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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 5/16"-18 Int Thrd Sz, 1/2"-13 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 5/16"-18 Int Thrd Sz, 1/2"-13 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, inch-system Mil. Spec. insert with 4 keys, 5/16"-18 internal thread size, and 1/2"-13 external thread size. Supplied in a plain finish, 10-pack, it meets…

SKU 3G-OTH-531638

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, 5/16"-18 Int Thrd Sz, 1/2"-13 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077303
Type
Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Ext Thrd Sz
1/2"-13
Finish Type
Plain
Int Thrd Sz
5/16"-18
Thread Type
Coarse
Industry Standards
MS51832-209
Compatible Tap Size
1/2"-13
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, 5/16"-18 internal thread size, and 1/2"-13 external thread size. Supplied in a plain finish, 10-pack, it meets MS51832-209 standards and is made from 18-8 material with 2A external and 3B internal thread fits.

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 an APPROVED VENDOR Key Locking Insert used for?

This heavy-wall insert with 4 keys is used to repair or reinforce tapped threads in metal assemblies, meeting Mil. Spec. MS51832-209. It provides a durable 18-8 stainless steel thread for 5/16"-18 internal and 1/2"-13 external connections in aerospace, defense, and industrial equipment.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-077303?

This 10-pack insert has a 5/16"-18 internal thread size, 1/2"-13 external thread size, heavy wall, plain finish, and 4 keys. It meets MS51832-209 standards, is made from 18-8 stainless steel, and has 2A external and 3B internal thread fits in the inch system.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies the APPROVED VENDOR Key Locking Insert 217-077303 worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this Mil. Spec. insert.

How to install a key locking insert?

Installation requires tapping the hole to the compatible tap size (1/2"-13 for this insert), then driving the insert using a key locking insert tool until it is flush or slightly below the surface. The 4 keys lock into the parent material to prevent rotation. Follow standard thread repair practices.

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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