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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, 3/8"-18 Int Thrd Sz, 7/16"-14 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"-18 Int Thrd Sz, 7/16"-14 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a thin-wall, 4-key, plain-finish Mil. Spec. insert (MS51832-101) with a 3/8"-18 internal thread and 7/16"-14 external thread, supplied in a 10-pack. Made from 18-8 stainless…

SKU 3G-OTH-531756

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, 3/8"-18 Int Thrd Sz, 7/16"-14 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077323
Type
Plain, 10 PK
Keys
4
Wall Type
Thin Wall
Ext Thrd Sz
7/16"-14
Finish Type
Plain
Int Thrd Sz
3/8"-18
Thread Type
Coarse
Industry Standards
MS51832-101
Compatible Tap Size
7/16"-14
External Thread Fit
2A
Internal Thread Fit
3B
Material Grade/Class
18-8
System of Measurement
Inch
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, 4-key, plain-finish Mil. Spec. insert (MS51832-101) with a 3/8"-18 internal thread and 7/16"-14 external thread, supplied in a 10-pack. Made from 18-8 stainless steel with 2A external and 3B internal thread fits, it is compatible with a 7/16"-14 tap and uses inch measurements.

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 tapped threads in soft materials like aluminum or cast iron. The thin-wall, 4-key design locks the insert into place, preventing rotation under load. This APPROVED VENDOR insert meets MS51832-101 and is suitable for aerospace, defense, and industrial maintenance applications.

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

This thin-wall insert has a 3/8"-18 internal thread and 7/16"-14 external thread, with 2A external and 3B internal thread fits. It is made from 18-8 stainless steel, plain finish, includes 4 keys, and meets MS51832-101. Supplied in a 10-pack, it requires a 7/16"-14 tap and uses inch measurements.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this MS51832-101 thin-wall insert in a 10-pack.

How to install a key locking insert?

Drill and tap the hole to the specified compatible tap size (7/16"-14 for this insert). Use a key locking insert installation tool to thread the insert into the tapped hole until the keys engage. Ensure the insert is flush or slightly below the surface. No special adhesives are required for locking.

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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