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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 9/16"-12 Int Thrd Sz, 13/16"-16 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 9/16"-12 Int Thrd Sz, 13/16"-16 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil. spec. insert (MS51830-102L) with 4 keys, 9/16"-12 internal thread size, and 13/16"-16 external thread size. Supplied in a plain finish, 10-pack, this 18-8…

SKU 3G-OTH-531661

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, 9/16"-12 Int Thrd Sz, 13/16"-16 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077307
Type
Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Ext Thrd Sz
13/16"-16
Finish Type
Plain
Int Thrd Sz
9/16"-12
Thread Type
Coarse
Industry Standards
MS51830-102L
Compatible Tap Size
13/16"-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, mil. spec. insert (MS51830-102L) with 4 keys, 9/16"-12 internal thread size, and 13/16"-16 external thread size. Supplied in a plain finish, 10-pack, this 18-8 stainless steel inch-system insert features 2A external and 3B internal thread fits, compatible with a 13/16"-16 tap.

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 threaded holes in metal assemblies, particularly in aerospace, defense, and industrial equipment. The APPROVED VENDOR heavy-wall insert (MS51830-102L) provides a permanent, high-strength thread in soft materials, with four keys locking it in place to prevent rotation under vibration.

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

This heavy-wall insert has a 9/16"-12 internal thread and 13/16"-16 external thread, with 2A external and 3B internal thread fits. It is made of 18-8 stainless steel, plain finish, and comes in a 10-pack. It meets mil. spec. MS51830-102L and is compatible with a 13/16"-16 tap.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies the APPROVED VENDOR key locking insert (MPN 217-077307) to customers worldwide. As a global industrial solutions provider, 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?

To install, tap the hole to the specified compatible tap size (13/16"-16 for this insert), then screw the insert into the tapped hole using a driving tool. The four keys are then set into the parent material using a key setting tool to lock the insert in place. 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.
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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