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1 1/8 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 .

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

Buy Square Head Bolts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
BIG BOLTILSquare Head BoltGrade 5Plain1 1/8-7 x 16bolt & c/s square boltsquare b18.2.1 b18.2.1400
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/8-7 x 16bolt & c/s square boltsquare b18.2.1 b18.2.1300
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/8-12 x 16bolt & c/s square boltb18.2.1200
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 16square m/b25
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/8-7 x 20bolt & c/s square boltsquare b18.2.1 b18.2.1200
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/8-12 x 22bolt & c/s square boltb18.2.1200
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EndriesWISquare Head BoltGrade 5Plain1 1/8-7 x 3 3/41-1/8-7x3-3/4 grade 5 square head machine bolt plain6
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EndriesWISquare Head BoltSteelPlain1 1/8-7 x 3 3/41 1/8-7x3 3/4 square head machine bolt plain52
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 3 3/4square m/b25
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JacksonMSSquare Head BoltGrade 2Plain1 1/8 x 4nc square bolt gr. 278
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 4bolt square machine140
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 4square m/b140
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LibertyILSquare Head BoltSteelPlain1 1/8-7 x 4square m/b 2.5 thread length25
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/8-7 x 4 1/4bolt & c/s square boltb18.2.1540
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 4 1/2bolt square machine18
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THRDFASTFLSquare Head BoltSteelPlain1 1/8-7 x 4 1/2square hd bolt b18.2.14
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 4 1/2square m/b75
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 5bolt square machine5
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 5square m/b50
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Valley NuWASquare Head BoltSteelPlain1 1/8-7 x 5nc square bolt pl16
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BIG BOLTILSquare Head BoltGrade APlain1 1/8-7 x 5 1/4bolt & c/s square bolta307a b18.2.1213
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AmericanNYSquare Head BoltSteelPlain1 1/8-7 x 5 1/2square hd m/b75
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 5 1/2bolt square machine36
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MastBoltOHSquare Head BoltGrade 5Plain1 1/8 x 5 1/21-1/8 x 5-1/2 square head switch bolt gr 5 with 2-1/2 thread dr@ 5-1/4 w/9/32 hole50 pcs
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KBSTNSquare Head BoltGrade 8Plain1 1/8-7 x 5 1/21-1/8-7 x 5 1/2 square!machbolt gr-8 b18.2.115
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MastBoltOHSquare Head BoltGrade 5Plain1 1/8 x 5 1/21-1/8 x 5-1/2 square head switch bolt gr 5 with 2-1/2 thread dr@ 5-1/4 w/9/32 hole50
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 5 1/2square m/b45
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 6square m/b50
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CNBILSquare Head BoltGrade 5Plain1 1/8-7 x 7square gr.5216
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 8bolt square machine62
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/8-7 x 8bolt & c/s square boltb18.2.1400
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LibertyILSquare Head BoltSteelPlain1 1/8-7 x 8square m/b machine bolt7
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 8square m/b70
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 8 1/2bolt square machine31
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KBSTNSquare Head BoltGrade 8Plain1 1/8-7 x 8 1/21-1/8-7 x 8 1/2 square mach bolt gr-8 b18.2.16
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 8 1/2square m/b70
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 9bolt square machine1
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SunPackFLSquare Head BoltGrade APlain1 1/8-7 x 91-1/8-7x9 a307 square head bolt plain2
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 9 1/2bolt square machine1
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KBSTNSquare Head BoltGrade 8Plain1 1/8-7 x 101-1/8-7 x 10 inch square mach bolt gr-8 b18.2.14
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/8-7 x 10bolt & c/s square boltb18.2.1144
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B & K FASTPASquare Head BoltSteelPlain1 1/8-7 x 10 1/41 1/8-7 x 10 1/4 square bolts plain b18.2.11
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LibertyILSquare Head BoltGrade 5Plain1 1/8-7 x 11 1/2square hd mach bolt mach bolt57
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 12bolt square machine2
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/8-12 x 12bolt & c/s square boltb18.2.1200
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 12square20
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ACCURATEILSquare Head BoltSteelPlain1 1/8-7 x 12square m/b20
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MidStatesMISquare Head BoltGrade 2Plain1 1/8-7 x 131 1/8-7 x 13 square hd bolt gr 2 pln1
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Set ScrewILSquare Head BoltGrade 8Plain1 1/8-7 x 15.01 1/8-7x15.0 grade 8 square boltinquire
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