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1/2-13 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 .
3,231 Square Head Bolt, showing 200, (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 | |
| 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 | Plain | 1/2-13 x 1 1/4 | square bolt gr. 2 | 400 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 4 1/2 | square bolt gr. 2 | 1 |
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| Jackson | MS | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 3 1/2 | square | 2 |
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| Jackson | MS | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 4 | nc square bolt gr. 5 fastenel # 0168684 or equal | 143 |
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| Jackson | MS | Square Head Bolt | Grade 5 | Zinc/Clear | 1/2-13 x 1 | nc square bolt gr.5 | 46 |
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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 8 | 1/2-13x8 square head bolt gr. 2 plain | 100 |
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| TownCountry | AR | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 2 | square m/b | 444 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Zinc/Clear | 1/2-13 x 1 | 1/2 square bolt gr. 2 | 772 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 | nc square bolt gr. 2 | 278 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 3 | nc square bolt gr. 2 | 153 |
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| Jackson | MS | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 7 1/2 | square | 8 |
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| Jackson | MS | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 2 1/4 | nc square bolt gr.5 | 49 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 2 1/2 | square bolt | 100 |
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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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| Jackson | MS | Square Head Bolt | Grade 2 | Galvanized | 1/2-13 x 3 | square bolt hdg | 191 |
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| Jackson | MS | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 2 | nc square bolt gr. 2 | 150 |
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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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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 square hd bolt | 2 |
|
| YANKEE | NH | Square Head Bolt | Grade A | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2-1/2 square head bolt astm a307 | 292 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 square hd bolt | 120 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 5 | 1/2-13 x 5 square hd bolt | 11 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | square bolt finish | 163 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 4 1/2 | square hd bolt | 160 |
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| YANKEE | NH | Square Head Bolt | Steel | Plain | 1/2-13 x 6 | square hd bolt | 260 |
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| Cal Fastenrs | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 4 1/2 | square m/b - square bolt | 40 |
|
| Cal Fastenrs | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | square hd mach bolt square uare head | 100 |
|
| ASMC | IL | Square Head Bolt | Grade A | Plain | 1/2-13 x 1 | (ft) coarse a307 gra square hd m/b low carb b18.2.1 | 260 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 1/2-13 x 3 | (pt) coarse a307 gra square hd m/b low carb b18.2.1 | 25 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 1/2-13 x 5 | (pt) coarse a307 gra square hd m/b low carb b18.2.1 | 10 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 6 | 1/2-13x6 a307 gra square hd machine bolt low carb hdg | 95 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 1/2-13 x 2 | (pt) coarse a307 gra square hd m/b low carb | 100 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 5 | a307 gra square hd m/b low carb hdg | 75 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 8 | a307 gra square hd m/b low carb hdg | 85 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 2 1/4 | a307 gra square hd m/b low carb hdg | 400 |
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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 | 1/2-13 x 1 1/4 | (ft) coarse a307 gra square hd m/b low carb | 67 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 5 1/2 | a307 gra square hd m/b low carb hdg | 120 |
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| ASMC | IL | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 3 | a307 gra square hd m/b low carb hdg | 105 |
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| ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 1/2-13 x 8 | a307 gra square hd m/b low carb zp b18.2.1 | 28 |
|
| GLF | OH | Square Head Bolt | Steel | Plain | 1/2-13 x 5 1/2 | 1/2-13x5-1/2 square hd bolt stl pln b18.2.1 | 310 |
|
| Ababa | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | 1/2-13 x 4 sq hd bolt steel pln b18.2.1 | 1 |
|
| Endries | WI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 2 1/4 | 1/2-13x2-1/4 square head ss flat point plain | 149 |
|
| Endries | WI | Square Head Bolt | Steel | Plain | 1/2-13 x 5 | 1/2-13x5 square head machine bolt plain | 100 |
|
| Endries | WI | Square Head Bolt | Steel | Plain | 1/2-13 x 3 | 1/2-13x3 square head machine bolt plain (2-1/2 minimum thread) | 872 |
|
| Set Screw | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 1 | square knurled cup point heat treat r/c-45 per print | inquire |
