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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, 5/16"-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, 5/16"-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 (10 PK) with a 5/16"-18 internal thread and 7/16"-14 external thread, meeting MS51831-102. Made from 18-8 stainless steel…

SKU 3G-OTH-531798

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, 5/16"-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
217-076323
Type
Plain, 10 PK
Keys
4
Wall Type
Thin Wall
Ext Thrd Sz
7/16"-14
Finish Type
Plain
Int Thrd Sz
5/16"-18
Thread Type
Coarse
Industry Standards
MS51831-102
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 (10 PK) with a 5/16"-18 internal thread and 7/16"-14 external thread, meeting MS51831-102. 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 demand and sources this genuine industrial insert across 14 departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.

Frequently Asked Questions

What is an APPROVED VENDOR Key Locking Insert used for?

This thin-wall, 4-key insert repairs or reinforces tapped holes in metal assemblies, meeting Mil. Spec. MS51831-102. It is used across aerospace, defense, and industrial equipment where a secure, removable thread is required. 3G Electric sources this genuine insert across 14 departments, with specialist depth in combustion, pumps and controls.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-076323?

This insert has a 5/16"-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, thin wall, 4 keys, and meets MS51831-102. Compatible tap size is 7/16"-14. Sold in a 10-pack.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies and delivers the APPROVED VENDOR Key Locking Insert (MPN 217-076323) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance, ensuring you receive the correct Mil. Spec. insert for your application. Contact us for availability and lead time.

How to install a thin-wall key locking insert?

Installation requires tapping the hole to the compatible tap size (7/16"-14), 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. Always follow the manufacturer's instructions for torque and depth.

Used in

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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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