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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 3/4"-10 Int Thrd Sz, 1 1/4"-12 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 3/4"-10 Int Thrd Sz, 1 1/4"-12 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 3/4"-10 internal thread size, a 1 1/4"-12 external thread size, and a…

SKU 3G-OTH-531667

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 3/4"-10 Int Thrd Sz, 1 1/4"-12 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077341
Type
10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
1 1/4"-12
Finish Type
Plain
Int Thrd Sz
3/4"-10
Thread Type
Coarse
Drill Bit Size
1-11/64 in
Industry Standards
MS51830-204L
Compatible Tap Size
1-1/4"-12
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 3/4"-10 internal thread size, a 1 1/4"-12 external thread size, and a plain finish. The insert meets MS51830-204L standards, is made from 18-8 material, and requires a 1-11/64 in drill bit with a 1-1/4"-12 compatible tap size.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert repairs or reinforces tapped holes in soft materials like aluminum. The external keys lock the insert into the parent material, preventing rotation under vibration. This APPROVED VENDOR extra heavy wall insert meets MS51830-204L standards for aerospace and defense applications.

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

This insert has an extra heavy wall, 4 keys, 3/4"-10 internal thread, and 1 1/4"-12 external thread. It requires a 1-11/64 in drill bit and 1-1/4"-12 tap. Made from 18-8 stainless steel with plain finish, it meets MS51830-204L and has external thread fit 2A, internal fit 3B.

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, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this MS51830-204L compliant insert.

How to install a key locking insert?

Drill a hole to 1-11/64 in, tap it to 1-1/4"-12, then thread the insert into the tapped hole using a driving tool. The 4 keys lock into the parent material when the insert is fully seated. Use a key locking insert installation tool to avoid damaging the internal threads.

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.
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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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