7/8 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 .

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Zoro Tools Inc.Square Head BoltSteelPlain7/8-97/8-9 carbon steel square bolt die
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B & K FASTPASquare Head BoltSteelGalvanized7/8-9 x 167/8-9 x 16 galv square bolts 6 thread b18.2.132
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 3 1/27/8-9 x 3 1/2 square bolts plain b18.2.1579
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 47/8-9 x 4 square bolts plain b18.2.11
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 4 1/27/8-9 x 4 1/2 square bolts plain b18.2.183
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 57/8-9 x 5 square bolts plain b18.2.158
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 5 1/27/8-9 x 5 1/2 square bolts plain b18.2.1277
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 67/8-9 x 6 square bolts plain b18.2.1119
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 6 1/27/8-9 x 6 1/2 sq. bolts plain b18.2.19
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 77/8-9 x 7 square bolts plain b18.2.1255
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 107/8-9 x 10 square bolts plain b18.2.11
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 10 1/27/8-9 x 10 1/2 square bolts plain b18.2.167
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 2 1/47/8-9 x 2 1/4 square bolts plain b18.2.11331
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B & K FASTPASquare Head BoltGrade 5Plain7/8-9 x 37/8-9 x 3 square bolts gr 5 plain b18.2.125
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 37/8-9 x 3 square bolts plain b18.2.1314
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AmericanNYSquare Head BoltSteelPlain7/8-9 x 1 1/4square m/b100
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AmericanNYSquare Head BoltSteelPlain7/8-9 x 2 1/2square m/b50
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AmericanNYSquare Head BoltSteelPlain7/8-9 x 8square m/b17
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AmericanNYSquare Head BoltSteelPlain7/8-9 x 9square bolt9
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AmericanNYSquare Head BoltSteelPlain7/8-9 x 5square bolt23
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HayesCASquare Head BoltSteelGalvanized7/8-9 x 4 1/27/8-9 x 4 1/2 square hd bolt hdg5
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HayesCASquare Head BoltSteelZinc/Clear7/8-9 x 4 1/27/8-9 x 4 1/2 square hd bolt zinc12
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HayesCASquare Head BoltSteelGalvanized7/8-9 x 27/8-9 x 2 square hd bolt hdg22
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HayesCASquare Head BoltSteelZinc/Clear7/8-9 x 77/8-9 x 7 square hd bolt zinc12
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YANKEENHSquare Head BoltSteelPlain7/8-9 x 47/8-9 x 4 square hd bolt17
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EndriesWISquare Head BoltSteelPlain7/8-9 x 37/8-9x3 square head machine bolt plain144
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Cal FastenrsCASquare Head BoltSteelPlain7/8-9 x 10square m/b30
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 1 1/2bolt square machine105
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 16bolt square machine2
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 1 3/4bolt square machine72
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 18bolt square machine4
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 3 1/4bolt square machine93
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ACCURATEILSquare Head BoltSteelZinc/Clear7/8-9 x 3 1/4bolt square machine42
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 4 1/4bolt square machine25
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 5bolt square machine16
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 7 1/2bolt square machine83
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 10bolt square machine100
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 6bolt square machine146
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ASMCILSquare Head BoltGrade AZinc/Clear7/8-9 x 4a307 gra square hd m/b low carb zp b18.2.124
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ASMCILSquare Head BoltGrade AGalvanized7/8-9 x 4a307 gra square hd m/b low carb hdg19
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LippinCASquare Head BoltSteelPlain7/8-9 x 9square head bolt plain40
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JacksonMSSquare Head BoltGrade 8Plain7/8-9 x 3square m/b finish j4293
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SRFALSquare Head BoltGrade 2Plain7/8-9 x 3 1/4square hd bolt-
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SRFALSquare Head BoltGrade 5Plain7/8-9 x 3square hd bolt1
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SRFALSquare Head BoltGrade 8Plain7/8-9 x 7square hd bolt3
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WDMBIASquare Head BoltGrade AGalvanized7/8-9 x 2 1/2blt sqr a307 a (hdg) 7/8-9x2 1/25
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WDMBIASquare Head BoltSteelPlain7/8-9 x 4 1/2blt mch sqhd st (pl) 7/8-9x4 1/2440
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WDMBIASquare Head BoltGrade APlain7/8-9 x 4blt sqr a307 a (pl) 7/8-9x4221
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CascadeORSquare Head BoltSteelPlain7/8-9 x 12square m/b b18.2.19
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BIG BOLTILSquare Head BoltGrade 5Plain7/8-9 x 14bolt & c/s square boltsquare b18.2.1566
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BIG BOLTILSquare Head BoltGrade 5Plain7/8-14 x 20bolt & c/s square boltb18.2.1600
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BIG BOLTILSquare Head BoltGrade 8Plain7/8-9 x 26bolt & c/s square boltsquare b18.2.1260
