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Square Head Bolts, Grade 8
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 .
188 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 | |
| GLF | OH | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 3 | 3/4-10x3 square hd bolt grade 8 stl pln b18.2.1 () () () | 5,000 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 2 1/2 | square bolt gr. 8 | 1 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 3 1/2 | square bolt gr. 8 | 2 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 1 1/4 x 6 | square bolt gr. 8 | 20 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 1 1/4 x 12 square head bolt gr. 8 plain | 4 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 3 | 5/8-11 x 3 square head bolt gr. 8 plain | 19 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 8 | square bolt gr. 8 | 1 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 3 | square m/b finish j429 | 3 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 1 3/8-6 x 6 1/2 | nc square bolt gr. 8 | 6 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 1 1/4 x 5 | square bolt gr. 8 | 20 |
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| Hayes | CA | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 2 | 5/8-11 x 2 square hd bolt gr 8 pln | 4 |
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| Set Screw | IL | Square Head Bolt | Grade 8 | Plain | 1 1/8-7 x 15.0 | 1 1/8-7x15.0 grade 8 square bolt | inquire |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 1-14 x 14 | 1-14 x 14 sae (6 usable thread) | square head bolt grade 8 | 6 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 1/4-7 x 20 | 1 1/4-7 x 20 | square head bolt grade 8 | 1 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 2 1/4 | 5/8-11 x 2 1/4 | square head bolt grade 8 | 50 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 2 1/2 | 3/4-10 x 2 1/2 | square head bolt grade 8 | 20 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 7/8-14 x 6 | 7/8-14 x 6 sae | square head bolt grade 8 | 2 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 3 | 7/8-9 x 3 | square head bolt grade 8 | 31 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 | square head bolt grade 8 | 171 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 9 1/2 | 7/8-9 x 9 1/2 | square head bolt grade 8 | 3 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 2 1/4 | 5/8-11 x 2 1/4 | square head bolt grade 8 | 9 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 1/8-7 x 4 1/2 | 1 1/8-7 x 4 1/2 | square head bolt grade 8 | 5 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 12 | 3/4-10 x 12 heavy square hd. | square head bolt grade 8 | 73 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 | square head bolt grade 8 | 16 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 1/2 x 24 | 1 1/2 x 24 blank | square head bolt grade 8 | 9 |
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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 8 | Plain | 5/8-11 x 3 | 5/8-11 x 3 | square head bolt grade 8 | 16 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 10 | 3/4-10 x 10 | square head bolt grade 8 | 1 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 1 x 16 | 1 x 16 blank | square head bolt grade 8 | 29 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 12 | 7/8-9 x 12 (4 thread) | square head bolt grade 8 | 20 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 4 1/2 | 7/8-9 x 4 1/2 | square head bolt grade 8 | 12 |
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| Alma Bolt | MI | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 | square head bolt grade 8 | 183 |
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| Liberty | IL | Square Head Bolt | Grade 8 | Zinc/Yellow | 3/4-10 x 5 1/4 | square m/b .0002 .0002 | 16 |
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| Coburn Myers Fastening Systems | PA | Square Head Bolt | Grade 8 | Plain | square head bolt grade 8 plain | 20 |
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| Coburn Myers Fastening Systems | PA | Square Head Bolt | Grade 8 | Plain | square head bolt grade 8 plain | 228 |
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| Coburn Myers Fastening Systems | PA | Square Head Bolt | Grade 8 | Plain | square head bolt grade 8 plain | 10 |
