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Square Head Bolts, Grade 8

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 .

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

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
JacksonMSSquare Head BoltGrade 8Plain5/8-11 x 2 1/2square bolt gr. 81
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JacksonMSSquare Head BoltGrade 8Plain5/8-11 x 4 1/25/8-11x4-1/2 square bolt gr. 81
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JacksonMSSquare Head BoltGrade 8Plain3/4-10 x 3 1/2square bolt gr. 82
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JacksonMSSquare Head BoltGrade 8Plain1 1/4 x 6square bolt gr. 810
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JacksonMSSquare Head BoltGrade 8Plain1 1/4 x 12 square head bolt gr. 8 plain4
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JacksonMSSquare Head BoltGrade 8Plain5/8-11 x 35/8-11 x 3 square head bolt gr. 8 plain19
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JacksonMSSquare Head BoltGrade 8Plain3/4-10 x 8square bolt gr. 81
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JacksonMSSquare Head BoltGrade 8Plain7/8-9 x 3square m/b finish j4293
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JacksonMSSquare Head BoltGrade 8Plain1 3/8-6 x 6 1/2nc square bolt gr. 86
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JacksonMSSquare Head BoltGrade 8Plain1 1/4 x 5square bolt gr. 8120
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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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GLFOHSquare Head BoltGrade 8Plain3/4-10 x 33/4-10x3 square hd bolt grade 8 stl pln b18.2.1 () ()5
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AbabaCASquare Head BoltGrade 8Plain3/4-10 x 2 1/23/4-10 x 2-1/2 square head bolt gr.8 plain b18.2.130
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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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ManscoMISquare Head BoltGrade 8Plain3/8-16 x 13/8-16x1 square hd machine bolt gr8 pln 100/box350
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ManscoMISquare Head BoltGrade 8Plain1/2-13 x 4square hd m/b gr8 25/box26
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LibertyILSquare Head BoltGrade 8Zinc/Yellow3/4-10 x 5 1/4square m/b .0002 .000216
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MidStatesMISquare Head BoltGrade 8Plain3/4-10 x 15square hd bolt9
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MidStatesMISquare Head BoltGrade 8Plain7/8-9 x 8in square hd bolt10
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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 16square hd bolt5
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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 20square hd bolt19
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MidStatesMISquare Head BoltGrade 8Plain1/2-13 x 81/2-13 x 8in square hd bolt gr 8 pln42
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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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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 61 1/4-7 x 6in square hd bolt gr 8 pln3
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MidStatesMISquare Head BoltGrade 8Plain5/8-11 x 65/8-11 x 6in square hd bolt gr 8 pln3
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MidStatesMISquare Head BoltGrade 8Plain3/4-10 x 133/4-10 x 13 square hd bolt gr 8 pln2
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MidStatesMISquare Head BoltGrade 8Plain1/2-13 x 4 1/21/2-13 x 4 1/2 square hd bolt gr 8 pln1
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MidStatesMISquare Head BoltGrade 8Plain1 1/2-6 x 8 1/2square hd bolt9
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MidStatesMISquare Head BoltGrade 8Plain1/2-13 x 7 1/2square hd bolt8
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MidStatesMISquare Head BoltGrade 8Plain1 1/4-7 x 11square hd bolt1
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WDMBIASquare Head BoltGrade 8Plain3/4-16 x 4 x 11 1/2bolt u sqr gr8.1 po 3/4-16x4x11 1/2 spc (W0B0) (W0B0) (W0B0)141
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United StILSquare Head BoltGrade 8Plain1 3/8-6 x 26 1/2square head rolled threadinquire
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HBBOLTCASquare Head BoltGrade 8Plain1 1/4-7 x 14square hd bolt w/6 thrd7
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CIFILSquare Head BoltGrade 8Black Oxide5/8-11 x 1 1/25/8-11x1 1/2 square head machine bolt grade 8 black oxide with wkw headmark (5859) (5859)5859
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BIG BOLTILSquare Head BoltGrade 8Zinc/Yellow3/4-10 x 5bolt & c/s square boltfulthr b18.2.1500
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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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BIG BOLTILSquare Head BoltGrade 8Plain3/8-16 x 10bolt & c/s square boltsquare b18.2.1500
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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 8Plain3/4-10 x 8bolt & c/s square boltsquare b18.2.1800
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BIG BOLTILSquare Head BoltGrade 8Plain7/16-14 x 5bolt & c/s square boltsquare b18.2.12500
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BIG BOLTILSquare Head BoltGrade 8Plain7/16-14 x 3 1/2bolt & c/s square boltsquare b18.2.11000
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BIG BOLTILSquare Head BoltGrade 8Plain1 3/4-5 x 10bolt & c/s square boltsquare b18.2.1280
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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 8Plain3/4-16 x 6 1/2bolt & c/s square boltb18.2.11187
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BIG BOLTILSquare Head BoltGrade 8Plain5/8-11 x 14bolt & c/s square boltsquare b18.2.11000
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BIG BOLTILSquare Head BoltGrade 8Plain3/4-10 x 4bolt & c/s square boltsquare b18.2.1600
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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 8Plain3/4-10 x 2 3/4bolt & c/s square boltsquare b18.2.1800
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BIG BOLTILSquare Head BoltGrade 8Zinc/Yellow3/4-16 x 4bolt & c/s square boltfulthr b18.2.1500
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BIG BOLTILSquare Head BoltGrade 8Plain5/8-11 x 6bolt & c/s square boltsquare b18.2.1200
