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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, M20-2.50 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, M20-2.50 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, M20-2.50 internal thread size, M30-2.00 external thread size, plain finish, and a 10-pack quantity. It meets Fed Std. H28/21 and…

SKU 3G-OTH-531795

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, M20-2.50 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
217-076373
Type
M20-2.50 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
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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, M20-2.50 internal thread size, M30-2.00 external thread size, plain finish, and a 10-pack quantity. It meets Fed Std. H28/21 and MJ Form standards, with a 28.10 mm drill bit size, M30-2.00 compatible tap size, 2A external thread fit, 3B internal thread fit, and 18-8 material grade.

Frequently Asked Questions

What is a key locking insert used for?

A key locking insert repairs or reinforces stripped threads in metal assemblies. The APPROVED VENDOR heavy-wall version with 4 keys provides high pull-out resistance in demanding applications like aerospace tooling and military equipment, meeting Fed Std. H28/21 and MJ Form standards.

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

This heavy-wall insert has M20-2.50 internal thread size, M30-2.00 external thread size, 4 keys, plain finish, 18-8 material grade, 28.10 mm drill bit size, M30-2.00 compatible tap size, 2A external thread fit, and 3B internal thread fit. It comes in a 10-pack.

Where to buy APPROVED VENDOR key locking inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this M20-2.50 internal thread, M30-2.00 external thread, 10-pack insert.

How to select the correct key locking insert size?

Match the external thread size (M30-2.00) to the parent material's tapped hole, and the internal thread size (M20-2.50) to the bolt you intend to install. Use the specified 28.10 mm drill bit and M30-2.00 tap. The 2A external and 3B internal thread fits ensure proper engagement.

Used in

Common applications for APPROVED VENDOR
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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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