Drop Forged Anchor Shackles
* 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 Tons | Dimensions – Inches | EstimatedWeight Per100in lbs. | |||||||
| Inside | O.D. Eyes (D) | Pin or BoltDia. (E) | |||||||
| SizeDia. | Width @Eyes (A) | Tol. | Width @Bow (B) | Length(C) | Tol. | ||||
| 1/3 | 3/16″ | 3/8″ | 1/16″ | 9/16″ | 7/8″ | 1/16″ | 5/8″ | 1/4″ | 7 |
| 1/2 | 1/4″ | 15/32″ | 1/16″ | 3/4″ | 1-1/8″ | 1/16″ | 3/4″ | 5/16″ | 13.5 |
| 3/4 | 5/16″ | 17/32″ | 1/16″ | 15/16″ | 1-1/4″ | 1/16″ | 7/8″ | 3/8″ | 22 |
| 1 | 3/8″ | 21/32″ | 1/16″ | 1-1/8″ | 1-7/16″ | 1/8″ | 1″ | 7/16″ | 33 |
| 1-1/2 | 7/16″ | 23/32″ | 1/16″ | 1-5/16″ | 1-11/16″ | 1/8″ | 1-1/8″ | 1/2″ | 53.5 |
| 2 | 1/2″ | 13/16″ | 1/16″ | 1-1/2″ | 1-15/16″ | 1/8″ | 1-1/4″ | 5/8″ | 76.5 |
| 3-1/4 | 5/8″ | 1-1/16″ | 1/16″ | 1-7/8″ | 2-1/2″ | 1/8″ | 1-11/16″ | 3/4″ | 150.5 |
| 4-3/4 | 3/4″ | 1-1/4″ | 1/16″ | 2″ | 3″ | 1/4″ | 1-7/8″ | 7/8″ | 245.5 |
| 6-1/2 | 7/8″ | 1-7/16″ | 1/16″ | 2-5/8″ | 3-1/4″ | 1/4″ | 2-1/8″ | 1″ | 375 |
| 8-1/2 | 1″ | 1-11/16″ | 1/16″ | 2-3/4″ | 3-3/4″ | 1/4″ | 2-1/2″ | 1-1/8″ | 537.5 |
| 9-1/2 | 1-1/8″ | 1-13/16″ | 1/16″ | 2-15/16″ | 4-1/4″ | 1/4″ | 2-5/8″ | 1-1/4″ | 765 |
| 12 | 1-1/4″ | 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 |
| 17 | 1-1/2 | 2-3/8″ | 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
| Galvanized | Self-Colored | |
| Size | Part No. | Part No. |
| 3/16″ | 21105 5 | 21005 8 |
| 1/4″ | 21110 9 | 21010 2 |
| 5/16″ | 21115 4 | 21015 7 |
| 3/8″ | 21120 8 | 21020 1 |
| 7/16″ | 21125 3 | 21025 6 |
| 1/2″ | 21130 7 | 21030 0 |
| 5/8″ | 21135 2 | 21035 5 |
| 3/4″ | 21140 6 | 21040 9 |
| 7/8″ | 21145 1 | 21045 4 |
| 1″ | 20150 5 | 21050 8 |
| 1-1/8″ | 21155 0 | 21055 3 |
| 1-1/4″ | 21160 4 | 21060 7 |
| 1-3/8″ | 21165 9 | 21065 2 |
| 1-1/2″ | 21170 3 | 21070 6 |
Screw Pin
*Class 2
| Galvanized | Black Oxide | Self-Colored | |
| Size | Part No. | Part No. | Part No. |
| 3/16″ | 20105 6 | 20102 5 | 20005 9 |
| 1/4″ | 20110 0 | 20104 9 | 20010 3 |
| 5/16″ | 20115 5 | 20106 3 | 20015 8 |
| 3/8″ | 20120 9 | 20108 7 | 20020 2 |
| 7/16″ | 20125 4 | 20112 4 | 20025 7 |
| 1/2″ | 20130 8 | 20114 8 | 20030 1 |
| 5/8″ | 20135 3 | 20116 2 | 20035 6 |
| 3/4″ | 20140 7 | 20118 6 | 20040 0 |
| 7/8″ | 20145 2 | 20122 3 | 20045 5 |
| 1″ | 20150 6 | 20124 7 | 20050 9 |
| 1-1/8″ | 20155 1 | N .A . | 20055 4 |
| 1-1/4″ | 20160 5 | N .A . | 20060 8 |
| 1-3/8″ | 20165 0 | N .A . | 20065 3 |
| 1-1/2″ | 20170 4 | N .A . | 20070 7 |
