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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, M6-0.75 Int Thrd Sz, M10x1.25 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, M6-0.75 Int Thrd Sz, M10x1.25 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a thin-wall, mil. spec. insert with 4 keys, M6-0.75 internal thread size, M10x1.25 external thread size, plain finish, and 18-8 material. It meets Fed Std. H28/21 and MJ Form…

SKU 3G-OTH-531715

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, M6-0.75 Int Thrd Sz, M10x1.25 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077552
Type
M6-0.75 Int Thrd Sz, M10x1.25 Ext Thrd Sz, Plain, 10 PK
Keys
4
Wall Type
Thin Wall
Finish Type
Plain
Thread Type
Coarse
Industry Standards
Fed Std. H28/21, MJ Form
Compatible Tap Size
M10x1.25
External Thread Fit
2A
Internal Thread Fit
3B
Internal Thread Size
M6-0.75
Material Grade/Class
18-8
System of Measurement
Metric
View Full Spec Sheet

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APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Key Locking Insert is a thin-wall, mil. spec. insert with 4 keys, M6-0.75 internal thread size, M10x1.25 external thread size, plain finish, and 18-8 material. It meets Fed Std. H28/21 and MJ Form standards, with 2A external and 3B internal thread fits, supplied in a 10-pack.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert is used to repair or reinforce internal threads in metal assemblies, especially in aerospace and defense applications. The APPROVED VENDOR thin-wall insert with 4 keys provides a permanent thread in soft materials, meeting mil. spec. standards for high-reliability joints.

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

This thin-wall insert has M6-0.75 internal thread size and M10x1.25 external thread size, with 4 keys and plain finish. It is made of 18-8 stainless steel, meets Fed Std. H28/21 and MJ Form standards, and has 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. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver these mil. spec. inserts to your facility. Contact us for pricing and lead time on the 10-pack (MPN 217-077552).

How to install a key locking insert?

Installation requires drilling to the compatible tap size (M10x1.25), tapping the hole, then driving the insert using a key locking insert tool until the keys engage. Ensure the external thread fit (2A) aligns with the tapped hole. Follow mil. spec. guidelines for torque and depth to avoid cross-threading.

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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