OEM Key Locking Insert: Thin Wall, 4 Keys, 7/16"-14 Int Thrd Sz, 9/16"-12 Ext Thrd Sz
The APPROVED VENDOR Key Locking Insert is a thin-wall, 4-key, plain-finish Mil. Spec. insert (MS51831-104) with a 7/16"-14 internal thread and 9/16"-12 external thread, supplied in a 10-pack. Made from 18-8 material…
SKU 3G-OTH-531748
Also listed as: 217076325 · 217 076325
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 thin-wall, 4-key, plain-finish Mil. Spec. insert (MS51831-104) with a 7/16"-14 internal thread and 9/16"-12 external thread, supplied in a 10-pack. Made from 18-8 material with 2A external and 3B internal thread fits, it is compatible with a 9/16"-12 tap and uses inch measurements.
Frequently Asked Questions
What is an APPROVED VENDOR Key Locking Insert used for?
This thin-wall, 4-key insert repairs or reinforces stripped internal threads in metal assemblies. It meets Mil. Spec. MS51831-104 for aerospace, defense, and industrial applications requiring a secure, vibration-resistant thread. The 18-8 stainless steel construction provides corrosion resistance in demanding environments.
What are the specifications of the APPROVED VENDOR 217-076325 Key Locking Insert?
This 10-pack insert has a 7/16"-14 internal thread and 9/16"-12 external thread with coarse thread type. It features 4 keys, thin wall design, plain finish, 2A external and 3B internal thread fits, and is made from 18-8 material. Compatible tap size is 9/16"-12, meeting MS51831-104 standards.
Where to buy APPROVED VENDOR Key Locking Inserts worldwide?
3G Electric supplies APPROVED VENDOR Key Locking Inserts to global customers. As a sourcing partner, we handle logistics, customs clearance, and delivery worldwide. Contact us for availability and lead time on this MS51831-104 insert in a 10-pack.
How to install an APPROVED VENDOR Key Locking Insert?
Install using a compatible 9/16"-12 tap to prepare the hole, then drive the insert with a key-locking installation tool until the keys engage. Ensure the external thread fit (2A) aligns with the parent material. Follow standard Mil. Spec. MS51831-104 procedures for proper seating and torque.
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.
