This is a type 316 stainless steel long D shackle with a captive pin and is commonly used for attaching stainless steel marine hardware and rigging. Captive pin shackles are self-locking and the pin is connected to the body at all times. When the long D shackle is fully opened, the end of the pin will sit flush with the inside of the shackle.
Type 316 stainless steel








