E-Z LOK Self Locking Thread Insert: Heavy Wall, #4-40 Int Thrd Sz, #10-32 Ext Thrd Sz
The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a #4-40 internal thread size and #10-32 external thread size, supplied in a 10-pack. It features a coarse thread type, compatible tap…
SKU 3G-OTH-534180
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Product Description
The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a #4-40 internal thread size and #10-32 external thread size, supplied in a 10-pack. It features a coarse thread type, compatible tap size #10-32, and external/internal thread fits of 2A and 2B respectively. 3G Electric interprets your demand for genuine industrial fasteners and sources this OEM part (MPN 303-004-PK10) across our 14 departments, with specialist expertise in combustion, pumps and controls to ensure the right solution.
Frequently Asked Questions
What is E-Z LOK Self Locking Thread Insert used for?
E-Z LOK Self Locking Thread Inserts repair or reinforce stripped threads in metal or plastic. The heavy-wall design provides extra strength for demanding applications. 3G Electric sources this OEM part (MPN 303-004-PK10) across 14 industrial departments, with specialist expertise in combustion, pumps and controls.
What are the specifications of E-Z LOK 303-004-PK10?
This heavy-wall insert has a #4-40 internal thread size and #10-32 external thread size, coarse thread type, compatible tap size #10-32, external thread fit 2A, internal thread fit 2B, inch system. Supplied in a 10-pack. 3G Electric sources genuine E-Z LOK parts for worldwide delivery.
Where to buy E-Z LOK thread inserts in worldwide?
3G Electric supplies genuine E-Z LOK Self Locking Thread Inserts (MPN 303-004-PK10) to worldwide locations. We handle full logistics and customs clearance as a global industrial solutions provider. Contact us for availability and lead time on this heavy-wall, #4-40 internal thread insert.
How to install E-Z LOK heavy wall thread inserts?
Install E-Z LOK heavy wall inserts by tapping a hole to the specified external thread size (#10-32), then driving the insert into the tapped hole using a standard installation tool. The self-locking feature secures the insert without adhesives. 3G Electric can advise on correct selection for your application.
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.









