Dia/Thread Size
Show All
Finish
Grade
Length
Show All
Material
Manufacturer
Specification
System of Measurement
Type
Special Interest

Square Head Bolts

The head design of square head bolts enables an easier wrench grip for nut tightening. They are usually used in new construction to mimic an older aesthetic or in railway applications.


Dia/Thread Size : 1/4"-20
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
3/4" Coarse Plain 20003 EA 0.42
1" Coarse Plain 20005 EA 0.30
1-1/4" Coarse Plain 20007 EA 0.43
1-1/2" Coarse Plain 20009 EA 0.54
2" Coarse Plain 20011 EA 0.74
2-1/2" Coarse Plain 20013 EA 0.65
2-3/4" Coarse Plain 20014 EA 0.04
3-1/2" Coarse Plain 20017 EA 0.06
Dia/Thread Size : 5/16"-18
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
5/8" Coarse Plain 20052 EA 0.02
3/4" Coarse Plain 20053 EA 0.36
1" Coarse Plain 20055 EA 0.38
1-1/4" Coarse Plain 20057 EA 0.56
1-1/2" Coarse Plain 20059 EA 0.56
1-3/4" Coarse Plain 20060 EA 0.85
2" Coarse Plain 20061 EA 0.58
2-1/2" Coarse Plain 20063 EA 0.89
3" Coarse Plain 20065 EA 1.16
3-1/2" Coarse Plain 20067 EA 1.34
Dia/Thread Size : 3/8"-16
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1-1/2" Coarse Plain 0168671 EA 1.77
Dia/Thread Size : 3/8"-16
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
3/4" Coarse Plain 20103 EA 0.47
1" Coarse Plain 20105 EA 0.60
1-1/4" Coarse Plain 20107 EA 0.65
1-1/2" Coarse Plain 20109 EA 0.59
2" Coarse Plain 20111 EA 0.76
2" Coarse Hot Dip Galvanized 0189596 EA 2.14
2-1/4" Coarse Plain 20112 EA 0.88
2-1/2" Coarse Plain 20113 EA 0.85
2-3/4" Coarse Plain 20114 EA 2.07
3" Coarse Plain 20115 EA 1.52
4" Coarse Plain 20119 EA 1.65
4-1/2" Coarse Plain 20121 EA 1.49
5" Coarse Plain 20123 EA 1.86
5-1/2" Coarse Plain 20124 EA 0.30
6" Coarse Plain 20125 EA 2.39
7-1/2" Coarse Plain 20128 EA 0.26
Dia/Thread Size : 7/16"-14
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1" Coarse Plain 20155 EA 0.74
1-1/4" Coarse Plain 20157 EA 2.22
2" Coarse Plain 20161 EA 1.61
2-3/4" Coarse Plain 20164 EA 2.09
Dia/Thread Size : 1/2"-13
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1" Coarse Plain 0168674 EA 3.65
1-1/4" Coarse Plain 0168675 EA 4.85
1-1/2" Coarse Plain 0168676 EA 5.94
1-3/4" Coarse Plain 0168677 EA 6.72
2" Coarse Plain 0168678 EA 7.68
2-1/4" Coarse Plain 0168679 EA 7.22
2-1/2" Coarse Plain 0168680 EA 9.99
2-1/2" Coarse Plain 0168893 PKG 3716.00
3" Coarse Plain 0168682 EA 9.97
3-1/2" Coarse Plain 0168683 EA 9.04
4" Coarse Plain 0168684 EA 16.34
4-1/2" Coarse Plain 0168685 EA 13.66
Dia/Thread Size : 1/2"-13
Material : Steel
Grade : 8
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1-1/2" Coarse Plain 0168921 EA 6.76
