E-Z LOK Self Locking Thread Insert: Heavy Wall, 1/2"-13 Int Thrd Sz, 3/4"-10 Ext Thrd Sz
The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a 1/2"-13 internal thread and a 3/4"-10 external thread, supplied in a 5-pack (MPN 303-8-PK5). It features coarse threads, a 2A external…
SKU 3G-OTH-534203
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Product Description
The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a 1/2"-13 internal thread and a 3/4"-10 external thread, supplied in a 5-pack (MPN 303-8-PK5). It features coarse threads, a 2A external thread fit, a 2B internal thread fit, and is compatible with a 3/4"-10 tap.
Frequently Asked Questions
What is an E-Z LOK Self Locking Thread Insert used for?
E-Z LOK Self Locking Thread Inserts repair or reinforce stripped or worn internal threads in metal assemblies. The heavy-wall design provides extra strength for demanding industrial applications across machining, power transmission, and material handling equipment. 3G Electric supplies these inserts globally.
What are the specifications of the E-Z LOK 303-8-PK5 thread insert?
The E-Z LOK 303-8-PK5 is a heavy-wall, inch-system insert with a 1/2"-13 internal thread and a 3/4"-10 external thread. It has coarse threads, a 2A external thread fit, a 2B internal thread fit, and is compatible with a 3/4"-10 tap. Supplied in a 5-pack.
Where to buy E-Z LOK thread inserts worldwide?
3G Electric supplies E-Z LOK Self Locking Thread Inserts to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact our team for a quote on the 303-8-PK5 or other heavy-wall inserts. We source genuine industrial components across 14 departments.
How to install an E-Z LOK heavy wall thread insert?
Installation requires tapping the hole to the specified compatible tap size (3/4"-10 for this insert), then driving the insert into the tapped hole using a standard installation tool. The self-locking feature engages upon insertion. Always follow the manufacturer's instructions for torque and depth to ensure a secure fit.
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.









