Historical
SAE AS 4958A-2013 (SAE AS4958A-2013)
Performance, Nut, Self-Locking, Castellated, Prevailing Torque, UNJ 16 Pitch Thread Form
This document covers all metal, castellated, self-locking nuts made from alloy steel of the types identified under the Unified Numbering System as UNS G41300 and UNS G43400.
Society of Automotive Engineers [sae]