CLGR® Stainless Steel Chain Shackle Oversized Screw Pin also known as Chain shackle with oversized screw pin, US Federal Spec shackle, Oversized screw pin shackle, Dee shackle oversized pin and Electrophoretic coating 316 stainless steel chain shackle with oversized screw pin for marine rigging.
Certified to meet U.S. Federal Specification RR-C-271F Type IVA, Grade A, Class 2 (G-210), the rated stainless steel shackles feature an oversized screw pin design for secure temporary or repeated connections in demanding applications.
Crafted from premium AISI 304/316 stainless steel through free forging, the rated stainless steel shackles offer superior corrosion resistance and durability even in harsh conditions.
The rated stainless steel shackles' D-shape design is engineered for straight-line applications, while its oversized screw pin with key hole enables quick tightening and loosening.
Finished with high polishing or electrophoretic coating, the rated stainless steel shackles provide exceptional protection in marine, industrial, and rigging environments.
Each unit of the rated stainless steel shackles is clearly marked with imperial size specifications and permanent Working Load Limit indicators.
| Brand | CLGR® |
| Origin | China |
| Technical Notes | D shackle conform to U.S. Federal Specification |
| Material | Stainless Steel AISI 304/316 D Shackle |
| Processing | Free Forging |
| Finish | Highly polished finish |
| Size | 3/16”, 1/4”, 5/16”, 3/8”, 7/16”, 1/2”, 5/8”, 3/4”, 7/8”, 1”, 1-1/8”, 1-1/4”, 1-1/2” |

Part No. | D | d | a | C | Min.BL |
in | KN | ||||
CR-SS-210-S-3/16 | 3/16 | 1/4 | 0.38 | 0.71 | 13.7 |
CR-SS-210-S-1/4 | 1/4 | 5/16 | 0.47 | 0.88 | 24.4 |
CR-SS-210-S-5/16 | 5/16 | 3/8 | 0.53 | 1.03 | 38.2 |
CR-SS-210-S-3/8 | 3/8 | 7/16 | 0.66 | 1.25 | 54.9 |
CR-SS-210-S-7/16 | 7/16 | 1/2 | 0.75 | 1.44 | 54.9 |
CR-SS-210-S-1/2 | 1/2 | 5/8 | 0.81 | 1.63 | 97.7 |
CR-SS-210-S-5/8 | 5/8 | 3/4 | 1.06 | 2 | 152.6 |
CR-SS-210-S-3/4 | 3/4 | 7/8 | 1.25 | 2.38 | 184.7 |
CR-SS-210-S-7/8 | 7/8 | 1 | 1.44 | 2.81 | 219.7 |
CR-SS-210-S-1/1 | 1 | 1-1/8 | 1.69 | 3.19 | 278.1 |
CR-SS-210-S-1-1/8 | 1-1/8 | 1-1/4 | 1.81 | 3.58 | 390.7 |
CR-SS-210-S-1-1/4 | 1-1/4 | 1-1/2 | 2.03 | 3.94 | 494.4 |
CR-SS-210-S-1-1/2 | 1-1/2 | 1-5/8 | 2.38 | 4.81 | 672.9 |
WARNING: Remember to always tighten the shackle pin, to avoid accidental bending.