APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M12x1.75 Int Thrd Sz, M18-1.50 Ext Thrd Sz

APPROVED VENDOR Mil. Spec. Key-Locking Inserts are used to repair or reinforce threaded holes in metal assemblies, especially in aerospace and defense applications. The heavy-wall design with 4 keys provides high pull-out resistance, meeting Fed Std. H28/21 and MJ Form standards for critical fastening.

This heavy-wall insert has M12x1.75 internal thread and M18-1.50 external thread, requiring a 16.70 mm drill bit and M18-1.50 tap. It is made of 18-8 stainless steel, plain finish, with external thread fit 2A and internal thread fit 3B, meeting Fed Std. H28/21 and MJ Form standards.

3G Electric supplies APPROVED VENDOR Key Locking Inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver these heavy-wall inserts with 4 keys, M12x1.75 internal thread, and M18-1.50 external thread to your facility.

Drill a 16.70 mm hole, tap it to M18-1.50 using a compatible tap, then thread the insert into the hole. The 4 keys lock into the parent material to prevent rotation. Use a standard installation tool and follow torque specifications for 18-8 stainless steel to avoid galling.