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3 1/2 inch length Hex Bolts (ASME B18. 2.1)
Hex Machine Bolts are threaded bolts with a hexagonal head on one end, with no washer face on the bearing surface and a threaded shaft on the other end. Hex bolts are tightened with a wrench and are used to connect metal parts. The body tolerances of hex machine bolts are not as close as those of hex cap screws. Hex machine bolts are covered under ASME Standard B18.2.1
111 results, (click on any line for more information)
| Buy Hex Bolts from one of our FCH Network Members | ||||||||
|---|---|---|---|---|---|---|---|---|
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| BHAM | AL | Hex Machine Bolt | Grade A | Zinc/Clear | 5/8-11 x 3 1/2 | 5/8-11x3 1/2 hex bolt a307 zinc b18.2.1 | 87 |
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| BHAM | AL | Hex Machine Bolt | Steel | Galvanized | 3/4-10 x 3 1/2 | 3/4-10x3-1/2 hex tower bolt a394 hdg b18.2.1 | 20 |
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| BHAM | AL | Hex Machine Bolt | Steel | Plain | 5/8-11 x 3 1/2 | 5/8-11x3 1/2 a490 hvy hex bolt b18.2.1 | 27 |
|
| BHAM | AL | Hex Machine Bolt | Steel | Plain | 1 1/4-7 x 3 1/2 | 1 1/4-7x3 1/2 a325 hvy bolt dom. b18.2.1 | 56 |
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| Ababa | CA | Hex Machine Bolt | Steel | Galvanized | 1-8 x 3 1/2 | 1-8 x 3 1/2 hex bolt stl hdg b18.2.1 | 16 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 1-8 x 3 1/2 | 1-8 x 3 1/2 hex bolt stl znc b18.2.1 | 15 |
|
| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 hex bolt stl znc b18.2.1 | 821 |
|
| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18 x 3 1/2 hex bolt stl znc b18.2.1 | 196 |
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| Ababa | CA | Hex Machine Bolt | Steel | Galvanized | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 hex bolt stl hdg b18.2.1 | 200 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 hex bolt stl znc b18.2.1 | 119 |
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| Ababa | CA | Hex Machine Bolt | Steel | Galvanized | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 hex bolt stl hdg b18.2.1 | 160 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 hex bolt stl znc b18.2.1 | 199 |
|
| Ababa | CA | Hex Machine Bolt | Steel | Galvanized | 5/8-11 x 3 1/2 | 5/8-11 x 3 1/2 hex bolt stl hdg b18.2.1 | 64 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 5/8-11 x 3 1/2 | 5/8-11 x 3 1/2 hex bolt stl znc b18.2.1 | 151 |
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| Ababa | CA | Hex Machine Bolt | Steel | Galvanized | 3/4-10 x 3 1/2 | 3/4-10 x 3 1/2 hex bolt stl hdg b18.2.1 | 64 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 3/4-10 x 3 1/2 | 3/4-10 x 3 1/2 hex bolt stl znc b18.2.1 | 320 |
|
| Ababa | CA | Hex Machine Bolt | Steel | Plain | 7/8-9 x 3 1/2 | 7/8-9 x 3 1/2 hex bolt stl pln b18.2.1 | 6 |
|
| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 7/8-9 x 3 1/2 | 7/8-9 x 3 1/2 hex bolt stl znc b18.2.1 | 145 |
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| GLF | OH | Hex Machine Bolt | Grade A | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16x3-1/2 hex hd bolt a307 stl zc b18.2.1 () () () | 221 |
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| GLF | OH | Hex Machine Bolt | Grade A | Galvanized | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 hex hd bolt a307 stl hdg b18.2.1 () () () | 200 |
|
| GLF | OH | Hex Machine Bolt | Grade A | Zinc/Clear | 5/8-11 x 3 1/2 | 5/8-11x3-1/2 hex hd bolt a307 stl zc b18.2.1 () () () | 106 |
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| GLF | OH | Hex Machine Bolt | Grade A | Plain | 3/4-10 x 3 1/2 | 3/4-10x3-1/2 hex hd bolt a307 stl pln b18.2.1 () () () | 10 |
