bolt a307 hdg 6 thd b18.2.1 | 20 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 17 | 3/4-10x17 square head bolt a307 hdg 6 thd b18.2.1 | 37 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 18 | 3/4-10x18 square head bolt a307 hdg 6 thd b18.2.1 | 56 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 19 | 3/4-10x19 sq. head bolt a307 hdg 6 thd b18.2.1 | 40 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 20 | 3/4-10x20 square head bolt a307 hdg 6 thd b18.2.1 | 6 |
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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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| BHAM | TX | Square Head Bolt | Steel | Galvanized | 3/8-16 x 4 | 3/8-16x4 square head bolt hdg b18.2.1 | 43 |
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| OSSCO | RI | Square Head Bolt | Steel | Galvanized | 1/4-20 x 4 | 1/4-20x4 square hd mach bolt h.d.g. b18.2.1 | 8 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 22 | 5/8-11 x 22 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 21 | 5/8-11 x 21 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 24 | 5/8-11 x 24 square head bolt a307 hdg 6 thd b18.2.1 | 4 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 23 | 5/8-11 x 23 square head bolt a307 hdg 6 thd b18.2.1 | 6 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 25 | 5/8-11 x 25 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 27 | 5/8-11 x 27 square head bolt a307 hdg 6 thd b18.2.1 | 1 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 26 | 5/8-11 x 26 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 32 | 5/8-11 x 32 square head bolt a307 hdg 6 thd b18.2.1 | 4 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 30 | 5/8-11 x 30 square head bolt a307 hdg 6 thd b18.2.1 | 1 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 35 | 5/8-11 x 35 square head bolt a307 hdg 6 thd b18.2.1 | 4 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 41 | 5/8-11 x 41 square head bolt a307 hdg 6 thd b18.2.1 | 5 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 39 | 5/8-11 x 39 square head bolt a307 hdg 6 thd b18.2.1 | 6 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 5/8-11 x 36 | 5/8-11 x 36 square head bolt a307 hdg 6 thd b18.2.1 | 1 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 11 | 3/4-10 x 11 square head bolt a307 hdg b18.2.1 | 3 |
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| QFC | TX | Square Head Bolt | Grade A | Galvanized | 3/4-10 x 44 | 3/4-10 x 44 square head bolt a307 hdg b18.2.1 | 10 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 5/8-11 x 1 | square hd bolt hdg b18.2.1 | 291 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/4 | square hd bolt hdg b18.2.1 | 112 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 3/8-16 x 11 | square hd bolt hdg b18.2.1 | 108 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 5/8-11 x 2 1/2 | square hd bolt hdg b18.2.1 | 100 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 5/8-11 x 16 1/2 | square hd bolt hdg b18.2.1 | 47 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 3/4-10 x 3 | square hd bolt hdg b18.2.1 | 20 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 7/8-9 x 42 | square hd bolt rt6 hdg b18.2.1 | stock |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 3/4-10 x 16 | square hd bolt hdg b18.2.1 | 24 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 7/8-9 x 18 | square hd bolt rt6 hdg b18.2.1 | 10 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 7/8-9 x 22 | square hd bolt hdg b18.2.1 | 5 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 7/8-9 x 42 | square hd bolt rt6 hdg b18.2.1 | 3 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 7/8-9 x 46 | square hd bolt rt6 hdg b18.2.1 | 3 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 7/8-9 x 44 | square hd bolt rt6 hdg b18.2.1 | 2 |
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| THRDFAST | FL | Square Head Bolt | Steel | Galvanized | 3/4-10 x 12 | square hd bolt hdg b18.2.1 | 1 |
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| THRDFAST | OK | Square Head Bolt | Steel | Galvanized | 7/8-9 x 4 | square hd bolt hdg b18.2.1 | 215 |
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| THRDFAST | OK | Square Head Bolt | Steel | Galvanized | 5/8-11 x 4 | square hd bolt hdg b18.2.1 | 117 |
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| THRDFAST | OK | Square Head Bolt | Steel | Galvanized | 1/2-13 x 6 | square hd bolt hdg b18.2.1 | 88 |
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| THRDFAST | OK | Square Head Bolt | Steel | Galvanized | 3/4-10 x 3 | square hd bolt hdg b18.2.1 | 60 |
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| THRDFAST | OK | Square Head Bolt | Steel | Galvanized | 7/8-9 x 3 | square hd bolt hdg b18.2.1 | 40 |
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| THRDFAST | OK | Square Head Bolt | Steel | Galvanized | 7/8-9 x 3 | square hd bolt rt2.25 hdg b18.2.1 | 20 |
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| KBS | TN | Square Head Bolt | Steel | Galvanized | 5/8-11 x 2 | 5/8-11 x 2 square hd mach.bolt hdg! b18.2.1 | 260 |
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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 | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 2 | square hd bolt hdg b18.2.1 | 134 |
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| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 5/8-11 x 16 | double arming bolt hdg w/4-sq nuts assm b18.2.1 | 152 |
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| THRDFAST | MS | Square Head Bolt | Steel | Galvanized | 3/4-10 x 3 | square hd bolt hdg b18.2.1 | 8 |
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| THRDFAST | MS | Square Head Bolt | Steel | Galvanized | 7/8-9 x 9 | square hd bolt hdg b18.2.1 | 50 |
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| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 5/8-11 x 14 | double arming bolt hdg w/4-sq nuts assm b18.2.1 | 23 |
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| THRDFAST | AL | Square Head Bolt | Grade 2 | Galvanized | 7/8-9 x 20 | tfi square hd bolt rt 7in hdg b18.2.1 | 20 |
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| THRDFAST | MS | Square Head Bolt | Steel | Galvanized | 5/8-11 x 2 | square hd bolt hdg b18.2.1 | 250 |
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| THRDFAST | OK | Square Head Bolt | Steel | Galvanized | 3/4-10 x 14 | square hd bolt hdg w/sq nut assembled b18.2.1 | 40 |
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| THRDFAST | TN | Square Head Bolt | Steel | Galvanized | 3/4-10 x 14 | square hd bolt hdg w/sq nut assembled b18.2.1 | 15 |
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| THRDFAST | AL | Square Head Bolt | Grade 2 | Galvanized | 7/8-9 x 17 | tfi square hd bolt rt 7in hdg b18.2.1 | 58 |
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| THRDFAST | MS | Square Head Bolt | Steel | Galvanized | 1/2-13 x 6 | square hd bolt hdg b18.2.1 | 18 |
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| THRDFAST | AL | Square Head Bolt | Grade 2 | Galvanized | 7/8-9 x 19 | tfi square hd bolt rt 8in hdg b18.2.1 | 28 |
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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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| FACCA | Ont | Square Head Bolt | Grade A | Galvanized | 3/4-10 | square hd machine bolt w/square nut 3/4-10 unc 2a x 2 3/4 long grade a steel as per astm a307 galvanized as per csa g164 b18.2.1 | 300 |
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