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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 2 Keys, #6-32 Int Thrd Sz, 5/16"-18 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 2 Keys, #6-32 Int Thrd Sz, 5/16"-18 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a Mil. Spec. key-locking insert with an Extra Heavy Wall, featuring a #6-32 internal thread size and 5/16"-18 external thread size. Supplied as a 10-pack in plain finish, it…

SKU 3G-OTH-531620

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 2 Keys, #6-32 Int Thrd Sz, 5/16"-18 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076331
Type
#6-32 Int Thrd Sz, Plain, 10 PK
Keys
2
Wall Type
Extra Heavy Wall
Ext Thrd Sz
5/16"-18
Finish Type
Plain
Thread Type
Coarse
Industry Standards
MIL-I-45914A (MS51832)
Compatible Tap Size
5/16"-18
External Thread Fit
2A
Internal Thread Fit
3B
Material Grade/Class
303
System of Measurement
Inch
View Full Spec Sheet

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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 a #6-32 internal thread size and 5/16"-18 external thread size. Supplied as a 10-pack in plain finish, it meets MIL-I-45914A (MS51832) standards, with 303 stainless steel construction, 2 keys, and coarse thread type.

Frequently Asked Questions

What is a Mil. Spec. key-locking insert used for?

A Mil. Spec. key-locking insert, like the APPROVED VENDOR Extra Heavy Wall type, is used to repair or reinforce threads in metal assemblies, particularly in aerospace, defense, and industrial equipment. The keys lock the insert in place to prevent rotation under vibration, ensuring reliable threaded connections.

What are the specifications of the APPROVED VENDOR Key Locking Insert?

This insert has a #6-32 internal thread and 5/16"-18 external thread, with an Extra Heavy Wall in 303 stainless steel. It meets MIL-I-45914A (MS51832) standards, includes 2 keys, and has a plain finish. External thread fit is 2A; internal fit is 3B. Supplied as a 10-pack.

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 to source this Mil. Spec. insert for your application.

How to install a key-locking insert?

To install a key-locking insert, drill and tap the hole to the specified compatible tap size (5/16"-18 for this insert). Use an installation tool to thread the insert into the hole, then drive the keys into the parent material using a key-setting tool to lock it in place. Follow MIL-I-45914A guidelines.

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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