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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, 5/16"-24 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, 5/16"-24 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 (MS51831-108) with a 5/16"-24 internal thread and 7/16"-14 external coarse thread, supplied in a 10-pack. Made from 18-8…

SKU 3G-OTH-531724

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, 5/16"-24 Int Thrd Sz, 7/16"-14 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076523
Type
Plain, 10 PK
Keys
4
Wall Type
Thin Wall
Ext Thrd Sz
7/16"-14
Finish Type
Plain
Int Thrd Sz
5/16"-24
Thread Type
Coarse
Industry Standards
MS51831-108
Compatible Tap Size
7/16"-14
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, 4-key, plain-finish Mil. Spec. insert (MS51831-108) with a 5/16"-24 internal thread and 7/16"-14 external coarse 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 size. 3G Electric interprets this demand and delivers it across 14 industrial departments — with specialist depth in combustion, pumps and controls as an authorised distributor — ensuring you get the right answer, not just a catalog.

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, 4-key insert repairs or reinforces tapped threads in metal assemblies, meeting Mil. Spec. MS51831-108. It is commonly used in aerospace, defense, and industrial equipment where a secure, removable thread is required. 3G Electric supplies this insert across 14 industrial departments, with specialist depth in combustion, pumps and controls.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-076523?

This 10-pack insert has a 5/16"-24 internal thread and 7/16"-14 external coarse thread, with 2A external and 3B internal thread fits. It is made from 18-8 stainless steel, has a plain finish, and is compatible with a 7/16"-14 tap. It meets MS51831-108 standards.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies the APPROVED VENDOR Key Locking Insert (MPN 217-076523) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this Mil. Spec. insert to your facility. Contact us for availability and lead time.

How to install an APPROVED VENDOR Key Locking Insert?

Installation requires tapping a hole to 7/16"-14, then driving the insert using a compatible tool until the keys engage. The 18-8 stainless steel body provides corrosion resistance. For best results, follow MS51831-108 guidelines. 3G Electric can advise on tooling and application support.

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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