OEM Mil. Spec. Key-Locking Insert, Heavy Wall, 7/16"-14 x 5/8"-11, 4
The APPROVED VENDOR Key Locking Insert is a heavy-wall, inch-system Mil. Spec. insert with 4 keys, 7/16"-14 internal thread, 5/8"-11 external thread, and 18-8 material. It meets MS51831-205, comes in a plain finish…
SKU 3G-OTH-531649
Also listed as: 217076305 · 217 076305
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.
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Product Description
The APPROVED VENDOR Key Locking Insert is a heavy-wall, inch-system Mil. Spec. insert with 4 keys, 7/16"-14 internal thread, 5/8"-11 external thread, and 18-8 material. It meets MS51831-205, comes in a plain finish, and is supplied as a 10-pack (MPN 217-076305).
Frequently Asked Questions
What is a key locking insert used for?
A key locking insert repairs or reinforces tapped holes in softer materials. The external keys lock the insert into the parent material, preventing rotation under load. This heavy-wall, 18-8 stainless steel insert meets MS51831-205 and is used in aerospace, military, and industrial applications where thread strength and reliability are critical.
What are the specifications of the APPROVED VENDOR key locking insert?
This heavy-wall insert has a 7/16"-14 internal thread and 5/8"-11 external thread, with 4 keys and a plain finish. It is made from 18-8 stainless steel, meets MS51831-205, and has external thread fit 2A and internal thread fit 3B. Supplied as a 10-pack (MPN 217-076305).
Where to buy APPROVED VENDOR key locking inserts worldwide?
3G Electric supplies APPROVED VENDOR key locking inserts worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this MS51831-205 heavy-wall insert in a 10-pack.
How to install a key locking insert?
Installation requires tapping the hole to the specified external thread size (5/8"-11), then winding the insert in using a compatible installation tool until the keys engage. Ensure the insert is flush or slightly below the surface. Use a key locking insert driver to avoid damaging the internal threads.
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.