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APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/4"-20 Int Thrd Sz, 1/2"-13 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
APPROVED VENDORMil. Spec. Key-Locking Inserts

APPROVED VENDOR Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/4"-20 Int Thrd Sz, 1/2"-13 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 1/4"-20 internal thread size, and a 1/2"-13 external thread size. It is made from 18-8 material…

SKU 3G-OTH-531770

Brand
APPROVED VENDOR
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 1/4"-20 Int Thrd Sz, 1/2"-13 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
217-076334
Type
Plain, 10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
1/2"-13
Finish Type
Plain
Int Thrd Sz
1/4"-20
Thread Type
Coarse
Industry Standards
MS51830-107L
Compatible Tap Size
1/2"-13
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 Mil. Spec. key-locking insert with an Extra Heavy Wall, featuring 4 keys, a 1/4"-20 internal thread size, and a 1/2"-13 external thread size. It is made from 18-8 material, has a Plain finish, and comes in a 10 PK. This inch-system insert meets MS51830-107L standards, with a compatible tap size of 1/2"-13, external thread fit of 2A, and internal thread fit of 3B.

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 Mil. Spec. key-locking insert repairs or reinforces tapped holes in metal assemblies, especially where high pull-out strength is needed. The extra heavy wall and 4 keys lock it securely in place, making it suitable for aerospace, defense, and heavy machinery applications that demand MS51830-107L compliance.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-076334?

This insert has a 1/4"-20 internal thread and 1/2"-13 external thread, with an extra heavy wall and 4 keys. It is made from 18-8 stainless steel, plain finish, and meets MS51830-107L. The external thread fit is 2A, internal fit is 3B, and compatible tap size is 1/2"-13. Sold in a 10-pack.

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 these Mil. Spec. inserts reach your facility, whether for aerospace maintenance or defense contracting.

How to install an APPROVED VENDOR Key Locking Insert?

Installation requires tapping the hole to the compatible tap size (1/2"-13), then threading the insert in using a key-locking insert driver. The 4 keys must be set into the pre-cut keyways to prevent rotation. Use thread locking compound for vibration resistance. Follow MS51830-107L guidelines for torque values.

Used in

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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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