Grainger Cap: Cap, 3/4 in, NPT Threaded, Brass
SKU 3G-OTH-477295
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Frequently Asked Questions
What is a 3/4 in NPT threaded brass cap used for?
A 3/4 in NPT threaded brass cap seals the end of a male-threaded pipe in high-pressure fluid or gas systems. It is commonly used in industrial plumbing, hydraulic lines, and pneumatic circuits to block flow temporarily or permanently, ensuring system integrity during maintenance or isolation.
What are the specifications of the APPROVED VENDOR 6AYZ6 cap?
The APPROVED VENDOR 6AYZ6 cap has a 3/4 in NPT thread, is made of brass, and is designed for high-pressure pipe fitting applications. Brass construction provides corrosion resistance and durability in demanding industrial environments. The part number is 6AYZ6.
Where to buy a 3/4 in NPT brass cap worldwide?
3G Electric supplies the APPROVED VENDOR 6AYZ6 3/4 in NPT brass cap to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time; we source genuine industrial fittings across 14 departments.
How to install a 3/4 in NPT threaded brass cap?
Clean the male pipe threads and apply a compatible thread sealant or PTFE tape. Hand-tighten the cap onto the pipe, then use a wrench for a final quarter-turn to achieve a leak-free seal. Avoid overtightening to prevent thread damage. Always depressurize the system before installation.
Grainger Products
3G Electric supplies Grainger threaded high-pressure pipe fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

