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Square Head Bolts, Grade A (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 .
128 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 A | Plain | 3/8-16 x 3 | 3/8-16x3 square hd bolt a307 stl pln b18.2.1 () () () | 28 |
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| GLF | OH | Square Head Bolt | Grade A | Plain | 1-8 x 4 | 1-8x4 square hd bolt a307 stl pln b18.2.1 () | 3 |
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| GLF | OH | Square Head Bolt | Grade A | Plain | 1 1/4-7 x 10 | 1-1/4-7x10 square hd bolt a307 stl pln b18.2.1 () | 40 |
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| GLF | OH | Square Head Bolt | Grade A | Plain | 3/4-10 x 7 | 3/4-10x7 square hd bolt a307 stl pln b18.2.1 () | 10 |
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| GLF | OH | Square Head Bolt | Grade A | Plain | 3/4-10 x 6 1/2 | 3/4-10x6-1/2 square hd bolt a307 stl pln b18.2.1 () | 1 |
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| 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 | 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 | 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 | 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 | 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 | Zinc/Clear | 7/8-9 x 4 | a307 gra square hd m/b low carb zp b18.2.1 | 24 |
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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 | Zinc/Clear | 3/8-16 x 1 1/2 | a307 gra square hd m/b low carb zp b18.2.1 | 750 |
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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 | Zinc/Clear | 1/2-13 x 8 | a307 gra square hd m/b low carb zp b18.2.1 | 28 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 1/2-13 x 8 | 1/2-13x8 (pt) unc a307 gra square hd machine bolt low carb pln b18.2.1 | 13 |
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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 | Plain | 1/2-13 x 7 | (pt) coarse a307 gra square hd m/b low carb b18.2.1 | 60 |
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| ASMC | IL | Square Head Bolt | Grade A | Plain | 5/8-11 x 7 | (pt) coarse a307 gra square hd m/b low carb b18.2.1 | 50 |
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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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| BIG BOLT | IL | Square Head Bolt | Grade A | Plain | 1 1/8-7 x 5 1/4 | bolt & c/s square bolta307a b18.2.1 | 213 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 5/8-11 x 2 | 5/8-11x2 a307 gr a square hd bolt pln 747242 b18.2.1 | 25 |
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| JET FITTING | CA | 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 747172 b18.2.1 | 157 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 1/4-20 x 4 | 1/4-20x4 a307 gr a square hd bolt pln 747023 b18.2.1 | 589 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 2 3/4 | 3/8-16x2 3/4 a307 gr a square hd bolt p 747099 b18.2.1 | 50 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 1/2-13 x 7 | 1/2-13x7 a307 gr a square hd bolt pln 747194 b18.2.1 | 75 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 5/8-11 x 3 1/2 | 5/8-11x3 1/2 a307 gr a square hd bolt p 747248 b18.2.1 | 82 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 5/16-18 x 3 1/2 | 5/16-18x3 1/2 a307 gr a square hd bolt 747061 b18.2.1 | 320 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 a307 gr a square hd bolt pl 747046 b18.2.1 | 600 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 1 3/4 | 3/8-16x1 3/4 a307 gr a square hd bolt p 747094 b18.2.1 | 255 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 5/8-11 x 2 1/2 | 5/8-11x2 1/2 a307 gr a square hd bolt p 747244 b18.2.1 | 50 |
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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 a307 gr a square hd bolt p 747182 b18.2.1 | 7 |
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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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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 (pt) square bolt steel a307 plain b18.2.1 | 500 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 1 3/4 | 3/8-16x1-3/4 (pt) square bolt steel a307 plain b18.2.1 | 250 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 2 3/4 | 3/8-16x2 3/4 (pt) bolts square head bolts a307 grade a square head bolt plain (inch) b18.2.1 | 400 |
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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 3/8-16 x 5 | 3/8-16x5 (pt) bolts square head bolts a307 grade a square head bolt plain (inch) b18.2.1 | 150 |
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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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| JET FITTING | CA | Square Head Bolt | Grade A | Plain | 5/8-11 x 3 1/2 | 5/8-11x3-1/2 (pt) square bolt steel a307 plain b18.2.1 | 95 |
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| All Size | TX | Square Head Bolt | Grade A | Plain | 5/8-11 x 3 | 5/8-11 x 3 a307 square head bolt plain b18.2.1 | 40 |
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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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