FCH News

1 Square Head Bolts (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 .

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
GLFOHSquare Head BoltGrade APlain1-8 x 41-8x4 square hd bolt a307 stl pln b18.2.1 ()2
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BIG BOLTILSquare Head BoltGrade 5Plain1-8 x 20bolt & c/s square boltsquare b18.2.1400
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BIG BOLTILSquare Head BoltGrade 8Plain1-8 x 16bolt & c/s square boltsquare b18.2.1150
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BIG BOLTILSquare Head BoltGrade 5Plain1-14 x 18bolt & c/s square boltb18.2.1400
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BIG BOLTILSquare Head BoltGrade 8Plain1-8 x 12bolt & c/s square boltsquare b18.2.1200
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BIG BOLTILSquare Head BoltGrade 5Plain1-14 x 20bolt & c/s square boltb18.2.1400
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BIG BOLTILSquare Head BoltGrade 8Plain1-8 x 20bolt & c/s square boltsquare b18.2.1150
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BIG BOLTILSquare Head BoltGrade 5Plain1-8 x 16bolt & c/s square boltsquare b18.2.1400
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BIG BOLTILSquare Head BoltGrade 5Plain1-14 x 30bolt & c/s square boltb18.2.1400
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BIG BOLTILSquare Head BoltGrade 5Plain1-8 x 8bolt & c/s square boltsquare b18.2.1750
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BIG BOLTILSquare Head BoltGrade 5Plain1-8 x 10bolt & c/s square boltsquare b18.2.1930
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BIG BOLTILSquare Head BoltGrade 8Plain1-8 x 8bolt & c/s square boltsquare b18.2.1350
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BIG BOLTILSquare Head BoltGrade 5Plain1-14 x 4 3/4bolt & c/s square boltb18.2.11350
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BIG BOLTILSquare Head BoltGrade 5Plain1-14 x 14bolt & c/s square boltb18.2.1400
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B & K FASTPASquare Head BoltGrade 8Plain1-8 x 3 1/21-8 x 3 1/2 square bolts gr 8 plain b18.2.12
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B & K FASTPASquare Head BoltSteelPlain1-8 x 3 1/21-8 x 3 1/2 square bolts plain b18.2.1305
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B & K FASTPASquare Head BoltGrade 5Plain1-8 x 51-8 x 5 square bolt gr 5 plain b18.2.112
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B & K FASTPASquare Head BoltSteelPlain1-8 x 51-8 x 5 square bolts plain b18.2.1295
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B & K FASTPASquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 181-8 x 18 square bolts t-304 stainless b18.2.11
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OSSCORISquare Head BoltSteelPlain1-8 x 71-8x7 square hd mach bolt b18.2.13
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Bostwick INSquare Head BoltGrade 8Plain1-14 x 51-14 x 5 square head bolt grade 8 b18.2.130
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Bostwick INSquare Head BoltGrade 8Plain1-14 x 4 1/21-14 x 4-1/2 square head bolt grade 8 b18.2.112
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THRDFASTTNSquare Head BoltGrade 5Plain1-8 x 8gr5 square hd bolt b18.2.13
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THRDFASTALSquare Head BoltSteelGalvanized1-8 x 20square hd bolt hdg b18.2.119
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THRDFASTALSquare Head BoltSteelGalvanized1-8 x 4square hd bolt hdg b18.2.113
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THRDFASTALSquare Head BoltSteelGalvanized1-8 x 5square hd bolt hdg b18.2.158
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THRDFASTALSquare Head BoltSteelGalvanized1-8 x 28square hd bolt hdg b18.2.14
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THRDFASTALSquare Head BoltSteelGalvanized1-8 x 12square hd bolt rt6 hdg b18.2.1stock
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KBSTNSquare Head BoltGrade 8Plain1-8 x 181-8 x 18 square mach bolt gr-8 b18.2.128
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KBSTNSquare Head BoltGrade 8Plain1-8 x 51-8 x 5 square mach bolt gr-8 b18.2.152
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KBSTNSquare Head BoltGrade 8Plain1-8 x 151-8 x 15 square!machbolt gr-8 b18.2.12
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KBSTNSquare Head BoltGrade 8Plain1-8 x 3 1/21-8 x 3 1/2 square mach bolt gr-8 b18.2.120
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KBSTNSquare Head BoltGrade 8Plain1-8 x 121-8 x 12 square mach bolt gr-8 b18.2.126
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KBSTNSquare Head BoltSteelPlain1-8 x 2 3/41-8 x 2 3/4 square hd mach.bolt b18.2.15
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KBSTNSquare Head BoltGrade 8Plain1-8 x 6 1/21-8 x 6 1/2 square!machbolt gr-8 b18.2.155
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KBSTNSquare Head BoltGrade 8Plain1-8 x 6 3/41-8 x 6 3/4 square mach bolt gr-8 b18.2.110
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KBSTNSquare Head BoltGrade 5Plain1-8 x 5 1/21-8 x 5 1/2 square mach.bolt gr-5 b18.2.112
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KBSTNSquare Head BoltGrade 8Plain1-8 x 81-8 x 8 square!machbolt gr-8 b18.2.152
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KBSTNSquare Head BoltGrade 8Plain1-8 x 5 1/21-8 x 5 1/2 square mach bolt gr-8 b18.2.140
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