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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M16x1.5 Int Thrd Sz, M22-1.50 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M16x1.5 Int Thrd Sz, M22-1.50 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil. spec. insert with 4 keys, M16x1.5 internal thread size, and M22-1.50 external thread size, supplied in a plain finish, 10-pack. It meets Fed Std. H28/21…

SKU 3G-OTH-531785

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, M16x1.5 Int Thrd Sz, M22-1.50 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076571
Type
M16x1.5 Int Thrd Sz, M22-1.50 Ext Thrd Sz, Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Finish Type
Plain
Thread Type
Coarse
Drill Bit Size
20.60 mm
Industry Standards
Fed Std. H28/21, MJ Form
Compatible Tap Size
M22-1.50
External Thread Fit
2A
Internal Thread Fit
3B
External Thread Size
M22-1.50
Material Grade/Class
18-8
System of Measurement
Metric
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APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil. spec. insert with 4 keys, M16x1.5 internal thread size, and M22-1.50 external thread size, supplied in a plain finish, 10-pack. It meets Fed Std. H28/21 and MJ Form standards, features 18-8 material, coarse thread type, 2A external and 3B internal thread fits, and requires a 20.60 mm drill bit with M22-1.50 compatible tap size.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert repairs or reinforces stripped threads in metal assemblies, providing a heavy-duty, mil. spec. threaded hole. The APPROVED VENDOR M16x1.5 internal thread insert with 4 keys locks into place to prevent rotation under vibration, ideal for aerospace, defense, and industrial equipment requiring reliable thread restoration.

What are the specifications of the APPROVED VENDOR key locking insert?

This heavy-wall insert has M16x1.5 internal thread, M22-1.50 external thread, 4 keys, plain finish, and 18-8 material. It requires a 20.60 mm drill bit and M22-1.50 tap, meets Fed Std. H28/21 and MJ Form standards, with 2A external and 3B internal thread fits. Supplied in a 10-pack.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner across 14 industrial departments, we provide genuine mil. spec. inserts like this M16x1.5 heavy-wall, 4-key, 10-pack. Contact us for availability and lead time.

How to install a key locking insert?

Drill a 20.60 mm hole, tap it to M22-1.50 using a compatible tap, then thread the insert in until it sits below the surface. The 4 keys lock into the parent material to prevent rotation. Use a standard installation tool; no special adhesives required. Follow Fed Std. H28/21 for torque and depth guidelines.

Used in

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Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED VENDOR Products

3G Electric supplies APPROVED VENDOR mil. spec. key-locking inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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