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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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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 6 1/2 | 1/2-13x6 1/2 bolt square machine plain | 80 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 1 3/4 | bolt square machine | 600 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 2 1/2 | bolt plow #4 square | 50 |
|
| 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 | Plain | 1/2-13 x 7 | bolt square machine | 29 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 10 | bolt square machine | 3 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 1 | bolt square machine | 1750 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 12 | bolt square machine | 15 |
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| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 1/4 | bolt square machine | 250 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 3 | bolt square machine f/t | 500 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | bolt square machine | 848 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 4 1/2 | bolt square machine | 119 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 6 | bolt square machine | 19 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 | bolt square machine | 830 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 4 1/2 | bolt square machine | 17 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 2 | bolt square machine | 656 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 8 | bolt square machine | 145 |
|
| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 6 | bolt square machine f/t 3/8 blank | 172 |
|
| ACCURA TE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 4 1/2 | bolt square machine f/t | 4 |
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| ACCURATE | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 3/4 | bolt square machine | 50 |
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| American | NY | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 1 1/2 | square m/b zp | 50 |
|
| American | NY | Square Head Bolt | Steel | Zinc/Green | 1/2-13 x 2 | square m/b olive drab | 400 |
|
| American | NY | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/4 | square m/b | 61 |
|
| American | NY | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 3 1/2 | square m/b zp | 50 |
|
| American | NY | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | square m/b | 438 |
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| American | NY | Square Head Bolt | Steel | Galvanized | 1/2-13 x 6 | square m/b hot dipped . | 100 |
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| American | NY | Square Head Bolt | Steel | Zinc/Yellow | 1/2-13 x 7 | square m/b zy | 841 |
|
| American | NY | Square Head Bolt | Steel | Plain | 1/2-13 x 19 | square m/b | 35 |
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| American | NY | Square Head Bolt | Steel | Plain | 1/2-13 x 25 | square m/b | 7 |
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| American | NY | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/2 | square hd bolt | 600 |
|
| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 2 | square bolt | 1537 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Zinc/Clear | 1/2-13 x 1 | square bolt | 5279 |
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| Alma Bolt | MI | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/4 | hdg sq mach bolt | 1434 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 3/4 | square bolt | 1435 |
|
| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 3 | square bolt | 234 |
|
| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 3 1/2 | square bolt | 522 |
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| Alma Bolt | MI | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 4 | square bolt | 531 |
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| METRO IND | OH | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/2 | square hd bolt | 8 |
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| METRO IND | OH | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 3 1/2 | square hd bolt | 25 |
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| MidStates | MI | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 12 | in square hd bolt | 1 |
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| WDMB | IA | Square Head Bolt | Grade A | Galvanized | 1/2-13 x 1 3/4 | bolt sqr fb pt a307 a (hdg) 1/2-13x1 3/4 (W0V0) (W0V0) | 35,000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 6 | bolt & c/s square boltsquare b18.2.1 | 10000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 12 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 10 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 1/4 | bolt & c/s square boltsquare b18.2.1 | 14100 |
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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 | 1/2-13 x 3 1/4 | bolt & c/s square boltsquare b18.2.1 | 1000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 6 | bolt & c/s square boltsquare b18.2.1 | 1000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 4 | bolt & c/s square boltsquare b18.2.1 | 4000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 5 | bolt & c/s square boltsquare b18.2.1 | 750 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 8 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 1 1/4 | bolt & c/s square boltsquare b18.2.1 | 11819 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 3 | bolt & c/s square boltsquare b18.2.1 | 5000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 7 | bolt & c/s square boltsquare b18.2.1 | 800 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 4 | bolt & c/s square boltsquare b18.2.1 | 870 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 2 1/2 | bolt & c/s square boltsquare fulthr b18.2.1 | 10800 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 14 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 3/4 | bolt & c/s square boltsquare b18.2.1 | 6800 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 12 | bolt & c/s square boltsquare b18.2.1 | 500 |