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| GLF | OH | Hex Machine Bolt | Grade A | Galvanized | 1/2-13 x 3 1/2 | 1/2-13x3-1/2 hex hd bolt a307 stl hdg b18.2.1 () () () | 250 |
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| GLF | OH | Hex Machine Bolt | Steel | Galvanized | 3/8-16 x 3 1/2 | 3/8-16x3-1/2 hex mach bolt stl hdg b18.2.1 () () () | 453 |
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| GLF | OH | Hex Machine Bolt | Grade B7 | Plain | 1/2-13 x 3 1/2 | 1/2-13x3-1/2 fin hex hd bolt b-7 stl pln b18.2.1 () () () | 175 |
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| GLF | OH | Hex Machine Bolt | Grade A | Plain | 5/8-11 x 3 1/2 | 5/8-11x3-1/2 hex hd bolt a307 stl pln b18.2.1 () () () | 17 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 1 1/8-7 x 3 1/2 | 1 1/8-7 x 3 1/2 hex bolt stl znc b18.2.1 | 30 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 hex bolt stl znc b18.2.1 | 200 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18 x 3 1/2 hex bolt stl znc b18.2.1 | 200 |
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| Ababa | CA | Hex Machine Bolt | Steel | Galvanized | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 hex bolt stl hdg b18.2.1 | 50 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 hex bolt stl znc b18.2.1 | 300 |
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| Ababa | CA | Hex Machine Bolt | Steel | Galvanized | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 hex bolt stl hdg b18.2.1 | 50 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 hex bolt stl znc b18.2.1 | 50 |
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| Ababa | CA | Hex Machine Bolt | Steel | Zinc/Clear | 5/8-11 x 3 1/2 | 5/8-11 x 3 1/2 hex bolt stl znc b18.2.1 | 50 |
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| Alma Bolt | MI | Hex Machine Bolt | Grade 2 | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 hex hd blt gr2 zp b18.2.1 | 4025 |
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| SII | IN | Hex Machine Bolt | Grade A | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16 x 3-1/2 astm a307 grade a zinc finish hex bolt b18.2.1 | 25 |
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| Wink Fast | VA | Hex Machine Bolt | 316, 317, A4 Stainless | Plain | 5/8-11 x 3 1/2 | 316l ss (s31603) hex bolt 5/8-11x3-1/2 per asme b18.2.1 | 40 |
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| JET FITTING | CA | Hex Machine Bolt | Grade A | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18x3 1/2 hex bolt a307 gr a zn 494036 b18.2.1 | 315 |
|
| JET FITTING | CA | Hex Machine Bolt | Grade A | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20x3 1/2 hex bolt a307 gr a zn 494015 b18.2.1 | 4094 |
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| JET FITTING | CA | Hex Machine Bolt | Grade A | Galvanized | 1/2-13 x 3 1/2 | 1/2-13x3 1/2 hex bolt a307 gr a hdg 495061 b18.2.1 | 250 |
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| JET FITTING | CA | Hex Machine Bolt | Grade A | Galvanized | 5/16-18 x 3 1/2 | 5/16-18x3 1/2 hex bolt a307 gr a hdg 495023 b18.2.1 | 150 |
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| Standard | MA | Hex Machine Bolt | Steel | Galvanized | 3/4-10 x 3 1/2 | 3/4-10x3-1/2 machine bolt galvanized b18.2.1 | 43 |
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| QFC | TX | Hex Machine Bolt | ASTM A449 | Galvanized | 1/2-13 x 3 1/2 | 1/2-13x3 hex head bolt a449 hdg 1 1/2 thd b18.2.1 | 23 |
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| B & K FAST | PA | Hex Machine Bolt | Grade B7 | Zinc/Clear | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 a193 b7 hex bolts zinc b18.2.1 | 8 |
|
| BHAM | GA | Hex Machine Bolt | Duplex Stainless (2205, Ferralium etc.) | Plain | 3/4-10 x 3 1/2 | 3/4-10x3 1/2 z100 super duplex stainless hex bolt std thread b18.2.1 | 4 |
