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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M10x1.25 Int Thrd Sz, M16x1.5 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M10x1.25 Int Thrd Sz, M16x1.5 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a Mil. Spec. heavy-wall insert with 4 keys, M10x1.25 internal thread size, M16x1.5 external thread size, plain finish, and coarse thread type. It meets Fed Std. H28/21 and MJ…

SKU 3G-OTH-531698

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, M10x1.25 Int Thrd Sz, M16x1.5 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077567
Type
M10x1.25 Int Thrd Sz, M16x1.5 Ext Thrd Sz, Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Finish Type
Plain
Thread Type
Coarse
Industry Standards
Fed Std. H28/21, MJ Form
Compatible Tap Size
M16x1.5
External Thread Fit
2A
Internal Thread Fit
3B
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, M10x1.25 internal thread size, M16x1.5 external thread size, plain finish, and coarse thread type. It meets Fed Std. H28/21 and MJ Form standards, with a compatible tap size of M16x1.5, external thread fit 2A, internal thread fit 3B, and is made from 18-8 material in metric measurement. Supplied in a 10-pack (MPN 217-077567), this insert is part of our curated industrial offering across 14 departments, with specialist depth in fastening and threading solutions.

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 is used to repair or reinforce tapped threads in metal assemblies, providing a durable, reusable thread that resists loosening under vibration. The APPROVED VENDOR heavy-wall insert with 4 keys is ideal for aerospace, defense, and industrial applications requiring Mil. Spec. compliance.

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

This heavy-wall insert has M10x1.25 internal thread and M16x1.5 external thread, with 4 keys, plain finish, and coarse thread. It meets Fed Std. H28/21 and MJ Form standards, with external thread fit 2A, internal thread fit 3B, and is made from 18-8 stainless steel in metric measurement.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies the APPROVED VENDOR key locking insert (MPN 217-077567) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this Mil. Spec. insert to your facility, supporting fastening needs across 14 industrial departments.

How to install a key locking insert?

Installation requires tapping the hole to the compatible tap size (M16x1.5), then driving the insert using a key locking insert tool until it sits below the surface. The 4 keys lock into the parent material to prevent rotation. Always follow the manufacturer's torque and depth guidelines for 18-8 stainless steel inserts.

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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