Crosby G-2169 Alloy Screw Pin “WIDE BODY” Shackles WLL 7. Forged Alloy Steel Quenched and Tempered, with alloy pins. Hot Dip Galvanized. Screw pin anchor shackles meet the performance requirements of Federal Specification RR-C-271F Type IVA, Grade B, Class 2, except for those provisions required of the contractor. Made in U.S.A.