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| BHAM | GA | Hex Machine Bolt | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/8-11 x 3 1/2 | 5/8-11x3 1/2 hastelloy c276 hex bolt-ft b18.2.1 | 66 |
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| BHAM | GA | Hex Machine Bolt | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/8-11 x 3 1/2 | 5/8-11x3 1/2 hastelloy c276 hex bolt-ft b18.2.1 | 27 |
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| BHAM | GA | Hex Machine Bolt | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/8-11 x 3 1/2 | 5/8-11x3 1/2 hastelloy c276 hex bolt-ft b18.2.1 | 16 |
|
| BHAM | GA | Hex Machine Bolt | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/8-11 x 3 1/2 | 5/8-11x3-1/2 hastelloy c276 hex bolt-ft b18.2.1 | 2 |
|
| BHAM | GA | Hex Machine Bolt | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/8-11 x 3 1/2 | 5/8-11x3-1/2 hastelloy c276 hex bolt-ft b18.2.1 | 7 |
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| OSSCO | RI | Hex Machine Bolt | Grade B | Plain | 3/4-10 x 3 1/2 | 3/4-10x3 1/2 a307 gr b bolt b18.2.1 | 94 |
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| OSSCO | RI | Hex Machine Bolt | Grade B | Zinc/Clear | 3/4-10 x 3 1/2 | 3/4-10x3 1/2 a307 gr b bolt plated b18.2.1 | 256 |
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| QFC | TX | Hex Machine Bolt | Steel | Plain | 1 1/8 x 3 1/2 | 1 1/8x3 1/2nc plain #2 hex blt b18.2.1 | 1305 |
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| QFC | TX | Hex Machine Bolt | Grade 5 | Galvanized | 3/4-10 x 3 1/2 | 3/4-10 x 3 1/2 hex head bolt gr. 5 hdg b18.2.1 | 10 |
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| QFC | TX | Hex Machine Bolt | ASTM A449 | Galvanized | 7/8-9 x 3 1/2 | 7/8-9 x 3 1/2 hex head bolt a449 hdg b18.2.1 | 4 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 2 | Zinc/Clear | x 3 1/2 | bolt hex 1-1/8 12x3-1/2 grade 2 steel zinc plated b18.2.1 | 28 |
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| JET FITTING | CA | Hex Machine Bolt | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | bolt hex 5/16-18x3-1/2 steel zinc plated b18.2.1 | 85 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 5 | Zinc/Clear | 5/16-18 x 3 1/2 | bolt hex 5/1618x3-1/2 grade 5 steel zinc plated b18.2.1 | 350 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 8 | Zinc/Yellow | 5/16-18 x 3 1/2 | bolt hex 5/1618x3-1/2 grade 8 steel zinc plated yellow b18.2.1 | 230 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 2 | Zinc/Clear | 1/2-13 x 3 1/2 | 1/2-13x3-1/2 hex bolt steel grade-2 zinc b18.2.1 | 50 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 8 | Zinc/Yellow | 1/2-13 x 3 1/2 | bolt hex 1/213x3-1/2 grade 8 steel zinc plated yellow b18.2.1 | 50 |
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| JET FITTING | CA | Hex Machine Bolt | Grade A | Zinc/Clear | 1/4-20 x 3 1/2 | bolt hex 1/4-20x3-1/2 steel a307 zinc plated b18.2.1 | 25 |
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| JET FITTING | CA | Hex Machine Bolt | Grade A | Zinc/Clear | 1/2-13 x 3 1/2 | 1/2-13x3 1/2 (pt) bolts hex bolts a307 grade a hex bolt zinc cr+3 (inch) b18.2.1 | 25 |
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| JET FITTING | CA | Hex Machine Bolt | Grade A | Galvanized | 1/4-20 x 3 1/2 | 1/4-20x3 1/2 (pt) bolts hex bolts a307 grade a hex bolt hdg (inch) b18.2.1 | 50 |
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| NBS | IL | Hex Machine Bolt | Grade A | Zinc/Clear | 1/4-20 x 3 1/2 | 1/4-20 x 3-1/2 307a hex machine bolt zinc b18.2.1 | 12.6 |
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| NBS | IL | Hex Machine Bolt | Grade A | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16 x 3-1/2 307a hex machine bolt zinc b18.2.1 | 2.25 |
