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 .

3,394 Square Head Bolt, showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Zoro Tools Inc.Square Head BoltSteelPlain2-4 1/22-4-1/2 carbon steel square bolt die
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Zoro Tools Inc.Square Head BoltSteelPlain1 1/4-71-1/4-7 carbon steel square bolt die
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Zoro Tools Inc.Square Head BoltSteelPlain5/8-115/8-11 carbon steel square bolt die
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Zoro Tools Inc.Square Head BoltSilicon BronzePlain22 bronze sq hd pl no lead
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buy Square Head Bolts from one of our FCH Network Members
AmeriNYSquare Head BoltGrade 5Plain5/16-24 x 15/16-24 x 1 square bolt grade 52220
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AmeriNYSquare Head BoltGrade 5Plain5/16-24 x 15/16-24 x 1 square bolt grade 5 plain672
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AmeriNYSquare Head BoltSteelZinc/Clear3/8-16 x 6square m/b zp44
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AmeriNYSquare Head BoltSteelPlain5/6-18 x 5 1/2square bolt250
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AmeriNYSquare Head BoltSteelPlain1/4-20 x 5/8square m/b100
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AmeriNYSquare Head BoltSteelPlain5/16-18 x 2 1/2square m/b50
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AmeriNYSquare Head BoltSteelCadmium5/16-18 x 3square bolt700
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AmeriNYSquare Head BoltSteelPlain5/16-18 x 4square bolt2450
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AmeriNYSquare Head BoltSteelPlain5/16-18 x 5square bolt900
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AmeriNYSquare Head BoltSteelBlack Oxide1/4-20 x 3/4square m/b black ox5150
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AmeriNYSquare Head BoltSteelBlack Oxide3/8-16 x 2square hd m/b black ox2380
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AmeriNYSquare Head BoltSteelZinc/Clear3/8-16 x 2 1/4square hd m/b pl500
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AmeriNYSquare Head BoltSteelZinc/Yellow3/8-16 x 2 1/2square hd m/b zy1000
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AmeriNYSquare Head BoltSteelPlain3/8-16 x 4 1/2square m/b50
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AmeriNYSquare Head BoltSteelBlack Oxide3/8-16 x 4 1/2square hd m/b black ox10
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AmeriNYSquare Head BoltSteelPlain1/4-20 x 1 1/4square m/b10000
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HayesCASquare Head BoltGrade 8Plain1 1/4-7 x 101 1/4-7 x 10 square hd bolt gr 8 pln1
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HayesCASquare Head BoltGrade 2Plain1/2-13 x 2 1/41/2-13 x 2 1/4 square hd bolt gr.2 pln with sq nut18
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HayesCASquare Head BoltGrade 8Plain5/8-11 x 25/8-11 x 2 square hd bolt gr 8 pln4
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HayesCASquare Head BoltSteelGalvanized1-8 x 18square hd bolt hdg8
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HayesCASquare Head BoltSteelZinc/Clear1-8 x 2square hd bolt58
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HayesCASquare Head BoltSteelGalvanized1-8 x 28square hd bolt hdg1
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HayesCASquare Head BoltGrade 8Plain1-8 x 3 1/2square hd bolt16
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HayesCASquare Head BoltSteelPlain1-8 x 5 1/2square hd bolt8
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HayesCASquare Head BoltGrade 5Plain1 1/4-7 x 12square hd bolt1
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HayesCASquare Head BoltSteelPlain1 1/4-7 x 6 1/2square hd bolt20
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HayesCASquare Head BoltSteelPlain1 1/2-6 x 11 3/8square hd bolt4
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HayesCASquare Head BoltSteelPlain1 3/4-5 x 16square hd bolt2
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HayesCASquare Head BoltGrade 5Plain1 3/4-5 x 18square hd bolt4
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HayesCASquare Head BoltSteelPlain2 1/4-4 1/2 x 8 1/2square hd bolt2
