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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 is made from 18-8 material, plain finish, with coarse…

SKU 3G-OTH-531688

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
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077351
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
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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 is made from 18-8 material, plain finish, with coarse threads, and meets Fed Std. H28/21 and MJ Form standards. This 10-pack insert has a 2A external thread fit and 3B internal thread fit, compatible with M8x1.25 tap size.

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 repairs or reinforces tapped threads in metal assemblies, particularly in aerospace and defense applications. Its four keys lock the insert into place, preventing rotation under vibration. The M5x0.8 internal thread accepts standard metric fasteners, while the M8x1.25 external thread mates with the parent material.

What are the specifications of the APPROVED VENDOR Key Locking Insert?

This 10-pack insert has a thin wall, 4 keys, M5x0.8 internal thread, and M8x1.25 external thread. It is made from 18-8 stainless steel with a plain finish, coarse threads, and meets Fed Std. H28/21 and MJ Form standards. External thread fit is 2A; internal thread fit is 3B. 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 for international orders. Contact us for availability and lead time on this 10-pack thin-wall insert with M5x0.8 internal thread and M8x1.25 external thread.

How to install a thin-wall key locking insert?

First, tap the hole to the specified compatible tap size (M8x1.25) using a proper tap. Then, screw the insert onto the installation tool and thread it into the tapped hole until it is slightly below the surface. Finally, drive the keys down using the key-setting tool to lock the insert in place. Always follow the manufacturer's instructions 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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