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| NBS | IL | Hex Machine Bolt | Grade A | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18 x 3-1/2 307a hex machine bolt zinc b18.2.1 | 7.2 |
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| NBS | IL | Hex Machine Bolt | Grade A | Zinc/Clear | 7/16-14 x 3 1/2 | 7/16-14 x 3-1/2 307a hex machine bolt zinc b18.2.1 | 2.25 |
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| NBS | IL | Hex Machine Bolt | Grade A | Zinc/Clear | 1/2-13 x 3 1/2 | 1/2-13 x 3-1/2 307a hex machine bolt zinc b18.2.1 | 2.25 |
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| NBS | IL | Hex Machine Bolt | Grade A | Zinc/Clear | 5/8-11 x 3 1/2 | 5/8-11 x 3-1/2 307a hex machine bolt zinc b18.2.1 | 0.8 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 2 | Zinc/Clear | 5/8-11 x 3 1/2 | bolt hex 5/8-11x3-1/2 grade 2 steel zinc plated b18.2.1 | 61 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 5 | Zinc/Yellow | 5/8-11 x 3 1/2 | bolt hex 5/8-11x3-1/2 grade 5 steel zinc plated yellow b18.2.1 | 50 |
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| JET FITTING | CA | Hex Machine Bolt | Grade 2 | Zinc/Clear | 3/8-16 x 3 1/2 | bolt hex 3/816x3-1/2 grade 2 steel zinc plated b18.2.1 | 66 |
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| THRDFAST | FL | Hex Machine Bolt | Grade A | Galvanized | 1/4-20 x 3 1/2 | a307a h/b hdg b18.2.1 | 454 |
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| THRDFAST | FL | Hex Machine Bolt | Grade A | Galvanized | 7/8-9 x 3 1/2 | a307a h/b hdg b18.2.1 | 100 |
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| THRDFAST | FL | Hex Machine Bolt | Grade A | Galvanized | 1-8 x 3 1/2 | a307a h/b hdg b18.2.1 | 28 |
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| THRDFAST | FL | Hex Machine Bolt | Grade A | Galvanized | 3/8-16 x 3 1/2 | a307a h/b hdg b18.2.1 | 19 |
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| THRDFAST | OK | Hex Machine Bolt | Grade A | Galvanized | 5/8-11 x 3 1/2 | a307a h/b hdg b18.2.1 | 9 |
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| THRDFAST | TN | Hex Machine Bolt | Grade A | Galvanized | 1-8 x 3 1/2 | a307a h/b hdg b18.2.1 | 12 |
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| THRDFAST | AL | Hex Machine Bolt | Grade A | Galvanized | 1/4-20 x 3 1/2 | a307a h/b hdg b18.2.1 | 754 |
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| THRDFAST | MS | Hex Machine Bolt | Grade A | Galvanized | 1 1/8-7 x 3 1/2 | a307a h/b hdg b18.2.1 | 3 |
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| THRDFAST | MS | Hex Machine Bolt | Grade A | Galvanized | 5/16-18 x 3 1/2 | a307a h/b hdg b18.2.1 | 450 |
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| THRDFAST | AL | Hex Machine Bolt | Grade A | Galvanized | 1/2-13 x 3 1/2 | a307a h/b hdg b18.2.1 | 18335 |
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| THRDFAST | AL | Hex Machine Bolt | Grade A | Galvanized | 5/8-11 x 3 1/2 | a307a h/b hdg b18.2.1 | 961 |
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| THRDFAST | AL | Hex Machine Bolt | Grade A | Galvanized | 3/4-10 x 3 1/2 | a307a h/b hdg b18.2.1 | 1400 |
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| THRDFAST | OK | Hex Machine Bolt | Grade A | Galvanized | 7/8-9 x 3 1/2 | a307a h/b hdg b18.2.1 | 11 |
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| THRDFAST | AL | Hex Machine Bolt | Grade A | Galvanized | 1 1/4-7 x 3 1/2 | a307a h/b hdg b18.2.1 | 12 |
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| THRDFAST | AL | Hex Machine Bolt | Grade A | Galvanized | 5/16-18 x 3 1/2 | a307a h/b hdg b18.2.1 | 104 |
|
| THRDFAST | MS | Hex Machine Bolt | Grade A | Galvanized | 7/8-9 x 3 1/2 | a307a h/b hdg b18.2.1 | 5 |
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| THRDFAST | OK | Hex Machine Bolt | Grade A | Galvanized | 1-8 x 3 1/2 | a307a h/b hdg domestic b18.2.1 | 3 |