1-3/4" Coarse Plain 0168922 EA 4.13
2" Coarse Plain 0168923 EA 9.22
2-1/2" Coarse Plain 0168925 EA 7.28
3-1/2" Coarse Plain 0168928 EA 27.48
4" Coarse Plain 0168929 EA 11.11
Dia/Thread Size : 1/2"-13
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1" Coarse Plain 20205 EA 1.04
1-1/4" Coarse Plain 20207 EA 1.04
1-1/4" Coarse Hot Dip Galvanized 0189606 EA 2.62
1-1/2" Coarse Plain 20209 EA 1.16
1-1/2" Coarse Hot Dip Galvanized 0189607 EA 1.74
1-3/4" Coarse Plain 20210 EA 1.06
2" Coarse Plain 20211 EA 1.51
2" Coarse Hot Dip Galvanized 0189609 EA 1.95
2-1/4" Coarse Plain 20212 EA 1.63
2-1/2" Coarse Plain 20213 EA 2.18
2-3/4" Coarse Plain 20214 EA 2.24
3" Coarse Plain 20215 EA 2.08
3-1/4" Coarse Plain 20216 EA 2.41
3-1/2" Coarse Plain 20217 EA 2.44
4" Coarse Plain 20219 EA 2.86
4-1/2" Coarse Plain 20221 EA 4.64
5" Coarse Plain 20223 EA 3.40
5-1/2" Coarse Plain 20224 EA 5.12
6" Coarse Plain 20225 EA 4.60
6-1/2" Coarse Plain 20226 EA 3.92
7" Coarse Plain 20227 EA 5.33
8" Coarse Plain 20229 EA 6.52
9" Coarse Plain 20231 EA 6.30
10" Coarse Plain 20233 EA 8.87
12" Coarse Plain 20235 EA 2.93
13" Coarse Plain 20236 EA 0.79
Dia/Thread Size : 5/8"-11
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1-1/2" Coarse Plain 0168697 EA 8.47
2" Coarse Plain 0168699 EA 10.37
2" Coarse Plain 0168901 PKG 381.50
2-1/2" Coarse Plain 0168701 EA 11.13
2-3/4" Coarse Plain 0168702 EA 6.76
3" Coarse Plain 0168703 EA 14.26
3-1/2" Coarse Plain 0168704 EA 14.39
4" Coarse Plain 0168705 EA 10.74
4-1/2" Coarse Plain 0168707 EA 12.52
5" Coarse Plain 0168708 EA 10.27
8" Coarse Plain 0168714 EA 159.52
Dia/Thread Size : 5/8"-11
Material : Steel
Grade : 8
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1-1/2" Coarse Plain 0168942 EA 6.11
1-3/4" Coarse Plain 0168943 EA 5.55
2" Coarse Plain 0168944 EA 10.53
2-1/4" Coarse Plain 0168945 EA 11.90
2-1/2" Coarse Plain 0168946 EA 13.16
2-3/4" Coarse Plain 0168947 EA 12.36
3" Coarse Plain 0168948 EA 14.17
3-1/2" Coarse Plain 0168949 EA 14.20
4" Coarse Plain 0168950 EA 12.89
4-1/2" Coarse Plain 0168951 EA 34.19
5" Coarse Plain 0168952 EA 11.83
6" Coarse Plain 0168954 EA 14.91
8" Coarse Plain 0168958 EA 37.21
Dia/Thread Size : 5/8"-11
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
1" Coarse Plain 20305 EA 1.92
1-1/4" Coarse Plain 20307 EA 0.29
1-1/2" Coarse Plain 20309 EA 2.64
1-3/4" Coarse Plain 20310 EA 2.25
2-1/4" Coarse Plain 20312 EA 2.74
2-1/2" Coarse Plain 20313 EA 2.80
2-1/2" Coarse Hot Dip Galvanized 0189626 EA 6.56
2-3/4" Coarse Plain 20314 EA 2.78
3" Coarse Plain 20315 EA 3.06
3-1/4" Coarse Plain 20316 EA 4.11
3-1/2" Coarse Plain 20317 EA 4.19
