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APPROVED VENDOR Key Locking Insert: Heavy Wall, 4 Keys, 1"-12 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"-12 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"-12 internal thread size, and 1 3/8"-12 external thread size. Supplied as a plain, 10-pack (MPN 217-077511), it meets…

SKU 3G-OTH-531680

Brand
APPROVED VENDOR
Item
Key Locking Insert: Heavy Wall, 4 Keys, 1"-12 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
217-077511
Type
Plain, 10 PK
Keys
4
Wall Type
Heavy Wall
Ext Thrd Sz
1 3/8"-12
Finish Type
Plain
Int Thrd Sz
1"-12
Thread Type
Coarse
Drill Bit Size
1-19/64 in
Industry Standards
MS51830-105L
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"-12 internal thread size, and 1 3/8"-12 external thread size. Supplied as a plain, 10-pack (MPN 217-077511), it meets MS51830-105L standards, features 18-8 material, and requires a 1-19/64 in drill bit with a 1-3/8"-12 compatible tap size.

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 key locking insert repairs or reinforces threaded holes in metal assemblies, especially where vibration could loosen standard threads. It meets mil-spec MS51830-105L and is common in aerospace, defense, and industrial equipment requiring a secure, permanent thread repair.

What are the specifications of the APPROVED VENDOR 217-077511 Key Locking Insert?

This 10-pack insert has a 1"-12 internal thread size and 1 3/8"-12 external thread size, with 4 keys and a plain finish. It is made from 18-8 stainless steel, requires a 1-19/64 in drill bit and 1-3/8"-12 tap, and meets MS51830-105L standards.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 217-077511 10-pack or other mil-spec thread repair inserts.

How to install a heavy-wall key locking insert?

Drill the hole to 1-19/64 in, tap it with a 1-3/8"-12 tap, then thread the insert in using a key locking insert tool. The 4 keys lock into the parent material to prevent rotation. Follow MS51830-105L guidelines for torque and final 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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