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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 7/8"-14 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: Extra Heavy Wall, 4 Keys, 7/8"-14 Int Thrd Sz, 1 3/8"-12 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a Mil. Spec. key-locking insert with an Extra Heavy Wall, supplied in a 10 PK. It features 4 keys, a 7/8"-14 internal thread size, a 1 3/8"-12 external thread size, and is…

SKU 3G-OTH-531675

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 7/8"-14 Int Thrd Sz, 1 3/8"-12 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076542
Type
10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
1 3/8"-12
Finish Type
Plain
Int Thrd Sz
7/8"-14
Thread Type
Coarse
Drill Bit Size
1-19/64 in
Industry Standards
MS51831-205L
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 Mil. Spec. key-locking insert with an Extra Heavy Wall, supplied in a 10 PK. It features 4 keys, a 7/8"-14 internal thread size, a 1 3/8"-12 external thread size, and is made from 18-8 material. This inch-system insert meets MS51831-205L standards, with a compatible tap size of 1-3/8"-12 and a drill bit size of 1-19/64 in.

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 Mil. Spec. key-locking insert with Extra Heavy Wall is used to repair or reinforce tapped threads in metal assemblies, particularly in aerospace, defense, and industrial equipment. The 4 keys lock the insert into the parent material to prevent rotation under vibration or load.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-076542?

This 10-pack insert has an internal thread size of 7/8"-14 and external thread size of 1 3/8"-12. It features an Extra Heavy Wall, 18-8 material, 4 keys, and meets MS51831-205L standards. 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 APPROVED VENDOR Key Locking Inserts to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for this Mil. Spec. insert and thousands of other industrial components across 14 departments.

How to install an APPROVED VENDOR Key Locking Insert?

Installation requires drilling to the specified 1-19/64 in hole size, tapping with a 1 3/8"-12 tap, then threading the insert into the tapped hole. The 4 keys are then set into the parent material using a key-locking tool to prevent rotation. Follow MS51831-205L guidelines for torque.

Used in

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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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