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HayesCASquare Head BoltSteelPlain1/4-20 x 1 3/4square hd bolt49
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HayesCASquare Head BoltSteelPlain1/4-20 x 2square hd bolt76
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Set ScrewILSquare Head BoltSteelPlain1/2-13 x 1square knurled cup point heat treat r/c-45 per printinquire
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Set ScrewILSquare Head BoltGrade 8Plain1 1/8-7 x 15.0square boltinquire
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YANKEENHSquare Head BoltSteelPlain5/16-18 x 35/16-18 x 3 square hd bolt136
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YANKEENHSquare Head BoltSteelPlain5/16-18 x 1 3/45/16-18 x 1-3/4 square head bolt342
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YANKEENHSquare Head BoltSteelPlain5/16-18 x 25/16-18 x 2 square hd bolt192
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YANKEENHSquare Head BoltSteelPlain3/8-16 x 1 1/23/8-16 x 1 1/2 square hd bolt50
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YANKEENHSquare Head BoltSteelPlain3/8-16 x 43/8-16 x 4 square hd bolt364
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YANKEENHSquare Head BoltGrade APlain1/2-13 x 1 1/21/2-13 x 1-1/2 square head bolt astm a307106
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YANKEENHSquare Head BoltGrade 5Plain1/2-13 x 1 1/21/2-13 x 1-1/2 square head bolt grade 5 plain finish53
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YANKEENHSquare Head BoltSteelPlain1/2-13 x 21/2-13 x 2 square hd bolt2
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YANKEENHSquare Head BoltGrade APlain1/2-13 x 2 1/21/2-13 x 2-1/2 square head bolt astm a307292
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YANKEENHSquare Head BoltSteelPlain1/2-13 x 3 1/21/2-13 x 3 1/2 square hd bolt120
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YANKEENHSquare Head BoltSteelPlain1/2-13 x 51/2-13 x 5 square hd bolt11
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YANKEENHSquare Head BoltSteelPlain5/8-11 x 25/8-11 x 2 square hd bolt19
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YANKEENHSquare Head BoltSteelPlain5/8-11 x 2 1/25/8-11 x 2 1/2 square hd bolt7
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YANKEENHSquare Head BoltSteelPlain5/8-11 x 45/8-11 x 4 square hd bolt26
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YANKEENHSquare Head BoltSteelPlain5/8-11 x 75/8-11 x 7 square hd bolt38
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YANKEENHSquare Head BoltSteelPlain3/4-10 x 2 1/43/4-10 x 2 1/4 square hd bolt70
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SIIINSquare Head BoltSteelPlain5/8-11 x 4 1/25/8-11 x 4-1/2 square head bolt)12
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JET FITTINGCASquare Head BoltSteelBlack Oxide5/16-18 x 3/4bolt square 5/16-18x3/4 steel black oxide and wax b18.2.12000
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ACCURATEILSquare Head BoltSteelPlain1/2-13 x 13bolt square machine200
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ACCURATEILSquare Head BoltGrade 5Zinc/Clear5/8-11 x 3 1/4bolt square machine gr510
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ACCURATEILSquare Head BoltSteelPlain1-8 x 5bolt square machine30
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ACCURATEILSquare Head BoltSteelPlain1/4-20 x 2 1/2bolt square machine black400
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ACCURATEILSquare Head BoltSteelPlain1/4-20 x 3 1/4bolt square machine200
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ACCURATEILSquare Head BoltSteelZinc/Clear1/4-20 x 3 1/4bolt square machine1500
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ACCURATEILSquare Head BoltSteelZinc/Clear5/16-18 x 1bolt square machine200
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ACCURATEILSquare Head BoltSteelZinc/Clear3/8-16 x 2 1/4bolt square machine f/t952
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ACCURATEILSquare Head BoltSteelZinc/Clear3/8-16 x 5 1/2bolt square machine1100
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ACCURATEILSquare Head BoltSteelZinc/Clear7/16-14 x 4 3/4bolt square machine170
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ACCURATEILSquare Head BoltSteelPlain1/2-13 x 1 3/4bolt square machine600