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| BIG BOLT | IL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 2 | bolt & c/s square boltsquare b18.2.1 | 21000 |
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| BIG BOLT | IL | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 2 | bolt & c/s square boltsquare b18.2.1 | 2900 |
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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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| WDMB | IA | Square Head Bolt | Steel | Galvanized | 1/2-13 x 4.18 | bolt sqr mach st (hdg) 1/2-13x4.18 (W0V0) | 12,175 |
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| FasSpcMfg | FL | Square Head Bolt | 316, 317, A4 Stainless | Plain | 1/2-13 x 2 3/4 | square bolt 316 stn | 3 |
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| FasSpcMfg | FL | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 3 | square m/b 18-8 s/s | 1 |
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| FasSpcMfg | FL | Square Head Bolt | 316, 317, A4 Stainless | Plain | 1/2-13 x 3 1/2 | square bolt 316 stainless | 2 |
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| ISSCO | MO | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 1/2 | 695 |
| |
| ISSCO | MO | Square Head Bolt | Grade 2 | Zinc/Clear | 1/2-13 x 4 1/2 | 450 |
| |
| ISSCO | MO | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 | 700 |
| |
| ISSCO | MO | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 4 1/2 | 455 |
| |
| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 square bolts plain b18.2.1 | 2788 |
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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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| B & K FAST | PA | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 square bolts gr 5 plain b18.2.1 | 4 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 square bolts plain full thread b18.2.1 | 1 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 square bolts plain b18.2.1 | 197 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 3 | 1/2-13 x 3 square bolts plain b18.2.1 | 244 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/4 | 1/2-13 x 3 1/4 square bolts plain b18.2.1 | 495 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 square bolts plain b18.2.1 | 8 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 4 | 1/2-13 x 4 square bolts plain b18.2.1 | 708 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 6 | 1/2-13 x 6 square bolts plain b18.2.1 | 467 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 6 | 1/2-13 x 6 square bolts plain full thread b18.2.1 | 120 |
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| B & K FAST | PA | Square Head Bolt | Steel | Plain | 1/2-13 x 19 | 1/2-13 x 19 square bolts plain b18.2.1 | 38 |
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| BHAM | AL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 2 | square hd m/bolt | 250 |
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| BHAM | AL | Square Head Bolt | Grade 5 | Zinc/Clear | 1/2-13 x 3 | square hd m/bolt zn | 3 |
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| BHAM | AL | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 3 1/2 | square hd mach bolt zn | 40 |
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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 | Steel | Plain | 1/2-13 x 4 | 1/2-13 x 4 sq hd mach bolt | 308 |
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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 | 1/2-13 x 8 | 1/2-13 x 8 sq hd mach bolt | 50 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Galvanized | 1/2-13 x 5 | 1/2-13 x 5 sq hd mach bolt hot dip galv | 50 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Galvanized | 1/2-13 x 7 | 1/2-13 x 7 sq hd mach bolt hot dip galv | 30 |
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| ZAL INDUS | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 | 1/2-13 x 1 sq hd mach bolt | 50 |
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| ScrewsInc | OH | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 | 600 |
| |
| Lippin | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 6 1/2 | square head bolt plain | 30 |
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| Lippin | CA | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 3 1/2 | square head bolt zinc plated | 165 |
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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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| Lippin | CA | Square Head Bolt | Steel | Zinc/Clear | 1/2-13 x 3 | square head bolt zinc plated | 60 |
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| Lippin | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 4 1/2 | square head bolt plain | 190 |
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| Lippin | CA | Square Head Bolt | Steel | Zinc/Yellow | 1/2-13 x 8 | square head bolt yellow zinc | 311 |
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| Lippin | CA | Square Head Bolt | Steel | Galvanized | 1/2-13 x 10 | square head bolt hot dipped galvanized | 100 |
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| FastWare | Sask | Square Head Bolt | Grade 5 | Zinc/Yellow | 1/2-13 x 3 1/4 | nc square m/b 0.937 af 1 1/4 tl | 2,429 |