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| All Size | TX | Hex Machine Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 7/8-9 x 3 1/2 | 7/8-9 x 3 1/2 hex bolt s/s b18.2.1 | 35 |
|
| All Size | TX | Hex Machine Bolt | Grade A | Galvanized | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 a307 hex bolt galv b18.2.1 | 416 |
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| All Size | TX | Hex Machine Bolt | Grade 5 | Plain | 7/16-20 x 3 1/2 | 7/16-20 x 3 1/2 gr. 5 hex bolt b18.2.1 | 25 |
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| All Size | TX | Hex Machine Bolt | Grade A | Galvanized | 3/4 x 3 1/2 | 3/4 x 3-1/2 hex bolt a307 galv b18.2.1 | 6 |
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| All Size | TX | Hex Machine Bolt | Grade 8 | Plain | 9/16-18 x 3 1/2 | 9/16-18 x 3 1/2 gr. 8 hex bolt b18.2.1 | 77 |
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| All Size | TX | Hex Machine Bolt | Grade 8 | Plain | 3/8-24 x 3 1/2 | 3/8-24 x 3 1/2 gr. 8 hex bolt b18.2.1 | 180 |
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| All Size | TX | Hex Machine Bolt | Grade 8 | Plain | 5/16-18 x 3 1/2 | 5/16-18 x 3 1/2 gr. 8 hex bolt domestic b18.2.1 | 91 |
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| All Size | TX | Hex Machine Bolt | Grade 8 | Plain | 1/4-20 x 3 1/2 | 1/4-20 x 3 1/2 gr. 8 hex bolt domestic b18.2.1 | 590 |
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| All Size | TX | Hex Machine Bolt | Grade 8 | Plain | 1 1/8-7 x 3 1/2 | 1 1/8-7 x 3 1/2 gr. 8 hex bolt b18.2.1 | 17 |
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| All Size | TX | Hex Machine Bolt | Grade 5 | Plain | 1-14 x 3 1/2 | 1-14 x 3 1/2 gr. 5 hex bolt b18.2.1 | 10 |
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| All Size | TX | Hex Machine Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 x 3 1/2 | 1-8 x 3 1/2 hex bolt s/s b18.2.1 | 51 |
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| All Size | TX | Hex Machine Bolt | Grade 5 | Plain | 7/8-14 x 3 1/2 | 7/8-14 x 3 1/2 gr. 5 hex bolt b18.2.1 | 40 |
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| All Size | TX | Hex Machine Bolt | Grade 8 | Plain | 5/16-24 x 3 1/2 | 5/16-24 x 3 1/2 gr. 8 hex bolt b18.2.1 | 344 |
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| All Size | TX | Hex Machine Bolt | Grade 5 | Plain | 1 1/2-6 x 3 1/2 | 1 1/2-6 x 3 1/2 gr. 5 hex bolt b18.2.1 | 24 |
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| All Size | TX | Hex Machine Bolt | Grade 8 | Plain | 3/4-16 x 3 1/2 | 3/4-16 x 3 1/2 gr. 8 hex bolt plain b18.2.1 | 14 |
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| Optimas | IL | Hex Machine Bolt | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 asme b18.2.1 hex bolt | 999 |
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| Optimas | IL | Hex Machine Bolt | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10 x 3-1/2 asme b18.2.1 hex bolt | 1,493 |
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| Optimas | IL | Hex Machine Bolt | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10 x 3-1/2 asme b18.2.1 hex bolt | 1,493 |
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| Optimas | IL | Hex Machine Bolt | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 asme b18.2.1 hex bolt | 999 |
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| Optimas | IL | Hex Machine Bolt | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10 x 3-1/2 asme b18.2.1 hex machine bolt | 1493 |
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| Optimas | IL | Hex Machine Bolt | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 asme b18.2.1 hex machine bolt | 999 |
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