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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 3/4"-16 Int Thrd Sz, 1 1/8"-12 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 3/4"-16 Int Thrd Sz, 1 1/8"-12 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil-spec insert with 4 keys, a 3/4"-16 internal thread size, and a 1 1/8"-12 external thread size. Supplied as a plain, 10-pack (MPN 217-076509), it meets…

SKU 3G-OTH-531731

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, 3/4"-16 Int Thrd Sz, 1 1/8"-12 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076509
Type
Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Ext Thrd Sz
1 1/8"-12
Finish Type
Plain
Int Thrd Sz
3/4"-16
Thread Type
Coarse
Drill Bit Size
1-3/64 in
Industry Standards
MS51832-203
Compatible Tap Size
1-1/8"-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 heavy-wall, mil-spec insert with 4 keys, a 3/4"-16 internal thread size, and a 1 1/8"-12 external thread size. Supplied as a plain, 10-pack (MPN 217-076509), it meets MS51832-203 standards, is made from 18-8 material, and requires a 1-3/64 in drill bit with a 1-1/8"-12 compatible tap size.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert is used to repair or reinforce tapped threads in metal assemblies, especially in aerospace, defense, and industrial equipment. The APPROVED VENDOR heavy-wall insert with 4 keys provides a permanent, vibration-resistant thread repair that meets MS51832-203 mil-spec standards.

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

This heavy-wall insert has a 3/4"-16 internal thread and a 1 1/8"-12 external thread, with 4 keys. It is made from 18-8 stainless steel, plain finish, and meets MS51832-203. The required drill bit size is 1-3/64 in, and the compatible tap size is 1-1/8"-12. Supplied as a 10-pack.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies the APPROVED VENDOR key locking insert (MPN 217-076509) to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this mil-spec, 10-pack insert.

How to install a key locking insert?

To install, drill a hole to 1-3/64 in, tap it to 1-1/8"-12 thread, then screw the insert in using a compatible installation tool. The 4 keys lock into the parent material to prevent rotation. Use a tang break-off tool if required. Follow MS51832-203 guidelines for torque and depth.

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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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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