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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 5/8"-11 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 5/8"-11 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a thin-wall, inch-series Mil. Spec. insert with 4 keys, 1/2"-13 internal thread, 5/8"-11 external thread, and 18-8 material. It meets MS51831-105, has 2A external and 3B…

SKU 3G-OTH-531722

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 5/8"-11 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076326
Type
Plain, Plain, 10 PK
Keys
4
Wall Type
Thin Wall
Ext Thrd Sz
5/8"-11
Finish Type
Plain
Int Thrd Sz
1/2"-13
Thread Type
Coarse
Industry Standards
MS51831-105
Compatible Tap Size
5/8"-11
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-series Mil. Spec. insert with 4 keys, 1/2"-13 internal thread, 5/8"-11 external thread, and 18-8 material. It meets MS51831-105, has 2A external and 3B internal thread fits, and comes in a 10-pack plain finish.

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 a key locking insert used for?

A key locking insert repairs or reinforces stripped threads in metal assemblies. The APPROVED VENDOR thin-wall insert with 4 keys provides a permanent, vibration-resistant thread in applications requiring Mil. Spec. MS51831-105 compliance, such as aerospace or defense equipment.

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

This thin-wall insert has a 1/2"-13 internal thread and 5/8"-11 external thread, with 2A external and 3B internal thread fits. It is made of 18-8 stainless steel, meets MS51831-105, and comes in a 10-pack with plain finish. Compatible tap size is 5/8"-11.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver Mil. Spec. inserts like the MS51831-105 thin-wall 10-pack to your facility, regardless of location.

How to install a thin-wall key locking insert?

Installation requires tapping the hole to the specified compatible tap size (5/8"-11), 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. Follow Mil. Spec. MS51831-105 guidelines for best results.

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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