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| Jackson | MS | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 4 1/2 | 5/8-11x4-1/2 square bolt gr. 8 | 1 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Zinc/Yellow | 3/4-10 x 5 | bolt & c/s square boltfulthr b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 16 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/8-16 x 10 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 12 | bolt & c/s square boltsquare b18.2.1 | 1000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 8 | bolt & c/s square boltsquare b18.2.1 | 800 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 7/16-14 x 5 | bolt & c/s square boltsquare b18.2.1 | 2500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 7/16-14 x 3 1/2 | bolt & c/s square boltsquare b18.2.1 | 1000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1 3/4-5 x 10 | bolt & c/s square boltsquare b18.2.1 | 280 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 26 | bolt & c/s square boltsquare b18.2.1 | 260 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/4-16 x 6 1/2 | bolt & c/s square boltb18.2.1 | 1187 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 14 | bolt & c/s square boltsquare b18.2.1 | 1000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 4 | bolt & c/s square boltsquare b18.2.1 | 600 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1 1/4-12 x 10 | bolt & c/s square boltb18.2.1 | 100 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 2 3/4 | bolt & c/s square boltsquare b18.2.1 | 800 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Zinc/Yellow | 3/4-16 x 4 | bolt & c/s square boltfulthr b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 6 | bolt & c/s square boltsquare b18.2.1 | 200 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 7/16-14 x 4 | bolt & c/s square boltsquare b18.2.1 | 1000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 8 | bolt & c/s square boltsquare b18.2.1 | 400 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 7/16-20 x 3 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1-8 x 16 | bolt & c/s square boltsquare b18.2.1 | 150 |
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| Mansco | MI | Square Head Bolt | Grade 8 | Plain | 3/8-16 x 1 | 3/8-16x1 square hd machine bolt gr8 pln 100/box | 350 |
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| Mansco | MI | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 4 | square hd m/b gr8 25/box | 26 |
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| Ababa | CA | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 2 1/2 | 3/4-10 x 2-1/2 square head bolt gr.8 plain b18.2.1 | 20 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 15 | square hd bolt | 9 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 8 | in square hd bolt | 10 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 16 | square hd bolt | 5 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 20 | square hd bolt | 19 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 8 | 1/2-13 x 8in square hd bolt gr 8 pln | 42 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 7 1/2 | 7/8-9 x 7 1/2 square hd bolt gr 8 pln | 8 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 6 | 1 1/4-7 x 6in square hd bolt gr 8 pln | 3 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 6 | 5/8-11 x 6in square hd bolt gr 8 pln | 3 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 13 | 3/4-10 x 13 square hd bolt gr 8 pln | 2 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 4 1/2 | 1/2-13 x 4 1/2 square hd bolt gr 8 pln | 1 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1 1/2-6 x 8 1/2 | square hd bolt | 9 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 7 1/2 | square hd bolt | 8 |
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| MidStates | MI | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 11 | square hd bolt | 1 |
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| WDMB | IA | Square Head Bolt | Grade 8 | Plain | 3/4-16 x 4 x 11 1/2 | bolt u sqr gr8.1 po 3/4-16x4x11 1/2 spc (W0B0) (W0B0) (W0B0) | 141 |
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| HBBOLT | CA | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 14 | square hd bolt w/6 thrd | 7 |
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| ISSCO | MO | Square Head Bolt | Grade 8 | Plain | 1-14 x 4 1/2 | 52 |
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| ISSCO | MO | Square Head Bolt | Grade 8 | Plain | 1-14 x 6 | 21 |
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| MastBolt | OH | Square Head Bolt | Grade 8 | Plain | 1 x 4 | 1 x 4 square head switch bolt gr.8 with 2-1/4 thread | 45 pcs |
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| MastBolt | OH | Square Head Bolt | Grade 8 | Plain | 1 x 4 | 1 x 4 square head switch bolt gr.8 with 2-1/4 thread | 45 |
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| B & K FAST | PA | Square Head Bolt | Grade 8 | Zinc/Yellow | 7/16-20 x 5 | 7/16-20 x 5 square bolts gr 8 z yellow b18.2.1 | 24 |
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| B & K FAST | PA | Square Head Bolt | Grade 8 | Plain | 1-8 x 3 1/2 | 1-8 x 3 1/2 square bolts gr 8 plain b18.2.1 | 2 |
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| B & K FAST | PA | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 9 | 1 1/4-7 x 9 square bolts gr 8 plain b18.2.1 | 2 |
