Rockmount Research and Alloys 90375 Thread Locking Insert: 7/16-14 Internal Thread, M16 x 1.75 External Thread, UNC, 55/64" OAL, Self-Lock Thin Wall
Thread Locking Insert: 7/16-14 Internal Thread, M16 x 1.75 External Thread, UNC, 55/64" OAL, Self-Lock Thin Wall Case-Hardened Steel
$10.88