U.S.Bolt Type Chain Shackles is used as a connecting link ... industrial A shackle, also known as a gyve, is a U-shaped piece of metal secured with a clevis pin or ... , from boats and ships to industrial crane rigging.Production Name: U.S.Bolt Type Chain ShacklesMaterial: Mild steel/ Carbon steel C1045Process: Forged ... .00368.0104.00254.0229.0-653.0468.0-501.65 U.S.Bolt Type Chain Shackles