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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 13/16"-16 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 13/16"-16 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 1/2"-13 internal thread size, a 13/16"-16 external thread size, and a…

SKU 3G-OTH-531657

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/2"-13 Int Thrd Sz, 13/16"-16 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077338
Type
10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
13/16"-16
Finish Type
Plain
Int Thrd Sz
1/2"-13
Thread Type
Coarse
Industry Standards
NAS1394C3L
Compatible Tap Size
13/16"-16
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 1/2"-13 internal thread size, a 13/16"-16 external thread size, and a plain finish. This inch-system insert is made from 18-8 material, meets NAS1394C3L standards, and has a 2A external thread fit and 3B internal thread fit.

Frequently Asked Questions

What is an APPROVED VENDOR Key Locking Insert used for?

This Mil. Spec. key-locking insert repairs or strengthens threads in metal assemblies, typically in aerospace, defense, and heavy machinery. The extra heavy wall and 4 keys provide high pull-out resistance for demanding applications.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-077338?

This 10-pack insert has a 1/2"-13 internal thread and 13/16"-16 external thread, both coarse. It is made from 18-8 stainless steel, meets NAS1394C3L, and has a 2A external / 3B internal thread fit. Wall type is extra heavy.

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 site. Contact us for pricing and lead time on this NAS1394C3L insert.

How to install a key locking insert?

Installation requires a compatible tap (13/16"-16 for this insert), a key-locking insert tool, and a staking tool to set the keys. Follow standard Mil. Spec. procedures: tap the hole, thread the insert, then stake the keys into the parent material.

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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