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APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, #10-32 Int Thrd Sz, 5/16"-18 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Thin Wall, 4 Keys, #10-32 Int Thrd Sz, 5/16"-18 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a thin-wall, mil-spec insert with 4 keys, #10-32 internal thread size, and 5/16"-18 external thread size. It meets MS51832-105 standards, features 18-8 material, 2A external…

SKU 3G-OTH-531627

Brand
APPROVED VENDOR
Item
Key Locking Insert: Thin Wall, 4 Keys, #10-32 Int Thrd Sz, 5/16"-18 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077521
Type
#10-32 Int Thrd Sz, Plain, Plain, 10 PK
Keys
4
Wall Type
Thin Wall
Ext Thrd Sz
5/16"-18
Finish Type
Plain
Thread Type
Coarse
Industry Standards
MS51832-105
Compatible Tap Size
5/16"-18
External Thread Fit
2A
Internal Thread Fit
3B
Material Grade/Class
18-8
System of Measurement
Inch
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 thin-wall, mil-spec insert with 4 keys, #10-32 internal thread size, and 5/16"-18 external thread size. It meets MS51832-105 standards, features 18-8 material, 2A external and 3B internal thread fits, and is supplied in a 10-pack with plain finish.

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 thin-wall key locking insert repairs or strengthens threads in soft materials like aluminum. It meets mil-spec MS51832-105, uses 4 keys to prevent rotation, and is suitable for aerospace, defense, and industrial applications requiring reliable, reusable threads.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-077521?

This insert has a #10-32 internal thread size and 5/16"-18 external thread size, with 2A external and 3B internal thread fits. It is made of 18-8 stainless steel, has a plain finish, and meets MS51832-105 standards. Supplied 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 MS51832-105 compliant insert.

How to install a thin-wall key locking insert?

Installation requires a compatible tap (5/16"-18), a key locking insert driver, and a tang break-off tool. Tap the hole to the external thread size, drive the insert flush, then break off the tang. Use thread locker for vibration resistance.

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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