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| B & K FAST | PA | Square Head Bolt | Grade 8 | Plain | 1 1/2-12 x 8 | 1 1/2-12 x 8 square bolts gr 8 plain b18.2.1 | 1 |
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| B & K FAST | PA | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 5 1/2 | 5/8-11 x 5 1/2 square bolts gr 8 plain b18.2.1 | 7 |
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| General F | MI | Square Head Bolt | Grade 8 | Plain | 5/8-18 x 2 1/4 | 5/8-18x2.25 square hd stop bolt gr8 b18.2.1 | 24,272 |
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| BHAM | AL | Square Head Bolt | Grade 8 | Plain | 1-8 x 4 | square hd m/b | 12 |
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| BHAM | AL | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 6 | square hd mach bolt | 6 |
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| FastWare | Sask | Square Head Bolt | Grade 8 | Zinc/Yellow | 3/4-10 x 4 | nc square m/b 1 3/4 tl | 1,155 |
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| FastWare | Sask | Square Head Bolt | Grade 8 | Zinc/Yellow | 1-8 x 8 | nc square m/b | 39 |
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| SRF | AL | Square Head Bolt | Grade 8 | Plain | 1-8 x 7 | square hd bolt | 4 |
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| SRF | AL | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 4 | square hd bolt | - |
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| SRF | AL | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 7 | square hd bolt | 3 |
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| THRDFAST | AL | Square Head Bolt | Grade 8 | Plain | 3/4 | nf-16x3 1/2 gr8 square hd bolt b18.2.1 | 400 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 18 | 1-8 x 18 square mach bolt gr-8 b18.2.1 | 28 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 5 | 1-8 x 5 square mach bolt gr-8 b18.2.1 | 52 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 15 | 1-8 x 15 square!machbolt gr-8 b18.2.1 | 2 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 3 1/2 | 1-8 x 3 1/2 square mach bolt gr-8 b18.2.1 | 20 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 12 | 1-8 x 12 square mach bolt gr-8 b18.2.1 | 26 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/8-7 x 10 | 1-1/8-7 x 10 inch square mach bolt gr-8 b18.2.1 | 4 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 6 1/2 | 1-8 x 6 1/2 square!machbolt gr-8 b18.2.1 | 55 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 6 3/4 | 1-8 x 6 3/4 square mach bolt gr-8 b18.2.1 | 10 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/8-7 x 5 1/2 | 1-1/8-7 x 5 1/2 square!machbolt gr-8 b18.2.1 | 15 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1-8 x 8 | 1-8 x 8 square!machbolt gr-8 b18.2.1 | 52 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 4 1/2 | 1-1/4-7 x 4 1/2 square!machbolt gr-8 b18.2.1 | 90 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 10 | 1-1/4-7 x 10 inch square!machbolt gr-8 b18.2.1 | 26 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 4 | 1-1/4-7 x 4 square!machbolt gr-8 b18.2.1 | 50 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 16 | 1-1/4-7 x 16 square!machbolt gr-8 b18.2.1 | 23 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 12 | 1-1/4-7 x 12 square!machbolt gr-8 b18.2.1 | 10 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 5 1/2 | 1-1/4-7 x 5 1/2 square!machbolt gr-8 b18.2.1 | 50 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/8-7 x 8 1/2 | 1-1/8-7 x 8 1/2 square mach bolt gr-8 b18.2.1 | 6 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/2-6 x 12 | 1-1/2-6 x 12 square mach bolt gr-8 b18.2.1 | 25 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/2-6 x 6 | 1-1/2-6 x 6 square mach bolt gr-8 b18.2.1 | 31 |
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| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1 1/4-7 x 8 | 1-1/4-7 x 8 square!machbolt gr-8 b18.2.1 | 24 |
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| THRDFAST | FL | Square Head Bolt | Grade 8 | Plain | 5/8-11 x 9 3/4 | gr8 square hd bolt b18.2.1 | 1 |
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| THRDFAST | FL | Square Head Bolt | Grade 8 | Plain | 3/4-10 x 4 | gr8 square hd bolt b18.2.1 | 17 |
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| WSB | KY | Square Head Bolt | Grade 8 | Zinc/Clear | 3/4-10 x 2 1/4 | blt sqr gr8 (zt) 3/4-10x2 1/4 b18.2.1 | 199 |
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| Wurth | IN | Square Head Bolt | Grade 8 | Plain | 7/8-9 x 5 | 7/8-9 x 5 square hd t-bolt gr 8 | 44 |
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| Valley Nu | WA | Square Head Bolt | Grade 8 | Plain | 1-8 x 4 1/2 | nc gr8 square hd bolt | 10 |
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