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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M20-1.50 Int Thrd Sz, M30-2.00 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M20-1.50 Int Thrd Sz, M30-2.00 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil. spec. insert with 4 keys, M20-1.50 internal thread size and M30-2.00 external thread size, plain finish, in a 10-pack. It meets Fed Std. H28/21 and MJ Form…

SKU 3G-OTH-531769

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, M20-1.50 Int Thrd Sz, M30-2.00 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077573
Type
M20-1.50 Int Thrd Sz, M30-2.00 Ext Thrd Sz, Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Finish Type
Plain
Thread Type
Coarse
Drill Bit Size
28.10 mm
Industry Standards
Fed Std. H28/21, MJ Form
Compatible Tap Size
M30-2.00
External Thread Fit
2A
Internal Thread Fit
3B
External Thread Size
M30-2.00
Material Grade/Class
18-8
System of Measurement
Metric
View Full Spec Sheet

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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, M20-1.50 internal thread size and M30-2.00 external thread size, plain finish, in a 10-pack. It meets Fed Std. H28/21 and MJ Form standards, with a 28.10 mm drill bit size, compatible M30-2.00 tap size, 2A external and 3B internal thread fits, and is made from 18-8 material.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert repairs or reinforces tapped threads in metal, preventing loosening under vibration. The APPROVED VENDOR heavy-wall, 4-key insert with M20-1.50 internal and M30-2.00 external threads suits aerospace, defense, and industrial applications requiring mil. spec. reliability.

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

This heavy-wall insert has M20-1.50 internal and M30-2.00 external threads, 4 keys, plain finish, 18-8 material, 28.10 mm drill bit size, compatible M30-2.00 tap, 2A external and 3B internal thread fits, meeting Fed Std. H28/21 and MJ Form standards.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts worldwide, handling full logistics and customs clearance. We source genuine mil. spec. inserts like the 217-077573 10-pack and deliver to global industrial facilities. Contact us for availability and lead time.

How to install a key locking insert?

Drill a 28.10 mm hole, tap with an M30-2.00 tap, then thread the insert using a compatible installation tool until the keys engage. Ensure the external thread fit is 2A and internal fit is 3B for proper locking. Follow mil. spec. guidelines for torque and inspection.

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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