Open Grooved Sockets meet the
performance requirements of FederalSpecification RR-S-550D, Type A, except for those provisions required of the contractor Forged Steel Sockets thru 1-12", cast alloy steel 1-58" thru 4".
Spelter socket terminations have an efficiency rating of 100%, based on the catalog strength of wire rope. Ratings are based on recommended use with 6 x 7, 6 x 19, or 6 x 37, IPS or XIP (EIP), XXIP (EEIP), RRL, FC, or IWRC wire rope.