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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M5x0.8 Int Thrd Sz, M10x1.25 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M5x0.8 Int Thrd Sz, M10x1.25 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil. spec. insert with 4 keys, M5x0.8 internal thread size, M10x1.25 external thread size, plain finish, and coarse thread type. It meets Fed Std. H28/21 and MJ…

SKU 3G-OTH-531781

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, M5x0.8 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
217-077364
Type
M5x0.8 Int Thrd Sz, M10x1.25 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
M10x1.25
External Thread Fit
2A
Internal Thread Fit
3B
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 heavy-wall, mil. spec. insert with 4 keys, M5x0.8 internal thread size, M10x1.25 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 M10x1.25, external thread fit 2A, internal thread fit 3B, and is made from 18-8 material in a 10-pack.

Frequently Asked Questions

What is an APPROVED VENDOR key locking insert used for?

This heavy-wall key locking insert is used to repair or reinforce threaded holes in metal assemblies, particularly in aerospace, defense, and industrial applications requiring mil. spec. reliability. The 4 keys lock the insert in place to prevent rotation under vibration.

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

This insert has an M5x0.8 internal thread and M10x1.25 external thread, heavy wall, plain finish, coarse thread, and 18-8 material. It meets Fed Std. H28/21 and MJ Form standards, with external thread fit 2A and internal thread fit 3B. Supplied in a 10-pack.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this M5x0.8 internal thread, M10x1.25 external thread, heavy-wall, 10-pack insert.

How to install a key locking insert?

Installation requires drilling the stripped hole to the specified tap size (M10x1.25), tapping the hole, then threading the insert in using a compatible installation tool. The 4 keys are then set into the parent material to lock the insert. Follow mil. spec. guidelines for torque and depth.

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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