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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, M5x0.8 Int Thrd Sz, M8x1.25 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, M5x0.8 Int Thrd Sz, M8x1.25 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a thin-wall, metric mil-spec insert with 4 keys, M5x0.8 internal thread size, and M8x1.25 external thread size. It features a plain finish, coarse thread type, 18-8 material…

SKU 3G-OTH-531687

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, M5x0.8 Int Thrd Sz, M8x1.25 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076351
Type
M5x0.8 Int Thrd Sz, M8x1.25 Ext Thrd Sz, Plain, 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
M8x1.25
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 thin-wall, metric mil-spec insert with 4 keys, M5x0.8 internal thread size, and M8x1.25 external thread size. It features a plain finish, coarse thread type, 18-8 material grade, and meets Fed Std. H28/21 and MJ Form standards. Supplied in a 10-pack, it has a 2A external thread fit and 3B internal thread fit, with a compatible tap size of M8x1.25.

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 an APPROVED VENDOR Key Locking Insert used for?

This thin-wall key locking insert with 4 keys is used to repair or reinforce threaded holes in metal assemblies, particularly in aerospace and defense applications. It meets Fed Std. H28/21 and MJ Form standards for mil-spec thread repair, providing a durable 18-8 stainless steel thread in metric sizes.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-076351?

This 10-pack insert has an M5x0.8 internal thread and M8x1.25 external thread, with a thin wall, plain finish, and coarse thread type. It is made of 18-8 stainless steel, meets Fed Std. H28/21 and MJ Form standards, and has a 2A external and 3B internal thread fit. Compatible tap size is M8x1.25.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies and delivers APPROVED VENDOR Key Locking Inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure these mil-spec inserts reach your facility, whether for aerospace maintenance or defense manufacturing.

How to install an APPROVED VENDOR Key Locking Insert?

Installation requires tapping the hole to the compatible tap size (M8x1.25), then using a key locking insert tool to drive the insert until the keys engage. The 18-8 stainless steel material provides corrosion resistance. Always follow mil-spec guidelines for torque and thread fit to ensure a secure repair.

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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