OEM Key Locking Insert: Heavy Wall, 2 Keys, #6-32 Int Thrd Sz, 1/4"-20 Ext Thrd Sz
The APPROVED VENDOR Key Locking Insert is a heavy-wall, mil-spec insert (MIL-I-45914A / MS51831) with a #6-32 internal thread size and 1/4"-20 external thread size, supplied in a 10-pack. It features 2 keys, plain…
SKU 3G-OTH-531746
Also listed as: 217077291 · 217 077291
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, mil-spec insert (MIL-I-45914A / MS51831) with a #6-32 internal thread size and 1/4"-20 external thread size, supplied in a 10-pack. It features 2 keys, plain finish, coarse thread, 303 stainless steel construction, and external/internal thread fits of 2A and 3B respectively.
Frequently Asked Questions
What is a key locking insert used for?
A key locking insert is used to repair or reinforce tapped holes in metal, providing a strong, reusable thread. The APPROVED VENDOR heavy-wall insert meets MIL-I-45914A (MS51831) for aerospace and defense applications, securing fasteners with its 2 keys to prevent rotation under vibration.
What are the specifications of the APPROVED VENDOR key locking insert?
This heavy-wall insert has a #6-32 internal thread size and 1/4"-20 external thread size, with 2A external and 3B internal thread fits. It is made of 303 stainless steel, plain finish, coarse thread, and complies with MIL-I-45914A (MS51831). Supplied in a 10-pack.
Where to buy APPROVED VENDOR key locking inserts worldwide?
3G Electric supplies APPROVED VENDOR key locking inserts worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine mil-spec inserts like the 217-077291 to any location, ensuring compliance with your procurement requirements.
How to install a key locking insert?
Installation requires drilling to the specified tap size (1/4"-20), tapping the hole, then driving the insert using a compatible tool until the keys engage. The 2 keys lock the insert in place, preventing rotation. Always follow MIL-I-45914A guidelines for torque and depth to ensure a secure fit.
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.