3-3/4" Coarse Plain 20318 EA 7.87
4" Coarse Plain 20319 EA 4.26
4-1/2" Coarse Plain 20321 EA 4.40
5" Coarse Plain 20323 EA 4.92
5-1/2" Coarse Plain 20324 EA 5.51
6" Coarse Plain 20325 EA 6.15
6-1/2" Coarse Plain 20326 EA 7.05
7" Coarse Plain 20327 EA 10.45
7-1/2" Coarse Plain 20328 EA 7.82
8" Coarse Plain 20329 EA 7.24
10" Coarse Plain 20333 EA 1.51
Dia/Thread Size : 3/4"-10
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
2" Coarse Plain 0168731 EA 7.66
2-1/4" Coarse Plain 0168732 EA 9.06
2-1/2" Coarse Plain 0168733 EA 5.27
2-3/4" Coarse Plain 0168734 EA 10.30
3" Coarse Plain 0168735 EA 6.47
3-1/2" Coarse Plain 0168736 EA 11.10
4" Coarse Plain 0168737 EA 8.59
4-1/2" Coarse Plain 0168738 EA 16.28
5" Coarse Plain 0168739 EA 12.25
5-1/2" Coarse Plain 0168740 EA 13.85
6" Coarse Plain 0168741 EA 11.77
7" Coarse Plain 0168743 EA 14.34
7-1/2" Coarse Plain 0168744 EA 18.91
8" Coarse Plain 0168745 EA 67.29
10" Coarse Plain 0168749 EA 50.29
12" Coarse Plain 0168753 EA 77.04
15" Coarse Plain 0168759 EA 211.69
Dia/Thread Size : 3/4"-10
Material : Steel
Grade : 8
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
2-1/4" Coarse Plain 0168966 EA 9.14
2-1/2" Coarse Plain 0168967 EA 15.06
2-3/4" Coarse Plain 0168968 EA 20.89
3" Coarse Plain 0168969 EA 18.46
3-1/2" Coarse Plain 0168970 EA 19.21
4" Coarse Plain 0168971 EA 19.74
4-1/2" Coarse Plain 0168972 EA 21.01
5" Coarse Plain 0168973 EA 23.68
6" Coarse Plain 0168975 EA 37.61
6-1/2" Coarse Plain 0168976 EA 28.54
7" Coarse Plain 0168977 EA 25.62
8" Coarse Plain 0168979 EA 35.68
9" Coarse Plain 0168981 EA 94.40
9-1/2" Coarse Plain 0168982 EA 25.07
Dia/Thread Size : 3/4"-10
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
2" Coarse Plain 20361 EA 3.54
2-1/4" Coarse Plain 20362 EA 3.69
2-1/2" Coarse Plain 20363 EA 4.01
3" Coarse Plain 20365 EA 4.32
3-1/4" Coarse Plain 20366 EA 5.65
3-1/2" Coarse Plain 20367 EA 5.24
3-3/4" Coarse Plain 20368 EA 5.71
4-1/2" Coarse Plain 20371 EA 7.32
5" Coarse Plain 20373 EA 7.43
5-1/2" Coarse Plain 20374 EA 5.00
6" Coarse Plain 20375 EA 9.39
7" Coarse Plain 20377 EA 9.25
7-1/2" Coarse Plain 20378 EA 1.62
8" Coarse Plain 20379 EA 10.59
8-1/2" Coarse Plain 20380 EA 1.26
9" Coarse Plain 20381 EA 1.99
10" Coarse Plain 20383 EA 17.25
11" Coarse Plain 20385 EA 2.27
12" Coarse Plain 20386 EA 3.19
15" Coarse Plain 20389 EA 3.09
Dia/Thread Size : 7/8"-9
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
2-1/2" Coarse Plain 0168765 EA 11.78
2-3/4" Coarse Plain 0168766 EA 9.33
3" Coarse Plain 0168767 EA 12.39
3-1/2" Coarse Plain 0168768 EA 27.62
5" Coarse Plain 0168771 EA 29.37
5-1/2" Coarse Plain 0168772 EA 8.29
