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E-Z LOK 303-4-PK5 Heavy Wall Self-Locking Thread Insert - Heavy Wall Self-Locking Inserts
E-Z LOKHeavy Wall Self-Locking Inserts

E-Z LOK 303-4-PK5 Heavy Wall Self-Locking Thread Insert

The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a 1/4"-20 internal thread size and a 7/16"-14 external thread size, compatible with a 7/16"-14 tap. It features coarse threads, external…

SKU 3G-OTH-534105

Also listed as: 3034PK5 · 303 4 PK5

Brand
E-Z LOK
Item
303-4-PK5 Heavy Wall Self-Locking Thread Insert
Part Number
303-4-PK5
Category
Heavy Wall Self-Locking Inserts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

E-Z LOK
Manufacturer Part Number
303-4-PK5
Type
5 PK
Wall Type
Heavy Wall
Ext Thrd Sz
7/16"-14
Int Thrd Sz
1/4"-20
Thread Type
Coarse
Compatible Tap Size
7/16"-14
External Thread Fit
2A
Internal Thread Fit
2B
System of Measurement
Inch

Technical Documents

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

Product Description

The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a 1/4"-20 internal thread size and a 7/16"-14 external thread size, compatible with a 7/16"-14 tap. It features coarse threads, external thread fit 2A, internal thread fit 2B, and is supplied in a 5-pack (MPN 303-4-PK5).

Frequently Asked Questions

What is the E-Z LOK 303-4-PK5 thread insert used for?

The E-Z LOK 303-4-PK5 is a heavy-wall self-locking thread insert used to repair or reinforce tapped holes in metal, plastic, or wood. It provides a durable 1/4"-20 internal thread with a 7/16"-14 external thread, ideal for industrial applications requiring vibration resistance and load distribution.

What are the specifications of the E-Z LOK 303-4-PK5 thread insert?

The E-Z LOK 303-4-PK5 is a 5-pack of heavy-wall inch-system inserts. Internal thread size is 1/4"-20 with 2B fit; external thread size is 7/16"-14 with 2A fit. Compatible tap size is 7/16"-14. Thread type is coarse. Manufacturer part number is 303-4-PK5.

Where to buy E-Z LOK 303-4-PK5 thread inserts worldwide?

3G Electric supplies E-Z LOK 303-4-PK5 thread 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 5-pack of heavy-wall self-locking inserts.

How to install an E-Z LOK heavy-wall thread insert?

To install the E-Z LOK 303-4-PK5, drill a hole to the recommended size, tap it with a 7/16"-14 tap, then thread the insert into the tapped hole using a standard installation tool. The self-locking feature secures the insert without adhesives. Follow generic best practices for thread insert installation.

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E-Z LOK Products

3G Electric supplies E-Z LOK heavy wall self-locking inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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