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12 inch length 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 .

29 results, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
BIG BOLTILSquare Head BoltGrade 5Plain3/8-16 x 12bolt & c/s square boltsquare b18.2.1500
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BIG BOLTILSquare Head BoltGrade 5Plain5/8-11 x 12bolt & c/s square boltsquare b18.2.1700
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BIG BOLTILSquare Head BoltGrade 8Plain5/8-11 x 12bolt & c/s square boltsquare b18.2.11000
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BIG BOLTILSquare Head BoltGrade 5Plain1/2-13 x 12bolt & c/s square boltsquare b18.2.1500
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BIG BOLTILSquare Head BoltGrade 5Plain1 3/8-12 x 12bolt & c/s square boltb18.2.1200
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/8-12 x 12bolt & c/s square boltb18.2.1200
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BIG BOLTILSquare Head BoltSteelPlain5/16-18 x 12bolt & c/s square boltsquare b18.2.11000
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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 1/4-12 x 12bolt & c/s square boltb18.2.1841
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BIG BOLTILSquare Head BoltGrade 5Plain3/4-16 x 12bolt & c/s square boltb18.2.1733
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BIG BOLTILSquare Head BoltGrade 8Plain1 3/8-6 x 12bolt & c/s square boltsquare b18.2.1150
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BIG BOLTILSquare Head BoltGrade 5Plain7/8-9 x 12bolt & c/s square boltsquare b18.2.1543
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BIG BOLTILSquare Head BoltGrade 8Plain3/4-10 x 12bolt & c/s square boltsquare b18.2.11000
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BIG BOLTILSquare Head BoltGrade 8Plain1/2-13 x 12bolt & c/s square boltsquare b18.2.1500
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/2-6 x 12bolt & c/s square boltsquare b18.2.1250
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/2-6 x 12bolt & c/s square boltsquare b18.2.1163
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BIG BOLTILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-18 x 12bolt & c/s square bolt300 (a1 a2 18-8 304 310 etc.)b18.2.1300
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BIG BOLTILSquare Head BoltSteelPlain1/4-20 x 12bolt & c/s square boltsquare b18.2.11000
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QFCTXSquare Head BoltGrade AGalvanized3/4-10 x 123/4-10x12 sq. head bolt a307 hdg b18.2.122
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CascadeORSquare Head BoltSteelPlain7/8-9 x 12square m/b b18.2.19
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THRDFASTFLSquare Head BoltSteelGalvanized3/4-10 x 12square hd bolt hdg b18.2.11
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THRDFASTALSquare Head BoltSteelGalvanized5/8-11 x 12square hd bolt rt6 hdg b18.2.1stock
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THRDFASTALSquare Head BoltSteelGalvanized1/2-13 x 12square hd bolt hdg b18.2.116
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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 121-8 x 12 square mach bolt gr-8 b18.2.126
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 121-1/4-7 x 12 square!machbolt gr-8 b18.2.110
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KBSTNSquare Head BoltGrade 8Plain1 1/2-6 x 121-1/2-6 x 12 square mach bolt gr-8 b18.2.125
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KBSTNSquare Head BoltSteelPlain1/2-13 x 121/2-13 x 12 square hd mach.bolt b18.2.14
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KBSTNSquare Head BoltGrade 8Plain7/8-9 x 127/8-9 x 12 square!machbolt gr-8 b18.2.113
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