Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

E-Z-LOK Thread Insert Kit: 1/4"-28 Int Thrd Sz, 1/2 in Overall Lg, 29/64 in Dia - Knife-Thread Insert Installation Kits
E-Z-LOKKnife-Thread Insert Installation Kits

E-Z-LOK Thread Insert Kit: 1/4"-28 Int Thrd Sz, 1/2 in Overall Lg, 29/64 in Dia

The E-Z-LOK Knife-Thread Insert Installation Kit (SKU 45JZ85, MPN EZ-400-428) is a brass, plain thread insert kit with a 1/4"-28 internal thread size, 1/2" overall length, 29/64" diameter, and 25/64" key…

SKU 3G-OTH-708917

Brand
E-Z-LOK
Item
Thread Insert Kit: 1/4"-28 Int Thrd Sz, 1/2 in Overall Lg, 29/64 in Dia
Category
Knife-Thread Insert Installation Kits
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

Technical Specifications

E-Z-LOK
Manufacturer Part Number
EZ-400-428
Type
Brass, Plain, Brass, Plain
Dia
29/64 in
Overall Lg
1/2 in
View Full Spec Sheet

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

E-Z-LOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The E-Z-LOK Knife-Thread Insert Installation Kit (SKU 45JZ85, MPN EZ-400-428) is a brass, plain thread insert kit with a 1/4"-28 internal thread size, 1/2" overall length, 29/64" diameter, and 25/64" key specification, featuring fine thread pitch. 3G Electric interprets customer demand and delivers this genuine industrial solution across 14 departments—and far more—with specialist depth in combustion, pumps, and controls as an authorized distributor for brands like E-Z-LOK, Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump, and FBR.

Frequently Asked Questions

What is the E-Z-LOK Knife-Thread Insert Installation Kit used for?

This kit is used to install knife-thread inserts in metal or plastic substrates, providing strong, reusable threads for fasteners. It is common in automotive, aerospace, and general manufacturing repair and assembly applications where thread integrity is critical.

What are the specifications of the E-Z-LOK thread insert kit EZ-400-428?

The kit includes brass, plain inserts with a 1/4"-28 internal thread size, 1/2" overall length, 29/64" diameter, and 25/64" key dimension. The thread pitch is fine. The manufacturer part number is EZ-400-428.

Where to buy the E-Z-LOK thread insert kit EZ-400-428 worldwide?

3G Electric supplies and delivers the E-Z-LOK EZ-400-428 thread insert kit worldwide. We handle full logistics and customs clearance, ensuring your order reaches any global destination. Contact us for availability and lead time.

How to install an E-Z-LOK knife-thread insert?

Drill a hole to the specified diameter, tap it using the included tap, then use the installation tool to screw the insert flush with or slightly below the surface. For brass inserts, avoid over-torquing. Follow the manufacturer's instructions for best results.

E-Z-LOK Products

3G Electric supplies E-Z-LOK knife-thread insert installation kits. 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

More from E-Z-LOK

View all E-Z-LOK parts
Thread Insert Kit: 1/4"-20 Int Thrd Sz, 1/2 in Overall Lg, 29/64 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-4). Key specifications — attr867996: 25/64 in; attr868031: Coarse.
E-Z-LOK
Thread Insert Kit: 1/4"-20 Int Thrd Sz, 1/2 in Overall Lg, 29/64 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-4). Key specifications — attr867996: 25/64 in; attr868031: Coarse.
Thread Insert Kit: 3/8"-24 Int Thrd Sz, 5/8 in Overall Lg, 19/32 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-624). Key specifications — attr867996: 33/64 in; attr868031: Fine.
E-Z-LOK
Thread Insert Kit: 3/8"-24 Int Thrd Sz, 5/8 in Overall Lg, 19/32 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-624). Key specifications — attr867996: 33/64 in; attr868031: Fine.
Thread Insert Kit: 5/16"-24 Int Thrd Sz, 5/8 in Overall Lg, 19/32 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-524). Key specifications — attr867996: 33/64 in; attr868031: Fine.
E-Z-LOK
Thread Insert Kit: 5/16"-24 Int Thrd Sz, 5/8 in Overall Lg, 19/32 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-524). Key specifications — attr867996: 33/64 in; attr868031: Fine.
Thread Insert Kit: M5-0.80 Int Thrd Sz, 12.7 mm Overall Lg, 11.5062 mm Dia, Brass, Plain, Brass (MPN EZ-400-M5). Key specifications — attr867996: 25/64 in; attr868031: Coarse.
E-Z-LOK
Thread Insert Kit: M5-0.80 Int Thrd Sz, 12.7 mm Overall Lg, 11.5062 mm Dia, Brass, Plain, Brass (MPN EZ-400-M5). Key specifications — attr867996: 25/64 in; attr868031: Coarse.
Thread Insert Kit: #8-32 Int Thrd Sz, 3/8 in Overall Lg, 21/64 in Dia, Stainless Steel, Plain, Plain (MPN EZ-400-008-CR). Key specifications — attr867996: 17/64 in; attr868031: Coarse.
E-Z-LOK
Thread Insert Kit: #8-32 Int Thrd Sz, 3/8 in Overall Lg, 21/64 in Dia, Stainless Steel, Plain, Plain (MPN EZ-400-008-CR). Key specifications — attr867996: 17/64 in; attr868031: Coarse.
Thread Insert Kit: 5/16"-18 Int Thrd Sz, 5/8 in Overall Lg, 19/32 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-5). Key specifications — attr867996: 33/64 in; attr868031: Coarse.
E-Z-LOK
Thread Insert Kit: 5/16"-18 Int Thrd Sz, 5/8 in Overall Lg, 19/32 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-5). Key specifications — attr867996: 33/64 in; attr868031: Coarse.
Thread Insert Kit: #8-32 Int Thrd Sz, 3/8 in Overall Lg, 21/64 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-008). Key specifications — attr867996: 17/64 in; attr868031: Coarse.
E-Z-LOK
Thread Insert Kit: #8-32 Int Thrd Sz, 3/8 in Overall Lg, 21/64 in Dia, Brass, Plain, Brass, Plain (MPN EZ-400-008). Key specifications — attr867996: 17/64 in; attr868031: Coarse.
Thread Insert Kit: M4-0.70 Int Thrd Sz, 9.652 mm Overall Lg, 8.3312 mm Dia, Brass, Plain, Brass (MPN EZ-400-M4). Key specifications — attr867996: 17/64 in; attr868031: Coarse.
E-Z-LOK
Thread Insert Kit: M4-0.70 Int Thrd Sz, 9.652 mm Overall Lg, 8.3312 mm Dia, Brass, Plain, Brass (MPN EZ-400-M4). Key specifications — attr867996: 17/64 in; attr868031: Coarse.