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| JET FITTING | CA | Square Head Bolt | Steel | Plain | 1/2-13 x 1 | 1/2-13x1 square machine bolts steel plain b18.2.1 | 450 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 1/2-13 x 3 1/2 | 1/2-13x3-1/2 (pt) square bolt steel a307 plain b18.2.1 | 54 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 1/2-13 x 7 | 1/2-13x7 (pt) square bolt steel a307 plain b18.2.1 | 25 |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 1 | square hd bolt | - |
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| SRF | AL | Square Head Bolt | Grade 5 | Plain | 1/2-13 x 1 1/4 | square hd bolt | - |
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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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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 2 | square hd bolt | - |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 2 1/4 | square hd bolt | - |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 4 | square hd bolt | - |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 4 1/4 | square hd bolt | 319 |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 6 | square hd bolt | - |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 7 | square hd bolt | - |
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| SRF | AL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 6 1/2 | square hd bolt | - |
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| CNB | IL | Square Head Bolt | Steel | Plain | 1/2-13 x 2 1/2 | square m/b | 251 |
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| CNB | IL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 3 | square m/b gr.2 | 179 |
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| CNB | IL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 4 | square m/m gr. 2 | 100 |
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| CNB | IL | Square Head Bolt | Grade 2 | Plain | 1/2-13 x 5 | square bolt gr.2 | 147 |
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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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| OBRIEN | OH | Square Head Bolt | Steel | Plain | 1/2-13 x 1 3/4 | square m/b | 120 |
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| THRDFAST | FL | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/2 | square hd bolt b18.2.1 | 145 |
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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 | Plain | 1/2-13 x 3 1/2 | square hd bolt b18.2.1 | 8 |
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| THRDFAST | OK | Square Head Bolt | Steel | Plain | 1/2-13 x 1 3/4 | square hd bolt b18.2.1 | 480 |
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| THRDFAST | OK | Square Head Bolt | Steel | Plain | 1/2-13 x 2 | square hd bolt b18.2.1 | 430 |
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| THRDFAST | OK | Square Head Bolt | Steel | Plain | 1/2-13 x 1 1/4 | square hd bolt b18.2.1 | 400 |
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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 | TN | Square Head Bolt | Steel | Plain | 1/2-13 x 1 3/4 | square hd bolt b18.2.1 | 50 |
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| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 2 1/4 | square hd bolt hdg b18.2.1 | 275 |
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| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 | square hd bolt hdg b18.2.1 | 194 |
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| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 8 | square hd bolt rt4 hdg b18.2.1 | 100 |
|
| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 14 | square hd bolt hdg b18.2.1 | 38 |
|
| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 1 1/4 | square hd bolt hdg b18.2.1 | 28 |
|
| THRDFAST | AL | Square Head Bolt | Silicon Bronze | Plain | 1/2-13 x 2 | sili brnz sq bolt b18.2.1 | 22 |
|
| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 12 | square hd bolt hdg b18.2.1 | 16 |
|
| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 16 | square hd bolt hdg b18.2.1 | 62 |
|
| THRDFAST | AL | Square Head Bolt | Steel | Galvanized | 1/2-13 x 9 | square hd bolt rt4 hdg b18.2.1 | stock |
|
| KBS | TN | Square Head Bolt | Steel | Plain | 1/2-13 x 12 | 1/2-13 x 12 square hd mach.bolt b18.2.1 | 4 |
|
| KBS | TN | Square Head Bolt | Steel | Plain | 1/2-13 x 3 1/4 | 1/2-13 x 3 1/4 square hd mach.bolt b18.2.1 | 303 |
|
| KBS | TN | Square Head Bolt | Steel | Plain | 1/2-13 x 4 1/2 | 1/2-13 x 4 1/2 square hd mach.bolt b18.2.1 | 358 |
|
| KBS | TN | Square Head Bolt | Grade 8 | Plain | 1/2-13 x 2 | 1/2-13 x 2 square mach bolt gr-8 b18.2.1 | 110 |
|
| WSB | KY | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 2 | blt sqr (18-8) 1/2-13x2 b18.2.1 | 47 |
|
| GUIDON | NJ | Square Head Bolt | Steel | Plain | 1/2-13 x 2 1/2 | square head machine bolt a307a | 125 |
|
| FMP | MA | Square Head Bolt | Steel | Galvanized | 1/2-13 x 2 | square bolt | 28 |
|
| FMP | MA | Square Head Bolt | Steel | Plain | 1/2-13 x 2 1/2 | square bolt |
| |
| 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 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 2 | Square head set screw cup point STAINLESS STEEL | 200 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 2 1/2 | Square head set screw cup point STAINLESS STEEL | 50 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 3 | Square head set screw cup point STAINLESS STEEL | 25 |
|
| QFS | MI | Square Head Bolt | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 3 1/2 | Square head set screw cup point STAINLESS STEEL | 175 |
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