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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 1"-8 Int Thrd Sz, 1 3/8"-12 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 1"-8 Int Thrd Sz, 1 3/8"-12 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil-spec insert with 4 keys, 1"-8 internal thread size, and 1 3/8"-12 external thread size. It is made of 18-8 material, plain finish, and comes in a 10-pack…

SKU 3G-OTH-531677

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, 1"-8 Int Thrd Sz, 1 3/8"-12 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076311
Type
Plain, Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Ext Thrd Sz
1 3/8"-12
Finish Type
Plain
Int Thrd Sz
1"-8
Thread Type
Coarse
Drill Bit Size
1-19/64 in
Industry Standards
MS51831-211
Compatible Tap Size
1-3/8"-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, mil-spec insert with 4 keys, 1"-8 internal thread size, and 1 3/8"-12 external thread size. It is made of 18-8 material, plain finish, and comes in a 10-pack. This inch-system insert meets MS51831-211 standards, with a compatible tap size of 1-3/8"-12 and drill bit size of 1-19/64 in, featuring 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 is used to repair or reinforce tapped threads in metal assemblies, particularly in aerospace, defense, and industrial applications. It meets mil-spec MS51831-211 and is made of 18-8 stainless steel for corrosion resistance.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-076311?

This insert has a 1"-8 internal thread size and 1 3/8"-12 external thread size, with 4 keys and a heavy wall. It is made of 18-8 material, plain finish, and meets MS51831-211. Compatible tap size is 1-3/8"-12; drill bit size is 1-19/64 in.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies and delivers APPROVED VENDOR key locking inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, wherever it is located.

How to install an APPROVED VENDOR Key Locking Insert?

Installation requires drilling a hole to the specified drill bit size (1-19/64 in), tapping with the compatible tap (1-3/8"-12), then driving the insert using a key locking tool. The 4 keys lock the insert into the parent material to prevent rotation under load.

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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