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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 5/16"-24 Int Thrd Sz, 9/16"-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, 5/16"-24 Int Thrd Sz, 9/16"-12 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a Mil. Spec. key-locking insert with an Extra Heavy Wall, featuring 4 keys, a 5/16"-24 internal thread size, and a 9/16"-12 external thread size. Supplied as a 10-pack (MPN…

SKU 3G-OTH-531641

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 5/16"-24 Int Thrd Sz, 9/16"-12 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077535
Type
10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
9/16"-12
Finish Type
Plain
Int Thrd Sz
5/16"-24
Thread Type
Coarse
Industry Standards
MS51832-203L
Compatible Tap Size
9/16"-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, featuring 4 keys, a 5/16"-24 internal thread size, and a 9/16"-12 external thread size. Supplied as a 10-pack (MPN 217-077535), it meets MS51832-203L standards, with 18-8 material, 2A external and 3B internal thread fits, and a compatible tap size of 9/16"-12.

Frequently Asked Questions

What is an APPROVED VENDOR Key Locking Insert used for?

This Mil. Spec. key-locking insert with extra heavy wall is used to repair or reinforce threaded holes in metal assemblies, particularly in aerospace, defense, and industrial applications requiring high pull-out strength. The 4 keys lock the insert into the parent material, preventing rotation under vibration or torque.

What are the specifications of the APPROVED VENDOR 217-077535 Key Locking Insert?

This 10-pack insert has a 5/16"-24 internal thread and 9/16"-12 external thread, with extra heavy wall, 4 keys, 18-8 material, 2A external and 3B internal thread fits. It meets MS51832-203L standards, compatible with a 9/16"-12 tap, and is plain finish, inch system.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts worldwide, handling full logistics and customs clearance. We source genuine Mil. Spec. components like the 217-077535 10-pack with extra heavy wall and 4 keys, ensuring compliance with MS51832-203L standards for global delivery.

How to install an APPROVED VENDOR Key Locking Insert?

Install using a compatible 9/16"-12 tap to cut threads, then drive the insert into the hole using a key-locking insert tool. The 4 keys must align with pre-cut keyways in the parent material. After installation, stake the keys to lock the insert. Use thread locker for added security in high-vibration environments.

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.
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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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