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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 1"-8 Int Thrd Sz, 1 1/2"-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, 1"-8 Int Thrd Sz, 1 1/2"-12 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a Mil. Spec. key-locking insert with an Extra Heavy Wall, featuring 4 keys, a 1"-8 internal thread size, and a 1 1/2"-12 external thread size. It is supplied as a plain…

SKU 3G-OTH-531679

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 1"-8 Int Thrd Sz, 1 1/2"-12 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-077343
Type
Plain, 10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
1 1/2"-12
Finish Type
Plain
Int Thrd Sz
1"-8
Thread Type
Coarse
Drill Bit Size
1-27/64 in
Industry Standards
NAS1394C8L
Compatible Tap Size
1-1/2"-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, featuring 4 keys, a 1"-8 internal thread size, and a 1 1/2"-12 external thread size. It is supplied as a plain, 10-pack, meets NAS1394C8L standards, and is made from 18-8 material with 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 tapped holes in metal assemblies. The extra heavy wall and four keys lock it in place, preventing rotation under vibration. It is commonly used in aerospace, defense, and heavy machinery applications where a reliable, reusable thread is required.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-077343?

This insert has a 1"-8 internal thread and 1 1/2"-12 external thread, with an extra heavy wall. It is made from 18-8 stainless steel, meets NAS1394C8L standards, and requires a 1-27/64 in drill bit and 1-1/2"-12 tap. External thread fit is 2A; internal is 3B.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies and delivers APPROVED VENDOR key locking inserts worldwide. As a global industrial sourcing partner, we handle full logistics and customs clearance to ensure your order arrives at your facility. Contact us for pricing and lead time on this NAS1394C8L-compliant insert.

How to install an APPROVED VENDOR key locking insert?

Drill the hole to 1-27/64 in, tap it to 1-1/2"-12 thread, then thread the insert in using a compatible installation tool. The four keys lock into the parent material to prevent rotation. Use a tang break-off tool if required. Follow standard Mil. Spec. installation practices for best results.

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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