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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, #10-32 Int Thrd Sz, 3/8"-16 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, #10-32 Int Thrd Sz, 3/8"-16 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, inch-system mil-spec insert with #10-32 internal thread size and 3/8"-16 external thread size, featuring 4 keys and a plain finish. It meets MS51830-201…

SKU 3G-OTH-531628

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, #10-32 Int Thrd Sz, 3/8"-16 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076501
Type
#10-32 Int Thrd Sz, Plain, Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Ext Thrd Sz
3/8"-16
Finish Type
Plain
Thread Type
Coarse
Industry Standards
MS51830-201
Compatible Tap Size
3/8"-16
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, inch-system mil-spec insert with #10-32 internal thread size and 3/8"-16 external thread size, featuring 4 keys and a plain finish. It meets MS51830-201 standards, is made from 18-8 material with 2A external and 3B internal thread fits, and is compatible with a 3/8"-16 tap. Sold in a 10-pack (MPN 217-076501), this insert is designed for coarse-thread applications requiring a heavy-wall, key-locking design.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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, providing a heavy-duty, reusable thread that resists loosening under vibration. The APPROVED VENDOR heavy-wall insert with 4 keys is designed for coarse-thread applications meeting MS51830-201 standards, commonly used in aerospace, military, and industrial equipment.

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

This heavy-wall insert has a #10-32 internal thread size and 3/8"-16 external thread size, with 4 keys and a plain finish. It meets MS51830-201 standards, is made from 18-8 stainless steel, and has 2A external and 3B internal thread fits. Compatible tap size is 3/8"-16. Sold in a 10-pack (MPN 217-076501).

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies the APPROVED VENDOR key locking insert (MPN 217-076501) to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order this 10-pack of heavy-wall, mil-spec inserts for your threaded repair needs.

How to install a key locking insert?

To install a key locking insert, tap the hole to the specified compatible tap size (3/8"-16 for this insert), then use a key locking insert installation tool to drive the insert into the tapped hole until the keys engage. Ensure the insert is flush or slightly below the surface. Follow standard mil-spec installation practices for MS51830-201 inserts.

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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