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ACCURATEILSquare Head BoltSteelPlain5/8-11 x 8 1/2bolt square machine50
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ACCURATEILSquare Head BoltSteelPlain5/8-11 x 1 1/4bolt square machine540
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ACCURATEILSquare Head BoltSteelZinc/Clear5/8-11 x 1 1/4bolt square machine215
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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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RCFastAZSquare Head BoltGrade 5Plain3/8-16 x 1/2per print (bolt, sq hd, gr5, l.h., smoothface, )inquire
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AbabaCASquare Head BoltSteelZinc/Clear5/8-11 x 25/8-11 x 2 sq hd blt steel znc b18.2.16
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AbabaCASquare Head BoltSteelZinc/Clear5/8-11 x 2 1/25/8-11 x 2 1/2 sq hd blt steel znc b18.2.16
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AbabaCASquare Head BoltSteelPlain1/4-20 x 1 1/21/4-20 x 1 1/2 sq hd blt steel pln b18.2.1200
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AbabaCASquare Head BoltSteelPlain1/4-20 x 21/4-20 x 2 sq hd blt full thrd steel pln b18.2.12190
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AbabaCASquare Head BoltSteelZinc/Clear1/4-20 x 21/4-20 x 2 sq hd blt full thrd steel znc b18.2.1200
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JacksonMSSquare Head BoltGrade 2Galvanized1/2-13 x 1 1/2square bolt hdg18
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JacksonMSSquare Head BoltGrade 2Plain1/4 x 1square bolt gr. 271
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JacksonMSSquare Head BoltGrade 2Plain3/8-16 x 3square bolt gr. 246
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JacksonMSSquare Head BoltGrade 2Plain1/2-13 x 1 1/4square bolt gr. 2400
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JacksonMSSquare Head BoltGrade 2Plain1/2-13 x 4 1/2square bolt gr. 21
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JacksonMSSquare Head BoltGrade 2Plain5/8-11 x 5square bolt gr. 23
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JacksonMSSquare Head BoltGrade 2Plain3/4-10 x 3 1/2square bolt gr. 22
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JacksonMSSquare Head BoltGrade 2Plain1 1/8 x 4nc square bolt gr. 278
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JacksonMSSquare Head BoltGrade 2Zinc/Clear1/4-20 x 2nc square bolt gr. 288
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JacksonMSSquare Head BoltGrade 2Zinc/Clear5/16 x 1nc square bolt gr. 2107
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JacksonMSSquare Head BoltGrade 2Zinc/Clear5/16 x 1 1/2nc square bolt gr. 27
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JacksonMSSquare Head BoltGrade 2Zinc/Clear3/8 x 1 1/2nc square bolt gr. 22
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JacksonMSSquare Head BoltGrade 5Plain1/2-13 x 3 1/2square6
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JacksonMSSquare Head BoltGrade 5Plain1/2-13 x 4nc square bolt gr. 5 fastenel # 0168684 or equal167
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JacksonMSSquare Head BoltGrade 5Plain5/8-11 x 4 1/2nc square bolt gr. 5 f/t3
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JacksonMSSquare Head BoltGrade 5Plain3/4-10 x 4 1/2square25
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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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CNBILSquare Head BoltGrade 2Plain1/4-20 x 1 1/2square m/b400
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CNBILSquare Head BoltGrade 2Zinc/Clear1/4-20 x 1 1/2square m/b200
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CIFILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 2 1/25/8-11 x 2 1/2 square head machine bolt 310 stainless steel119
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CIFILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 2 3/45/8-11 x 2 3/4 square head machine bolt 310 stainless steel97
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CIFILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1 1/2-6 x 91 1/2-6 x 9 square head machine bolt 310 stainless steel3
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CIFILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 3 1/4square m/b, 18-8 s/s5
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