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BIG BOLTILSquare Head BoltGrade 8Plain7/16-14 x 4bolt & c/s square boltsquare b18.2.11000
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BIG BOLTILSquare Head BoltGrade 8Plain5/8-11 x 8bolt & c/s square boltsquare b18.2.1400
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BIG BOLTILSquare Head BoltGrade 8Plain7/16-20 x 3bolt & c/s square boltsquare b18.2.1500
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BIG BOLTILSquare Head BoltGrade 8Plain1-8 x 16bolt & c/s square boltsquare b18.2.1150
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ISSCOMOSquare Head BoltGrade 8Plain1-14 x 4 1/252
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ISSCOMOSquare Head BoltGrade 8Plain1-14 x 621
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MastBoltOHSquare Head BoltGrade 8Plain1 x 41 x 4 square head switch bolt gr.8 with 2-1/4 thread45 pcs
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MastBoltOHSquare Head BoltGrade 8Plain1 x 41 x 4 square head switch bolt gr.8 with 2-1/4 thread45
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United StILSquare Head BoltGrade 8Plain1-8 x 4 1/4 x 3 7/8square head 392
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United StILSquare Head BoltGrade 8Plain1 3/8-6 x 16 1/2square head rolled thread62
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B & K FASTPASquare Head BoltGrade 8Zinc/Yellow7/16-20 x 57/16-20 x 5 square bolts gr 8 z yellow b18.2.124
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B & K FASTPASquare Head BoltGrade 8Plain1-8 x 3 1/21-8 x 3 1/2 square bolts gr 8 plain b18.2.12
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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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B & K FASTPASquare Head BoltGrade 8Plain1 1/2-12 x 8 1 1/2-12 x 8 square bolts gr 8 plain b18.2.11
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B & K FASTPASquare Head BoltGrade 8Plain5/8-11 x 5 1/25/8-11 x 5 1/2 square bolts gr 8 plain b18.2.17
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General FMISquare Head BoltGrade 8Plain5/8-18 x 2 1/45/8-18x2.25 square hd stop bolt gr8 b18.2.124,272
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BHAMALSquare Head BoltGrade 8Plain1-8 x 4square hd m/b12
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BHAMALSquare Head BoltGrade 8Plain3/4-10 x 6square hd mach bolt6
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Bostwick INSquare Head BoltGrade 8Plain1-14 x 51-14 x 5 square head bolt grade 8 b18.2.130
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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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Bostwick INSquare Head BoltGrade 8Plain1-14 x 4 1/21-14 x 4-1/2 square head bolt grade 8 b18.2.112
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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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FastWareSaskSquare Head BoltGrade 8Zinc/Yellow3/4-10 x 4nc square m/b 1 3/4 tl1,155
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FastWareSaskSquare Head BoltGrade 8Zinc/Yellow1-8 x 8nc square m/b39
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SRFALSquare Head BoltGrade 8Plain1-8 x 7square hd bolt4
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SRFALSquare Head BoltGrade 8Plain5/8-11 x 4square hd bolt-
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SRFALSquare Head BoltGrade 8Plain7/8-9 x 7square hd bolt3
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THRDFASTALSquare Head BoltGrade 8Plain3/4nf-16x3 1/2 gr8 square hd bolt b18.2.1400
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KBSTNSquare Head BoltGrade 8Plain1-8 x 181-8 x 18 square mach bolt gr-8 b18.2.128
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KBSTNSquare Head BoltGrade 8Plain1-8 x 51-8 x 5 square mach bolt gr-8 b18.2.152
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KBSTNSquare Head BoltGrade 8Plain1-8 x 151-8 x 15 square!machbolt gr-8 b18.2.12
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KBSTNSquare Head BoltGrade 8Plain1-8 x 3 1/21-8 x 3 1/2 square mach bolt gr-8 b18.2.120
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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 1/8-7 x 101-1/8-7 x 10 inch square mach bolt gr-8 b18.2.14
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KBSTNSquare Head BoltGrade 8Plain1-8 x 6 1/21-8 x 6 1/2 square!machbolt gr-8 b18.2.155
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KBSTNSquare Head BoltGrade 8Plain1-8 x 6 3/41-8 x 6 3/4 square mach bolt gr-8 b18.2.110
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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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KBSTNSquare Head BoltGrade 8Plain1-8 x 81-8 x 8 square!machbolt gr-8 b18.2.152
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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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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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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 8Plain1 1/4-7 x 161-1/4-7 x 16 square!machbolt gr-8 b18.2.123
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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 1/4-7 x 5 1/21-1/4-7 x 5 1/2 square!machbolt gr-8 b18.2.150
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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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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 BoltGrade 8Plain1 1/2-6 x 61-1/2-6 x 6 square mach bolt gr-8 b18.2.131
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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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THRDFASTFLSquare Head BoltGrade 8Plain5/8-11 x 9 3/4gr8 square hd bolt b18.2.11
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THRDFASTFLSquare Head BoltGrade 8Plain3/4-10 x 4gr8 square hd bolt b18.2.117
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WSBKYSquare Head BoltGrade 8Zinc/Clear3/4-10 x 2 1/4blt sqr gr8 (zt) 3/4-10x2 1/4 b18.2.1199
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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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Valley NuWASquare Head BoltGrade 8Plain1-8 x 4 1/2nc gr8 square hd bolt10
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