Drop Forged Anchor Shackles

Chicago Rigging Shackle

* Other sizes available. Call for pricing and information.
Size, working load limit, and trademark are permanently marked on all shackles. All shackles and pins are heat treated. Loads are based on a safety factor of 6 to 1, except (**_ which is 5 to 1. When tested all shackles are pulled at a uniform rate of speed in a direct tension.
Shackles Meet Performance Requirements of Federal Specifications RR-C-271D Type IVA*

Anchor – Round Pin – Screw Pin – Bolt Type Anchor
Working Load Limitin TonsDimensions – InchesEstimatedWeight Per100in lbs.
InsideO.D. Eyes (D)Pin or BoltDia. (E)
SizeDia.Width @Eyes (A)Tol.Width @Bow (B)Length(C)Tol.
1/33/16″3/8″1/16″9/16″7/8″1/16″5/8″1/4″7
1/21/4″15/32″1/16″3/4″1-1/8″1/16″3/4″5/16″13.5
3/45/16″17/32″1/16″15/16″1-1/4″1/16″7/8″3/8″22
13/8″21/32″1/16″1-1/8″1-7/16″1/8″1″7/16″33
1-1/27/16″23/32″1/16″1-5/16″1-11/16″1/8″1-1/8″1/2″53.5
21/2″13/16″1/16″1-1/2″1-15/16″1/8″1-1/4″5/8″76.5
3-1/45/8″1-1/16″1/16″1-7/8″2-1/2″1/8″1-11/16″3/4″150.5
4-3/43/4″1-1/4″1/16″2″3″1/4″1-7/8″7/8″245.5
6-1/27/8″1-7/16″1/16″2-5/8″3-1/4″1/4″2-1/8″1″375
8-1/21″1-11/16″1/16″2-3/4″3-3/4″1/4″2-1/2″1-1/8″537.5
9-1/21-1/8″1-13/16″1/16″2-15/16″4-1/4″1/4″2-5/8″1-1/4″765
121-1/4″2″1/16″3-1/4″4-1/2″1/4″3″1-3/8″1007.5
13 1/2**1-3/8″2-1/4″1/8″3-1/2″5-1/4″1/4″3-1/4″1-1/2″1232.5
171-1/22-3/8″1/8″3-3/4″5-3/4″1/4″3-1/2″1-5/8″1777.5

Warning: Any deviations such as angular lifts, shock loads, modification of the basic forging, etc., will result in drastically reduced working load limits.
All types of shackles are available in a self-colored or hot galvanized finish. When ordering specify the size, finish, and type of shackle. Other rust preventative coatings are available on a special basis.
Bolt type anchor shackles are of the same specifications as the regular types except for the bolt, nut and cotter.

Round Pin and Cotter

*Class 1
GalvanizedSelf-Colored
SizePart No.Part No.
3/16″21105 521005 8
1/4″21110 921010 2
5/16″21115 421015 7
3/8″21120 821020 1
7/16″21125 321025 6
1/2″21130 721030 0
5/8″21135 221035 5
3/4″21140 621040 9
7/8″21145 121045 4
1″20150 521050 8
1-1/8″21155 021055 3
1-1/4″21160 421060 7
1-3/8″21165 921065 2
1-1/2″21170 321070 6

Screw Pin

*Class 2
GalvanizedBlack OxideSelf-Colored
SizePart No.Part No.Part No.
3/16″20105 620102 520005 9
1/4″20110 020104 920010 3
5/16″20115 520106 320015 8
3/8″20120 920108 720020 2
7/16″20125 420112 420025 7
1/2″20130 820114 820030 1
5/8″20135 320116 220035 6
3/4″20140 720118 620040 0
7/8″20145 220122 320045 5
1″20150 620124 720050 9
1-1/8″20155 1N .A .20055 4
1-1/4″20160 5N .A .20060 8
1-3/8″20165 0N .A .20065 3
1-1/2″20170 4N .A .20070 7

Bolt, Nut and Cotter

*Class 3
GalvanizedBlack OxideSelf-Colored
SizePart No.Part No.Part No.
1/4″20610 520136 020510 8
5/16″20615 020138 420515 3
3/8″20620 420142 120520 7
7/16″20625 920144 520525 2
1/2″20630 320146 920530 6
5/8″20635 820148 320535 1
3/4″20640 220152 020540 5
7/8″20645 720154 420545 0
1″20650 120156 820550 4
1-1/8″20655 6N .A .20555 9
1-1/4″20660 0N .A .20560 3
1-1/2″20670 9N .A .20570 2

Drop Forged Chain Shackles

Round Pin
Screw Pin
Bolt Type
Anchor
Chain- Round Pin – Screw Pin – Bolt Type Anchor
Working Load Limit
in Tons
Dimensions – Inches
InsidePin or
Bolt Dia. (D)
Estimated
Weight Per
100
in lbs.
Size
Dia.
Width
(A)
Tol.
(+-)
Length
(B)
Tol.
(+-)
O.D. Eyes (C)
1/21/4″3/8″1/16″7/8″1/16″3/4″5/16″11
3/45/16″15/32″1/16″11/16″7/8″3/8″20
13/8″17/32″1/16″1-1/4″1/16″1″7/16″31.5
1-1/27/16″21/32″1/16″1-1/2″1/8″1-1/8″1/2″45.5
21/2″23/32″1/16″1-11/16″1/8″1-1/4″5/8″69.5
3-1/45/8″13/16″1/16″2″1/8″1-5/8″3/4″132.5
4-3/43/4″1-1/16″1/16″2-5/16″1/4″1-7/8″7/8″212
6-1/27/8″1-1/4″1/16″2-7/8″1/4″2-1/8″1″320
8-1/21″1-7/16″1/16″3-1/4″1/4″2-1/2″1-1/8″500

Round Pin and Cotter

*Class 1
GalvanizedSelf-Colored
SizePart No.Part No.
1/4″21310 321210 6
5/16″21315 821215 1
3/8″21320 221220 5
7/16″21325 721225 0
1/2″21330 121230 4
5/8″21335 621235 9
3/4″21340 021240 3
7/8″21345 521245 8
1″21350 921250 2

Screw Pin

*Class 2
GalvanizedSelf-Colored
SizePart No.Part No.
1/4″20310 420210 7
5/16″20315 920215 2
3/8″20320 320220 6
7/16″20325 820225 1
1/2″20330 220230 5
5/8″20335 720235 0
3/4″20340 120240 4
7/8″20345 620245 9
1″20350 020250 3

Bolt, Nut and Cotter

*Class 3
GalvanizedSelf-Colored
SizePart No.Part No.
1/4″20810 920710 2
5/16″20815 420715 7
3/8″20820 820720 1
7/16″20825 320725 6
1/2″20830 720730 0
5/8″20835 220735 5
3/4″20840 620740 9
7/8″20845 120745 4
1″20850 520750 8
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