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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 Mil. Spec. heavy-wall insert with 4 keys, M16x1.5 internal thread size, and M22-1.50 external thread size, supplied in a plain finish (10 PK). It meets Fed Std. H28/21 and…

SKU 3G-OTH-531789

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
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077571
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 Mil. Spec. heavy-wall insert with 4 keys, M16x1.5 internal thread size, and M22-1.50 external thread size, supplied in a plain finish (10 PK). It meets Fed Std. H28/21 and MJ Form standards, with 18-8 material, 20.60 mm drill bit size, M22-1.50 compatible tap size, 2A external thread fit, and 3B internal thread fit.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert repairs or reinforces tapped holes in metal assemblies, especially where vibration could loosen standard threads. The APPROVED VENDOR heavy-wall insert with 4 keys locks into place, providing a durable 18-8 stainless steel thread for M16x1.5 internal and M22-1.50 external connections.

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

This Mil. Spec. insert has a heavy wall, 4 keys, M16x1.5 internal thread, M22-1.50 external thread, plain finish, 20.60 mm drill bit size, M22-1.50 compatible tap, 2A external fit, 3B internal fit, and 18-8 material. It meets Fed Std. H28/21 and MJ Form standards.

Where to buy APPROVED VENDOR key locking inserts worldwide?

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 Mil. Spec. heavy-wall inserts with 4 keys to your facility, regardless of location.

How to install a key locking insert?

Drill a 20.60 mm hole, tap with an M22-1.50 tap, then thread the insert into the hole using a driver. The 4 keys lock into the parent material to prevent rotation. Use a plain finish insert for general applications; ensure the external thread fit is 2A and internal is 3B for proper engagement.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
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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