10" Coarse Plain 0168781 EA 67.63
Dia/Thread Size : 7/8"-9
Material : Steel
Grade : 8
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
3" Coarse Plain 0168990 EA 16.52
3-1/2" Coarse Plain 0168991 EA 14.93
4" Coarse Plain 0168992 EA 24.96
4-1/2" Coarse Plain 0168993 EA 21.91
5" Coarse Plain 0168994 EA 12.74
6" Coarse Plain 0168996 EA 24.30
10" Coarse Plain 0169004 EA 39.40
Dia/Thread Size : 7/8"-9
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
2-1/4" Coarse Plain 20412 EA 0.81
2-1/2" Coarse Plain 20413 EA 2.96
2-3/4" Coarse Plain 20414 EA 1.19
3" Coarse Plain 20415 EA 1.34
4" Coarse Plain 20419 EA 1.47
4-1/2" Coarse Plain 20421 EA 9.69
5" Coarse Plain 20423 EA 1.35
5-1/2" Coarse Plain 20424 EA 1.30
6" Coarse Plain 20425 EA 1.78
7" Coarse Plain 20427 EA 2.03
8" Coarse Plain 20429 EA 7.22
9" Coarse Plain 20431 EA 3.09
11" Coarse Plain 20435 EA 23.51
Dia/Thread Size : 1"-8
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
2-3/4" Coarse Plain 0168795 EA 11.39
3" Coarse Plain 0168796 EA 20.25
3-1/2" Coarse Plain 0168797 EA 38.44
4" Coarse Plain 0168798 EA 14.39
4-1/2" Coarse Plain 0168799 EA 19.32
5" Coarse Plain 0168800 EA 17.87
5-1/2" Coarse Plain 0168801 EA 19.47
6" Coarse Plain 0168802 EA 24.13
6-1/2" Coarse Plain 0168803 EA 22.22
7" Coarse Plain 0168804 EA 27.67
7-1/2" Coarse Plain 0168805 EA 28.46
8" Coarse Plain 0168806 EA 22.66
9" Coarse Plain 0168808 EA 30.33
10" Coarse Plain 0168810 EA 36.80
11" Coarse Plain 0168812 EA 35.64
12" Coarse Plain 0168814 EA 52.44
13" Coarse Plain 0168816 EA 71.54
15" Coarse Plain 0168820 EA 78.57
Dia/Thread Size : 1"-8
Material : Steel
Grade : 8
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
2-1/2" Coarse Plain 0169007 EA 20.01
3" Coarse Plain 0169009 EA 20.62
4" Coarse Plain 0169011 EA 34.06
4-1/2" Coarse Plain 0169012 EA 36.07
5" Coarse Plain 0169013 EA 41.13
5-1/2" Coarse Plain 0169014 EA 24.12
6" Coarse Plain 0169015 EA 36.02
6-1/2" Coarse Plain 0169016 EA 32.92
7-1/2" Coarse Plain 0169018 EA 41.25
8" Coarse Plain 0169019 EA 35.70
9" Coarse Plain 0169021 EA 49.28
10" Coarse Plain 0169023 EA 55.83
Dia/Thread Size : 1"-8
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
3" Coarse Plain 20465 EA 11.52
3-1/2" Coarse Plain 20467 EA 1.67
4" Coarse Plain 20469 EA 11.96
4-1/2" Coarse Plain 20471 EA 13.68
5" Coarse Plain 20473 EA 11.98
5-1/2" Coarse Plain 20474 EA 16.59
6" Coarse Plain 20475 PKG 139.00
6-1/2" Coarse Plain 20476 EA 3.09
7" Coarse Plain 20477 EA 18.44
7-1/2" Coarse Plain 20478 EA 2.99
8" Coarse Plain 20479 EA 2.89
9" Coarse Plain 20481 EA 23.93
10" Coarse Plain 20483 EA 29.67
11" Coarse Plain 20485 EA 27.98
