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1 1/4 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 .

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

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
AmericanNYSquare Head BoltSteelPlain1 1/4 x 1 1/2square bolt25
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 16bolt square machine5
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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 16square hd bolt5
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JacksonMSSquare Head BoltGrade 2Plain1 1/4 x 16nc square bolt gr. 21
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 161-1/4-7 x 16 square!machbolt gr-8 b18.2.123
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/4-7 x 16bolt & c/s square boltsquare b18.2.1500
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 16square m/b50
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/4-7 x 18bolt & c/s square boltsquare b18.2.1500
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/4-12 x 18bolt & c/s square boltb18.2.1463
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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 20square hd bolt19
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/4-7 x 20bolt & c/s square boltsquare b18.2.1500
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THRDFASTALSquare Head BoltSteelGalvanized1 1/4-7 x 22square hd bolt rt6 hdg tfi b18.2.1stock
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THRDFASTALSquare Head BoltSteelGalvanized1 1/4-7 x 24square hd bolt rt6 hdg b18.2.13
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THRDFASTALSquare Head BoltSteelGalvanized1 1/4-7 x 28square hd bolt rt6 hdg b18.2.1stock
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Bostwick INSquare Head BoltGrade 8Plain1 1/4-7 x 3 1/21 1/4-7 x 3 1/2 square hd bolt full thread gr 8 b18.2.12
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THRDFASTALSquare Head BoltSteelGalvanized1 1/4-7 x 36square hd bolt rt6 hdg b18.2.14
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 4bolt square machine19
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 41-1/4-7 x 4 square!machbolt gr-8 b18.2.150
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KBSTNSquare Head BoltGrade 5Plain1 1/4-7 x 41-1/4-7 x 4 square mach.bolt gr-5 b18.2.110
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 4square m/b50
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OSSCORISquare Head BoltSteelPlain1 1/4-7 x 41 1/4-7x4 square hd mach bolt b18.2.13
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 4 1/21-1/4-7 x 4 1/2 square!machbolt gr-8 b18.2.190
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EndriesWISquare Head BoltGrade 5Plain1 1/4-7 x 51-1/4-7x5 grade 5 square head machine bolt plain65
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JacksonMSSquare Head BoltGrade 8Plain1 1/4 x 5square bolt gr. 8120
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/4-12 x 5bolt & c/s square bolt 1/4b18.2.1495
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MidStatesMISquare Head BoltGrade 5Plain1 1/4-7 x 51 1/4-7 x 5in square hd bolt gr 5 pln8
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 5 1/2bolt square machine7
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EndriesWISquare Head BoltSteelGalvanized1 1/4-7 x 5 1/21-1/4-7x5-1/2 square head machine bolt hot dip galvanized5
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 5 1/21-1/4-7 x 5 1/2 square!machbolt gr-8 b18.2.150
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JacksonMSSquare Head BoltGrade 8Plain1 1/4 x 6square bolt gr. 810
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 61-1/4-7 x 6 square!machbolt gr-8 b18.2.136
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/4-7 x 6bolt & c/s square boltsquare b18.2.1500
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Kanebridge ILSquare Head BoltSteelPlain1 1/4-7 x 61 1/4-7x6 square machine bolt plain0.250
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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 61 1/4-7 x 6in square hd bolt gr 8 pln3
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HayesCASquare Head BoltSteelPlain1 1/4-7 x 6 1/21 1/4-7 x 6 1/2 square hd bolt pln20
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 7bolt square machine65
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SRFALSquare Head BoltGrade 2Plain1 1/4-7 x 7square hd bolt11
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MidStatesMISquare Head BoltGrade 2Plain1 1/4-7 x 7square hd bolt5
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OBRIENOHSquare Head BoltGrade 5Plain1 1/4-7 x 7square m/b gr52
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 7square m/b100
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Bostwick INSquare Head BoltGrade 8Plain1 1/4-7 x 71 1/4-7 x 7 square hd bolt gr 8 b18.2.120
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 7 1/2bolt square machine10
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 7 1/21-1/4-7 x 7 1/2 square!machbolt gr-8 b18.2.139
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 7 1/2square m/b100
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 8bolt square machine25
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 81-1/4-7 x 8 square!machbolt gr-8 b18.2.124
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/4-7 x 8bolt & c/s square boltsquare b18.2.1500
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 8square m/b156
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 8 1/21-1/4-7 x 8 1/2 square!machbolt gr-8 b18.2.143
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B & K FASTPASquare Head BoltGrade 8Plain1 1/4-7 x 91 1/4-7 x 9 square bolts gr 8 plain b18.2.12
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 91-1/4-7 x 9 square!machbolt gr-8 b18.2.146
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 10bolt square machine2
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GLFOHSquare Head BoltGrade APlain1 1/4-7 x 101-1/4-7x10 square hd bolt a307 stl pln b18.2.1 ()40
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THRDFASTFLSquare Head BoltSteelPlain1 1/4-7 x 10square hd bolt b18.2.12
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KBSTNSquare Head BoltGrade 8Plain1 1/4-7 x 101-1/4-7 x 10 inch square!machbolt gr-8 b18.2.126
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/4-12 x 10bolt & c/s square boltb18.2.1100
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BIG BOLTILSquare Head BoltGrade 8Plain1 1/4-7 x 10bolt & c/s square boltsquare b18.2.1 b18.2.1500
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 10square m/b50
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CNBILSquare Head Bolt316, 317, A4 StainlessPlain1 1/4-7 x 10 1/2square m/b, 316 ss2
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THRDFASTALSquare Head BoltSteelPlain1 1/4-7 x 11square hd bolt b18.2.13
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 11square m/b176
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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 11square hd bolt1
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CNBILSquare Head Bolt316, 317, A4 StainlessPlain1 1/4-7 x 11 1/2square m/b, 316 ss2
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MidStatesMISquare Head BoltGrade 5Plain1 1/4-7 x 12in square hd bolt4
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JacksonMSSquare Head BoltGrade 2Plain1 1/4 x 12nc square bolt gr. 2 9 1/2 threads7
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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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BIG BOLTILSquare Head BoltGrade 5Plain1 1/4-12 x 12bolt & c/s square boltb18.2.1841
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CNBILSquare Head BoltGrade 2Plain1 1/4-7 x 13square m/b with 4 inches of thread per drawing b1023 item 35
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MidStatesMISquare Head BoltGrade 5Plain1 1/4-7 x 13square hd bolt1
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/4-7 x 13bolt & c/s square boltb18.2.1671
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 14bolt square machine29
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HBBOLTCASquare Head BoltGrade 8Plain1 1/4-7 x 14square hd bolt w/6 thrd7
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KBSTNSquare Head BoltGrade 5Plain1 1/4-7 x 141-1/4-7 x 14 square mach.bolt gr-5 b18.2.12
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BIG BOLTILSquare Head BoltGrade 5Plain1 1/4-12 x 14bolt & c/s square boltb18.2.1543
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 15bolt square machine79
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LibertyILSquare Head BoltSteelPlain1 1/4-7 x 15square m/b machine bolt10
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ACCURATEILSquare Head BoltSteelPlain1 1/4-7 x 15square m/b104
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JacksonMSSquare Head BoltGrade 8Plain1 1/4 x 12 square head bolt gr. 8 plain4
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