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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, 3/8"-24 Int Thrd Sz, 1/2"-13 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, 3/8"-24 Int Thrd Sz, 1/2"-13 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a thin-wall, inch-system Mil. Spec. insert with 4 keys, 3/8"-24 internal thread size, and 1/2"-13 external thread size. It meets MS51831-109 standards, features 18-8…

SKU 3G-OTH-531799

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, 3/8"-24 Int Thrd Sz, 1/2"-13 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076524
Type
Plain, Plain, 10 PK
Keys
4
Wall Type
Thin Wall
Ext Thrd Sz
1/2"-13
Finish Type
Plain
Int Thrd Sz
3/8"-24
Thread Type
Coarse
Industry Standards
MS51831-109
Compatible Tap Size
1/2"-13
External Thread Fit
2A
Internal Thread Fit
3B
Material Grade/Class
18-8
System of Measurement
Inch
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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, inch-system Mil. Spec. insert with 4 keys, 3/8"-24 internal thread size, and 1/2"-13 external thread size. It meets MS51831-109 standards, features 18-8 material, 2A external and 3B internal thread fits, and is supplied as a plain, 10-pack.

Frequently Asked Questions

What is an APPROVED VENDOR Key Locking Insert used for?

This thin-wall key locking insert is used to repair or reinforce tapped threads in metal assemblies, particularly in aerospace and defense applications. It meets Mil. Spec. MS51831-109, providing a secure 18-8 stainless steel thread with 4 locking keys to prevent rotation under vibration.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-076524?

This insert has a 3/8"-24 internal thread and 1/2"-13 external thread, with 2A external and 3B internal thread fits. It is made of 18-8 stainless steel, has a thin wall, 4 keys, plain finish, and meets MS51831-109. Supplied as a 10-pack by APPROVED VENDOR.

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 to source this MS51831-109 compliant insert in a 10-pack, with lead time on request.

How to install a thin-wall key locking insert?

Installation requires tapping the hole to the compatible tap size (1/2"-13), then driving the insert using a key locking insert tool until it is flush or slightly below the surface. The 4 keys lock into the parent material to prevent rotation. Use thread locking compound per Mil. Spec. guidelines.

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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