12" Coarse Plain 20486 EA 35.11
13" Coarse Plain 20487 EA 12.99
14" Coarse Plain 20488 EA 39.00
15" Coarse Plain 20489 EA 6.69
18" Coarse Plain 20491 EA 7.79
Dia/Thread Size : 1-1/8"-7
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
4" Coarse Plain 0168827 EA 22.05
5" Coarse Plain 0168829 EA 18.27
6" Coarse Plain 0168831 PKG 249.80
8" Coarse Plain 0168835 EA 38.26
14" Coarse Plain 0168847 EA 69.68
15" Coarse Plain 0168849 PKG 85.90
Dia/Thread Size : 1-1/8"-7
Material : Steel
Grade : 8
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
5" Coarse Plain 0169032 EA 24.48
Dia/Thread Size : 1-1/4"-7
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
3-1/2" Coarse Plain 0168855 EA 34.44
4-1/2" Coarse Plain 0168857 EA 45.12
5" Coarse Plain 0168858 EA 65.09
5-1/2" Coarse Plain 0168859 EA 118.03
6" Coarse Plain 0168860 EA 39.64
6-1/2" Coarse Plain 0168861 EA 67.14
7" Coarse Plain 0168862 EA 80.75
8" Coarse Plain 0168864 EA 80.69
9" Coarse Plain 0168866 EA 45.44
9-1/2" Coarse Plain 0168867 EA 103.69
10" Coarse Plain 0168868 EA 61.24
12" Coarse Plain 0168872 EA 81.60
13" Coarse Plain 0168874 EA 90.18
14" Coarse Plain 0168876 EA 72.64
Dia/Thread Size : 1-1/4"-7
Material : Steel
Grade : 8
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
3" Coarse Plain 0169047 EA 49.37
3-1/2" Coarse Plain 0169048 EA 206.08
4-1/2" Coarse Plain 0169050 EA 79.48
5" Coarse Plain 0169051 EA 40.44
6" Coarse Plain 0169053 EA 59.18
7" Coarse Plain 0169055 EA 48.95
7-1/2" Coarse Plain 0169056 EA 101.62
8" Coarse Plain 0169057 EA 62.41
9" Coarse Plain 0169059 EA 56.83
10" Coarse Plain 0169061 EA 100.78
Dia/Thread Size : 1-1/4"-7
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
3" Coarse Plain 20565 EA 3.09
3-1/4" Coarse Plain 20566 EA 1.34
4" Coarse Plain 20569 EA 2.24
5" Coarse Plain 20573 EA 25.54
5-1/2" Coarse Plain 20574 EA 30.29
6" Coarse Plain 20575 EA 29.42
6-1/2" Coarse Plain 20576 EA 4.19
7-1/2" Coarse Plain 20578 EA 5.79
8" Coarse Plain 20579 EA 6.49
12" Coarse Plain 20586 EA 51.98
13" Coarse Plain 20587 EA 8.19
Dia/Thread Size : 1-1/2"-6
Material : Steel
Grade : 5
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
5" Coarse Plain 0168880 EA 71.87
6" Coarse Plain 0168881 EA 51.84
7" Coarse Plain 0168882 EA 125.79
9" Coarse Plain 0168884 EA 97.88
14" Coarse Plain 0168887 EA 107.79
Dia/Thread Size : 1-1/2"-6
Material : Steel
Grade : A
System of Measurement: Imperial (Inch)
System of Measurement: Imperial (Inch)
Length Thread Finish SKU Pkg Qty Price
Length Thread Finish SKU Pkg Qty Price
5" Coarse Plain 20623 EA 36.66
5-1/2" Coarse Plain 20624 EA 37.65
7" Coarse Plain 20627 EA 8.99
8" Coarse Plain 20629 EA 9.79