OEM Key Locking Insert: Heavy Wall, 4 Keys, M10x1.25 Int Thrd Sz, M16x1.5 Ext Thrd Sz
The APPROVED VENDOR Key Locking Insert is a Mil. Spec. heavy-wall insert with 4 keys, M10x1.25 internal thread size, M16x1.5 external thread size, plain finish, and coarse thread type. It meets Fed Std. H28/21 and MJ…
SKU 3G-OTH-531698
Also listed as: 217077567 · 217 077567
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The APPROVED VENDOR Key Locking Insert is a Mil. Spec. heavy-wall insert with 4 keys, M10x1.25 internal thread size, M16x1.5 external thread size, plain finish, and coarse thread type. It meets Fed Std. H28/21 and MJ Form standards, with a compatible tap size of M16x1.5, external thread fit 2A, internal thread fit 3B, and is made from 18-8 material in metric measurement. Supplied in a 10-pack (MPN 217-077567), this insert is part of our curated industrial offering across 14 departments, with specialist depth in fastening and threading solutions.
Frequently Asked Questions
What is a key locking insert used for?
A key locking insert is used to repair or reinforce tapped threads in metal assemblies, providing a durable, reusable thread that resists loosening under vibration. The APPROVED VENDOR heavy-wall insert with 4 keys is ideal for aerospace, defense, and industrial applications requiring Mil. Spec. compliance.
What are the specifications of the APPROVED VENDOR key locking insert?
This heavy-wall insert has M10x1.25 internal thread and M16x1.5 external thread, with 4 keys, plain finish, and coarse thread. It meets Fed Std. H28/21 and MJ Form standards, with external thread fit 2A, internal thread fit 3B, and is made from 18-8 stainless steel in metric measurement.
Where to buy APPROVED VENDOR key locking inserts worldwide?
3G Electric supplies the APPROVED VENDOR key locking insert (MPN 217-077567) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this Mil. Spec. insert to your facility, supporting fastening needs across 14 industrial departments.
How to install a key locking insert?
Installation requires tapping the hole to the compatible tap size (M16x1.5), then driving the insert using a key locking insert tool until it sits below the surface. The 4 keys lock into the parent material to prevent rotation. Always follow the manufacturer's torque and depth guidelines for 18-8 stainless steel inserts.
OEM Products
3G Electric supplies OEM mil. spec. key-locking inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.