CLGR® High Tensile Bow Shackle with Square Sunken Head Pin, also known as Anchor Shackle Square Sunken Head Pin, Shackles Square Sunken Hole Bow Type and Square Sunken Hole Bow Shackle.
Certified to U.S. Federal Specification, this high-tensile bow shackle is engineered for heavy-duty marine and trawling applications. Forged from 45# steel with an alloy steel square sunken hole pin, it undergoes quenching and tempering for superior strength and durability, achieving a 6:1 safety factor for reliable performance under extreme loads.
The shackle is available in self-colored, zinc-plated, or hot-dip galvanized finishes, providing excellent corrosion resistance for harsh marine environments. Its unique square sunken hole pin design ensures secure connections while preventing rope snagging and tangling during trawl operations.
Ideal for offshore fishing, marine rigging, and commercial trawling applications, this bow shackle is offered in sizes from 7/16" to 1-3/8". Custom specifications and identification marks can be provided to meet specialized project requirements.
| Brand | CLGR® |
| Size | 7/16”,1/2”,5/8”,3/4”,7/8”,1”,1-1/8”,1-1/4“,1-3/8” |
Shackle Shape | Bow Shackle |
Pin | Square Sunken Hole Pin |
| Standard | U.S. Federal Specification |
| Safety Factor | 6:1 |
| Material | Body: Superior Carbon Steel Screw Pin: Alloy Steel |
| Surface Finish | Self-colored / Zinc plated, Hot dipped galvanized |
| Processing | Drop Forged, Heat Treatment |
| Important Note | Not suitable for lifting applications |

| Part No. | Size | WILL | A mm | B mm | C mm | D mm | E mm | Weight kg |
| CR-BS-Sunken716 | 7/6'' | 1.5 | 18.5 | 11 | 43 | 12 | 29 | 0.25 |
| CR-BS-Sunken12 | 1/2" | 2 | 22 | 13.5 | 51 | 16 | 32 | 0.44 |
| CR-BS-Sunken58 | 5/8'' | 3.25 | 27 | 16 | 64 | 19 | 43 | 0.79 |
| CR-BS-Sunken34 | 3/4" | 4.75 | 31 | 19 | 76 | 22 | 51 | 1.26 |
| CR-BS-Sunken78 | 7/8" | 6.5 | 36 | 22 | 83 | 25 | 58 | 1.88 |
| CR-BS-Sunken01 | 1'' | 8.5 | 43 | 25 | 95 | 28 | 68 | 2.78 |
| CR-BS-Sunken118 | 1-1/8" | 9.5 | 47 | 28 | 108 | 32 | 75 | 3.88 |
| CR-BS-Sunken114 | 1-1/4" | 12 | 51 | 32 | 115 | 35 | 83 | 5.26 |
| CR-BS-Sunken138 | 1-3/8" | 13.5 | 57 | 35 | 133 | 38 | 92 | 6.94 |