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APPROVED VENDOR Key Locking Insert: Heavy Wall, 7/8-"14 Int Thrd Sz, 1 1/4"-12 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

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

The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil-spec insert made from 18-8 stainless steel, supplied in a 10-pack. It features a 7/8"-14 internal thread (3B fit) and a 1 1/4"-12 external thread (2A fit)…

SKU 3G-OTH-531713

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

APPROVED VENDOR
Manufacturer Part Number
217-077510
Type
Stainless Steel, 10 PK
Wall Type
Heavy Wall
Ext Thrd Sz
1 1/4"-12
Finish Type
Plain
Int Thrd Sz
7/8-"14
Thread Type
Coarse
Industry Standards
MS51831-111L
Compatible Tap Size
1-1/4"-12
External Thread Fit
2A
Internal Thread Fit
3B
Internal Thread Size
7/8-"14
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 made from 18-8 stainless steel, supplied in a 10-pack. It features a 7/8"-14 internal thread (3B fit) and a 1 1/4"-12 external thread (2A fit), compatible with a 1-1/4"-12 tap and meeting MS51831-111L standards.

Frequently Asked Questions

What is an APPROVED VENDOR Key Locking Insert used for?

This heavy-wall key locking insert repairs or reinforces tapped holes in metal assemblies, providing a durable 18-8 stainless steel thread. It meets MS51831-111L standards for aerospace, defense, and industrial applications where vibration resistance and thread integrity are critical.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-077510?

This 10-pack insert has a 7/8"-14 internal thread (3B fit) and a 1 1/4"-12 external thread (2A fit). It is made from 18-8 stainless steel with a heavy wall, plain finish, and is compatible with a 1-1/4"-12 tap. It meets MS51831-111L standards.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies and delivers APPROVED VENDOR key locking inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, regardless of location.

How to install a key locking insert like the APPROVED VENDOR MS51831-111L?

Installation requires tapping the hole to the specified compatible tap size (1-1/4"-12), then driving the insert using a key locking tool until it is seated flush. The external keys lock into the parent material to prevent rotation. Follow standard mil-spec insert procedures.

Used in

Common applications for APPROVED VENDOR
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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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