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BIG BOLTILSquare Head BoltGrade 5Plain7/8-14 x 14bolt & c/s square boltb18.2.1600
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BIG BOLTILSquare Head BoltGrade 5Plain7/8-9 x 10bolt & c/s square boltsquare b18.2.1521
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BIG BOLTILSquare Head BoltGrade 8Plain7/8-9 x 20bolt & c/s square boltsquare b18.2.1310
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BIG BOLTILSquare Head BoltGrade 5Plain7/8-9 x 2 3/4bolt & c/s square boltsquare b18.2.13700
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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 5Plain7/8-9 x 24bolt & c/s square boltb18.2.1300
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BIG BOLTILSquare Head BoltGrade 5Plain7/8-9 x 8bolt & c/s square boltsquare b18.2.1450
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Spring BoTXSquare Head Bolt316, 317, A4 StainlessPlain7/8-9 x 4 1/47/8 (9) x 4-1/4 square bolt 316ss fully threaded b18.2.1 b18.2.1 usainquire
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Spring BoTXSquare Head Bolt316, 317, A4 StainlessPlain7/8-9 x 4 1/47/8(9) x 4-1/4 square bolt 316ss fully threaded b18.2.1 usainquire
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OBRIENOHSquare Head BoltSteelPlain7/8-9 x 2 1/2square hd bolt43
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MidStatesMISquare Head BoltGrade 8Plain7/8-9 x 8in square hd bolt10
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MidStatesMISquare Head BoltGrade 5Plain7/8-9 x 9 1/2square hd bolt5
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MidStatesMISquare Head BoltGrade 8Plain7/8-9 x 7 1/27/8-9 x 7 1/2 square hd bolt gr 8 pln8
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THRDFASTFLSquare Head BoltSteelGalvanized7/8-9 x 42square hd bolt rt6 hdg b18.2.1stock
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THRDFASTFLSquare Head BoltSteelGalvanized7/8-9 x 18square hd bolt rt6 hdg b18.2.110
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THRDFASTFLSquare Head BoltSteelGalvanized7/8-9 x 22square hd bolt hdg b18.2.15
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THRDFASTFLSquare Head BoltSteelGalvanized7/8-9 x 42square hd bolt rt6 hdg b18.2.13
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THRDFASTFLSquare Head BoltSteelGalvanized7/8-9 x 46square hd bolt rt6 hdg b18.2.13
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THRDFASTFLSquare Head BoltSteelGalvanized7/8-9 x 44square hd bolt rt6 hdg b18.2.12
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THRDFASTOKSquare Head BoltSteelGalvanized7/8-9 x 4square hd bolt hdg b18.2.1215
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THRDFASTOKSquare Head BoltSteelGalvanized7/8-9 x 3square hd bolt hdg b18.2.140
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THRDFASTOKSquare Head BoltSteelGalvanized7/8-9 x 3square hd bolt rt2.25 hdg b18.2.120
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THRDFASTALSquare Head BoltSteelGalvanized7/8-9 x 14square hd bolt hdg b18.2.135
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THRDFASTALSquare Head BoltSteelGalvanized7/8-9 x 4square hd bolt hdg b18.2.110
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THRDFASTALSquare Head BoltSteelGalvanized7/8-9 x 28square hd bolt rt6 hdg b18.2.1stock
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THRDFASTALSquare Head BoltSteelGalvanized7/8-9 x 30square hd bolt hdg b18.2.15
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THRDFASTALSquare Head BoltSteelGalvanized7/8-9 x 20square hd bolt hdg b18.2.15
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THRDFASTMSSquare Head BoltSteelGalvanized7/8-9 x 9 1/2square hd bolt hdg b18.2.117
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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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KBSTNSquare Head BoltGrade 8Plain7/8-9 x 147/8-9 x 14 square!machbolt gr-8 b18.2.127
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KBSTNSquare Head BoltSteelPlain7/8-9 x 47/8-9 x 4 square hd mach.bolt b18.2.1123
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KBSTNSquare Head BoltGrade 8Plain7/8-9 x 6 1/27/8-9 x 6 1/2 square mach bolt gr-8 b18.2.174
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KBSTNSquare Head BoltGrade 5Plain7/8-9 x 87/8-9 x 8 square mach.bolt gr-5 b18.2.120
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KBSTNSquare Head BoltGrade 8Plain7/8-9 x 107/8-9 x 10 inch square mach bolt gr-8 b18.2.160
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THRDFASTFLSquare Head BoltGrade 5Plain7/8-9 x 5gr5 square hd bolt b18.2.110
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THRDFASTMSSquare Head BoltSteelGalvanized7/8-9 x 9square hd bolt hdg b18.2.150
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THRDFASTALSquare Head BoltGrade 2Galvanized7/8-9 x 20tfi square hd bolt rt 7in hdg b18.2.120
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THRDFASTALSquare Head BoltGrade 2Galvanized7/8-9 x 17tfi square hd bolt rt 7in hdg b18.2.158
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THRDFASTALSquare Head BoltGrade 2Galvanized7/8-9 x 19tfi square hd bolt rt 8in hdg b18.2.128
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LibertyILSquare Head BoltSteelPlain7/8-9 x 19square hd m/b10
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LibertyILSquare Head BoltSteelPlain7/8-9 x 1 3/4square m/b machine bolt141
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LibertyILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-9 x 5square m/b 18-8 s/s bolt 18-8 s/s2
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LibertyILSquare Head BoltGrade 5Plain7/8-9 x 3 1/2square m/b machine bolt18
