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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 3/8"-16 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: Heavy Wall, 4 Keys, 3/8"-16 Int Thrd Sz, 9/16"-12 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, inch-system Mil. Spec. insert with 4 keys, a 3/8"-16 internal thread and a 9/16"-12 external thread. Supplied in a plain finish, 10-pack, it meets MS51832-210…

SKU 3G-OTH-531733

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, 3/8"-16 Int Thrd Sz, 9/16"-12 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077304
Type
Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Ext Thrd Sz
9/16"-12
Finish Type
Plain
Int Thrd Sz
3/8"-16
Thread Type
Coarse
Industry Standards
MS51832-210
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 heavy-wall, inch-system Mil. Spec. insert with 4 keys, a 3/8"-16 internal thread and a 9/16"-12 external thread. Supplied in a plain finish, 10-pack, it meets MS51832-210 standards and is made from 18-8 material with 2A external and 3B internal thread fits.

Frequently Asked Questions

What is an APPROVED VENDOR Key Locking Insert used for?

This heavy-wall key locking insert repairs or reinforces tapped threads in metal assemblies, typically in aerospace, defense, and industrial equipment. The 4 keys lock it in place, preventing rotation under vibration. It meets Mil. Spec. MS51832-210 for critical threaded connections.

What are the specifications of the APPROVED VENDOR 217-077304 Key Locking Insert?

This 10-pack insert has a 3/8\"-16 internal thread and 9/16\"-12 external thread, heavy wall, plain finish, 4 keys, 18-8 material, 2A external and 3B internal thread fits. It meets MS51832-210 standards and is compatible with a 9/16\"-12 tap. System of measurement is inch.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies the APPROVED VENDOR 217-077304 Key Locking Insert 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. insert.

How to install a key locking insert like the APPROVED VENDOR MS51832-210?

Installation requires tapping the hole to the specified external thread size (9/16\"-12), then winding the insert in using a compatible installation tool. The 4 keys are then set into the parent material to lock the insert. Follow standard Mil. Spec. installation procedures for best results.

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.
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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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