Square Head Bolts, Grade A
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 .
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Buy Square Head Bolts from one of our FCH Network Members | ||||||||
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Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
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 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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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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SunPack | FL | Square Head Bolt | Grade A | Zinc/Clear | 5/8-11 x 3 | 5/8-11x3 a307 square head bolt pt zinc | 105 |
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SunPack | FL | Square Head Bolt | Grade A | Zinc/Clear | 5/8-11 x 5 | 5/8-11x5 a307 square head bolt pt zinc | 70 |
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SunPack | FL | Square Head Bolt | Grade A | Zinc/Clear | 3/4-10 x 4 | 3/4-10x4 a307 square head bolt pt zinc | 30 |
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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 | Zinc/Clear | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 a307 gra square hd machine bolt low carb zp | 480 |
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ASMC | IL | Square Head Bolt | Grade A | Plain | 3/8-16 x 6 | 3/8-16x6 (pt) coarse a307 gra square hd machine bolt low carb pln unc | 100 |
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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 | Galvanized | 7/8-9 x 4 | a307 gra square hd m/b low carb hdg | 19 |
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ASMC | IL | Square Head Bolt | Grade A | Plain | 3/4-10 x 4 | (pt) coarse a307 gra square hd m/b low carb | 61 |
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ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 5/16-18 x 1 3/4 | 5/16-18x1 3/4 a307 gra square hd machine bolt low carb zp | 1,050 |
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ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 1/4-20 x 4 | 1/4-20x4 a307 gra square hd machine bolt low carb zp | 600 |
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ASMC | IL | Square Head Bolt | Grade A | Zinc/Clear | 1/4-20 x 2 | a307 gra square hd m/b low carb zp | 1,250 |
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ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 1 | a307 gra square hd m/b low carb hdg | 21 |
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ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 1 1/4 | a307 gra square hd m/b low carb hdg | 250 |
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ASMC | IL | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 1 1/2 | a307 gra square hd m/b low carb hdg | 1,143 |
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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 | Plain | 5/8-11 x 1 1/2 | (ft) coarse a307 gra square hd m/b low carb | 129 |
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Endries | WI | Square Head Bolt | Grade A | Plain | 5/8-11x4 a307 grade a square head machine bolt plain | 108 |
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SunPack | FL | Square Head Bolt | Grade A | Plain | 1 1/8-7 x 9 | 1-1/8-7x9 a307 square head bolt plain | 2 |
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SWACO | OH | 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 | 105 |
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SWACO | OH | 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 | 50 |
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SWACO | OH | 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 | 7 |
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SWACO | OH | Square Head Bolt | Grade A | Plain | 5/8-11 x 2 | 5/8-11x2 a307 gr a square hd bolt pln | 25 |
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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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SunPack | FL | Square Head Bolt | Grade A | Cadmium | 5/8-11 x 3 1/4 | 5/8-11x3 1/4 a307 square head machine bolt cad plated | 126 |
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Purchase | MO | Square Head Bolt | Grade A | Plain | 1-8 x 5 1/2 | 1-8 x 5 1/2 square machine bolt 307a plain | 10 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 5/16-18 x 1 1/2 | 5/16-18x1 1/2 square hd mach bolt a307 gr a steel zinc yellow | 9,075 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/4-10 x 2 1/4 | 3/4-10x2 1/4 square hd mach bolt a307 steel zinc yellow ipc to suplly notarized material cert | 289 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/4-10 x 3 1/2 | 3/4-10x3 1/2 square hd mach bolt a307 steel zinc yellow | 975 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/4-10 x 4 1/2 | 3/4-10x4 1/2 square hd mach bolt a307 steel zinc yellow | 62 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/4-10 x 3 | 3/4-10x3 square hd mach bolt a307 steel zinc yellow ipc to suplly notarized material cert | 3,707 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 5/8-11 x 3 | 5/8-11x3 square hd mach bolt a307 gr a steel zinc yellow | 417 |
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IPC | VA | Square Head Bolt | Grade A | Plain | 1/4-20 x 1 3/4 | 1/4-20x1 3/4 square hd mach bolt a307 gr a steel grade 2 acceptable | 200 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/4-10 x 3 1/4 | 3/4-10x3 1/4 square hd mach bolt a307 steel zinc yellow | 240 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 square hd mach bolt a307 steel zinc yellow | 707 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 5/8-11 x 2 1/2 | 5/8-11x2 1/2 square hd mach bolt a307 steel zinc yellow | 90 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 5/8-11 x 2 3/4 | 5/8-11x2 3/4 square hd mach bolt a307 steel zinc yellow | 133 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 3/8-16 x 2 | 3/8-16x2 partial thread square hd mach bolt a307 gr a steel zinc yellow | 180 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 1/2-13 x 3 | 1/2-13x3 square hd mach bolt a307 steel zinc yellow | 675 |
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IPC | VA | Square Head Bolt | Grade A | Zinc/Yellow | 1/2-13 x 2 | 1/2-13x2 partial thread square hd mach bolt a307 gr a steel zinc yellow | 163 |
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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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WDMB | IA | Square Head Bolt | Grade A | Plain | 9 x 4 | blt-sqr-a307 a-(pl)-7/8_9x4 (W0V0) | 250 |
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SunPack | FL | Square Head Bolt | Grade A | Cadmium | 5/8-11 x 3 1/4 | a307 square m/b | 126 |
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SunPack | FL | Square Head Bolt | Grade A | Zinc/Clear | 5/8-11 x 5 | a307 square bolt pt | 70 |
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SunPack | FL | Square Head Bolt | Grade A | Zinc/Clear | 5/8-11 x 3 | a307 square bolt pt | 105 |
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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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BHAM | TX | Square Head Bolt | Grade A | Galvanized | 3/8-16 x 4 1/2 | a307 square hd mach bolt hdg | 257 |
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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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ASFCORP | MI | Square Head Bolt | Grade A | Zinc/Clear | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 sq hd blt a307 gr a tri zn fe/zn 5an | 340 |
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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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