Bolt, Nut and Cotter
*Class 3
| Galvanized | Black Oxide | Self-Colored | |
| Size | Part No. | Part No. | Part No. |
| 1/4″ | 20610 5 | 20136 0 | 20510 8 |
| 5/16″ | 20615 0 | 20138 4 | 20515 3 |
| 3/8″ | 20620 4 | 20142 1 | 20520 7 |
| 7/16″ | 20625 9 | 20144 5 | 20525 2 |
| 1/2″ | 20630 3 | 20146 9 | 20530 6 |
| 5/8″ | 20635 8 | 20148 3 | 20535 1 |
| 3/4″ | 20640 2 | 20152 0 | 20540 5 |
| 7/8″ | 20645 7 | 20154 4 | 20545 0 |
| 1″ | 20650 1 | 20156 8 | 20550 4 |
| 1-1/8″ | 20655 6 | N .A . | 20555 9 |
| 1-1/4″ | 20660 0 | N .A . | 20560 3 |
| 1-1/2″ | 20670 9 | N .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 | |||||||
| Inside | Pin or Bolt Dia. (D) |
Estimated Weight Per 100 in lbs. |
||||||
| Size Dia. |
Width (A) |
Tol. (+-) |
Length (B) |
Tol. (+-) |
O.D. Eyes (C) | |||
| 1/2 | 1/4″ | 3/8″ | 1/16″ | 7/8″ | 1/16″ | 3/4″ | 5/16″ | 11 |
| 3/4 | 5/16″ | 15/32″ | 1/16″ | 1 | 1/16″ | 7/8″ | 3/8″ | 20 |
| 1 | 3/8″ | 17/32″ | 1/16″ | 1-1/4″ | 1/16″ | 1″ | 7/16″ | 31.5 |
| 1-1/2 | 7/16″ | 21/32″ | 1/16″ | 1-1/2″ | 1/8″ | 1-1/8″ | 1/2″ | 45.5 |
| 2 | 1/2″ | 23/32″ | 1/16″ | 1-11/16″ | 1/8″ | 1-1/4″ | 5/8″ | 69.5 |
| 3-1/4 | 5/8″ | 13/16″ | 1/16″ | 2″ | 1/8″ | 1-5/8″ | 3/4″ | 132.5 |
| 4-3/4 | 3/4″ | 1-1/16″ | 1/16″ | 2-5/16″ | 1/4″ | 1-7/8″ | 7/8″ | 212 |
| 6-1/2 | 7/8″ | 1-1/4″ | 1/16″ | 2-7/8″ | 1/4″ | 2-1/8″ | 1″ | 320 |
| 8-1/2 | 1″ | 1-7/16″ | 1/16″ | 3-1/4″ | 1/4″ | 2-1/2″ | 1-1/8″ | 500 |
Round Pin and Cotter
*Class 1
| Galvanized | Self-Colored | |
| Size | Part No. | Part No. |
| 1/4″ | 21310 3 | 21210 6 |
| 5/16″ | 21315 8 | 21215 1 |
| 3/8″ | 21320 2 | 21220 5 |
| 7/16″ | 21325 7 | 21225 0 |
| 1/2″ | 21330 1 | 21230 4 |
| 5/8″ | 21335 6 | 21235 9 |
| 3/4″ | 21340 0 | 21240 3 |
| 7/8″ | 21345 5 | 21245 8 |
| 1″ | 21350 9 | 21250 2 |
Screw Pin
*Class 2
| Galvanized | Self-Colored | |
| Size | Part No. | Part No. |
| 1/4″ | 20310 4 | 20210 7 |
| 5/16″ | 20315 9 | 20215 2 |
| 3/8″ | 20320 3 | 20220 6 |
| 7/16″ | 20325 8 | 20225 1 |
| 1/2″ | 20330 2 | 20230 5 |
| 5/8″ | 20335 7 | 20235 0 |
| 3/4″ | 20340 1 | 20240 4 |
| 7/8″ | 20345 6 | 20245 9 |
| 1″ | 20350 0 | 20250 3 |
Bolt, Nut and Cotter
*Class 3
| Galvanized | Self-Colored | |
| Size | Part No. | Part No. |
| 1/4″ | 20810 9 | 20710 2 |
| 5/16″ | 20815 4 | 20715 7 |
| 3/8″ | 20820 8 | 20720 1 |
| 7/16″ | 20825 3 | 20725 6 |
| 1/2″ | 20830 7 | 20730 0 |
| 5/8″ | 20835 2 | 20735 5 |
| 3/4″ | 20840 6 | 20740 9 |
| 7/8″ | 20845 1 | 20745 4 |
| 1″ | 20850 5 | 20750 8 |
