A range of forged shackles that have been quenched and tempered to give strength and resilience, to meet the requirements of USA Federal Specifications with the Working Load Limit permanently shown on every shackle. [Look out for the Red Pin, the mark of Crosby quality]. Choose Bow shackles when the lift is from more than one rope Screw Pin Shackles meet the requirements of the Federal Specification RR-C-271D Type IVB, Grade A, Class 2. Even if you are lifting relatively light items it is often worth choosing the very popular 1 t size which will be endlessly useful for future use. Bolt Type Shackles have the most secure pin design. Meets the requirements of the U.S. Federal Specification RR-C-271D Type IVB, Grade A, Class 3. Choose Bolt Shackles when the shackle pin is difficult to frequently inspect, typically permanently rigged applications