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LibertyILSquare Head BoltSteelPlain7/8-9 x 7 1/2square m/b machine bolt19
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LibertyILSquare Head BoltSteelPlain7/8-9 x 2 1/4square m/b machine bolt70
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LibertyILSquare Head BoltSteelPlain7/8-9 x 12square hd mach bolt10
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LibertyILSquare Head BoltSteelPlain7/8-9 x 2 3/4square m/b machine bolt4
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ISSCOMOSquare Head BoltGrade 2Plain7/8-9 x 4 1/2935
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ISSCOMOSquare Head BoltGrade 2Plain7/8-9 x 5108
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ISSCOMOSquare Head BoltGrade 2Plain7/8-9 x 4819
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ISSCOMOSquare Head BoltGrade 2Plain7/8-9 x 740
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ISSCOMOSquare Head BoltGrade 2Plain7/8-9 x 3 1/4308
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XL ScrewGASquare Head BoltSteelPlain7/8-9 x 5 1/2square m/b std thrd fsb astm a30745
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ASMCILSquare Head BoltGrade AZinc/Clear7/8-9 x 3a307 gra square hd m/b low carb zp b18.2.136
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ASMCILSquare Head BoltGrade AZinc/Clear7/8-9 x 2 1/2a307 gra square hd m/b low carb zp37
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GLFOHSquare Head BoltGrade 5Plain7/8-9 x 2 1/2square hd bolt stl p ln120
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Kanebridge ILSquare Head BoltSteelPlain7/8-9 x 4 1/27/8-9x4 1/2 square machine bolt plain0.750
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Kanebridge ILSquare Head BoltSteelPlain7/8-9 x 47/8-9x4 square machine bolt plain0.750
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Kanebridge ILSquare Head BoltSteelPlain7/8-9 x 3 1/27/8-9x3 1/2 square machine bolt plain0.750
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Delta SecondaryILSquare Head BoltGrade 2Zinc/Clear7/8-9 x 13 1/2
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Delta SecondaryILSquare Head BoltSteelZinc/Clear7/8-9 x 13 1/220
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WurthINSquare Head BoltGrade 8Plain7/8-9 x 57/8-9 x 5 square hd t-bolt gr 844
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FMPMASquare Head BoltSteelPlain7/8-9 x 3square bolt85
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FMPMASquare Head BoltSteelPlain7/8-9 x 2 3/4square bolt2300
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FMPMASquare Head BoltSteelPlain7/8-9 x 4 1/2square bolt300
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FMPMASquare Head BoltSteelPlain7/8-9 x 3 3/4square bolt43
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FMPMASquare Head BoltSteelPlain7/8-9 x 4 3/4square bolt115
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FMPMASquare Head BoltSteelPlain7/8-9 x 5square bolt37
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FMPMASquare Head BoltSteelPlain7/8-9 x 5 1/2square bolt6
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FMPMASquare Head BoltSteelPlain7/8-9 x 5 1/4square bolt4
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Valley NuWASquare Head BoltSteelPlain7/8-9 x 8nc square bolt pl13
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Valley NuWASquare Head BoltSteelGalvanized7/8-9 x 3nc square bolt hdg80
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Valley NuWASquare Head BoltSteelPlain7/8-9 x 4nc square bolt pl30
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Valley NuWASquare Head BoltGrade 5Plain7/8-9 x 4nc gr5 square bolt pl9
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Valley NuWASquare Head BoltSteelPlain7/8-9 x 2 1/2nc square bolt pl35
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Valley NuWASquare Head BoltSteelGalvanized7/8 x 6 1/27/8 x 6 1/2 square hd bolt hdg 3nc 60deg semi-cone w/o nut M7064-3S2
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Alma BoltMISquare Head BoltGrade 2Plain7/8-9 x 2square bolt308
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Alma BoltMISquare Head BoltGrade 2Plain7/8-9 x 2 1/2square bolt503
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Alma BoltMISquare Head BoltGrade 2Plain7/8-9 x 3 3/4square bolt274
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Alma BoltMISquare Head BoltGrade 2Plain7/8-9 x 6square bolt338
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Alma BoltMISquare Head BoltGrade 2Plain7/8-9 x 4square bolt375
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 2 3/4square m/b300
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 7 1/2square m/b120
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 6square m/b148
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 3 3/4square m/b450
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 18square m/b25
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 10square m/b65
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 2 1/4square m/b200
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 4 1/2square m/b100
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 4 1/4square m/b100
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 1 3/4square m/b100
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 3 1/4square m/b200
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 5square m/b100
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 3square m/b150
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 5 1/2square m/b200
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 8square m/b50
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 6 1/2square m/b25
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