We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

OEM Key Locking Insert: Extra Heavy Wall, 4 Keys, 9/16"-18 Int Thrd Sz, 7/8"-14 Ext Thrd Sz - Mil. Spec. Key-Locking Inserts
OEMMil. Spec. Key-Locking Inserts

OEM Key Locking Insert: Extra Heavy Wall, 4 Keys, 9/16"-18 Int Thrd Sz, 7/8"-14 Ext Thrd Sz

The APPROVED VENDOR Key Locking Insert is a Mil. Spec. key-locking insert with an Extra Heavy Wall, supplied in a 10 PK. It features 4 keys, a 9/16"-18 internal thread size, a 7/8"-14 external thread size, and a…

SKU 3G-OTH-531663

Also listed as: 217077539 · 217 077539

Brand
OEM
Item
Key Locking Insert: Extra Heavy Wall, 4 Keys, 9/16"-18 Int Thrd Sz, 7/8"-14 Ext Thrd Sz
Category
Mil. Spec. Key-Locking Inserts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

OEM
Manufacturer Part Number
217-077539
Type
10 PK
Keys
4
Wall Type
Extra Heavy Wall
Ext Thrd Sz
7/8"-14
Finish Type
Plain
Int Thrd Sz
9/16"-18
Thread Type
Coarse
Industry Standards
MS51832-207L
Compatible Tap Size
7/8"-14
External Thread Fit
2A
Internal Thread Fit
3B
Material Grade/Class
18-8
System of Measurement
Inch

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

OEM 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, supplied in a 10 PK. It features 4 keys, a 9/16"-18 internal thread size, a 7/8"-14 external thread size, and a plain finish. Made from 18-8 material with a coarse thread type, it meets industry standard MS51832-207L and is compatible with a 7/8"-14 tap size, with external thread fit 2A and internal thread fit 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 strengthens threads in metal assemblies, typically in aerospace, defense, and industrial equipment. The extra heavy wall and 4 keys provide high pull-out resistance. 3G Electric supplies this insert across 14 industrial departments, including machining and instrumentation.

What are the specifications of the APPROVED VENDOR Key Locking Insert 217-077539?

This insert has a 9/16"-18 internal thread and 7/8"-14 external thread, with an extra heavy wall and 4 keys. It meets MS51832-207L, is made from 18-8 stainless steel, and has a plain finish. External thread fit is 2A; internal thread fit is 3B. Supplied in a 10-pack.

Where to buy APPROVED VENDOR Key Locking Inserts worldwide?

3G Electric supplies APPROVED VENDOR key locking inserts to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine parts across 14 departments, including fasteners and machining, ensuring you get the right Mil. Spec. insert.

How to install an APPROVED VENDOR Key Locking Insert?

Installation requires a compatible tap (7/8"-14), a key-locking insert driver, and a tang break-off tool. Thread the insert into the tapped hole until it sits slightly below the surface, then drive the keys into the parent material using the key-locking tool. Break off the tang for a flush finish. Always follow MS51832-207L guidelines.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products