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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 13/16"-16 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 13/16"-16 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a Mil. Spec. key-locking insert with an Extra Heavy Wall, supplied in a 10 PK. It features 4 keys, a 1/2"-13 internal thread size, a 13/16"-16 external thread size, and a…

SKU 3G-OTH-531658

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 13/16"-16 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076338
Type
10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
13/16"-16
Finish Type
Plain
Int Thrd Sz
1/2"-13
Thread Type
Coarse
Industry Standards
MS51832-101L
Compatible Tap Size
13/16"-16
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 Mil. Spec. key-locking insert with an Extra Heavy Wall, supplied in a 10 PK. It features 4 keys, a 1/2"-13 internal thread size, a 13/16"-16 external thread size, and a coarse thread type. This inch-system insert is made from 18-8 material with a plain finish, meets industry standard MS51832-101L, and has an external thread fit of 2A and internal thread fit of 3B.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert is used to repair or reinforce tapped threads in metal assemblies, particularly in aerospace, defense, and industrial equipment. The APPROVED VENDOR Extra Heavy Wall insert with 4 keys provides a permanent, high-strength thread repair that resists vibration loosening in demanding applications.

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

This Mil. Spec. insert has an internal thread size of 1/2"-13, external thread size of 13/16"-16, and an Extra Heavy Wall. It is made from 18-8 stainless steel with a plain finish, meets MS51832-101L, and has 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 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for these Mil. Spec. inserts. Contact us to source this MS51832-101L-compliant 10-pack for your thread repair needs.

How to install a key locking insert?

Installation requires drilling out the damaged thread to the specified tap size (13/16"-16 for this insert), tapping the hole, then driving the insert using a compatible installation tool. The 4 keys lock into the parent material to prevent rotation. Always follow the manufacturer's recommended procedure for Mil. Spec. inserts.

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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