

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The BMI USA 4120 is a lead-free brass threaded nipple designed for use in plumbing and fluid-handling systems where safe, reliable connections are required. Constructed from solid brass with a red finish, this nipple measures 1/8 inch in diameter and 2 inches in length, making it well-suited for tight-space installations and low-volume flow applications. Its threaded ends allow for straightforward assembly into standard fittings and valves. Lead-free construction meets modern potable water safety requirements, making it appropriate for use in drinking water supply lines and related plumbing systems.
This nipple is commonly installed in residential and light commercial plumbing systems where 1/8-inch threaded connections are required. Typical applications include water supply lines, pressure gauge connections, boiler trim, and compressed air fittings. Its compact 2-inch length suits close-coupled fitting arrangements where minimal pipe extension is needed between threaded components.
Designed as an OEM-style replacement or direct-fit nipple for standard 1/8-inch threaded plumbing fittings and valves in residential and light commercial systems.
Installation is performed by a licensed plumber or qualified tradesperson. Shut off the water supply and relieve system pressure before making or breaking any threaded connections. Apply thread sealant tape or pipe compound to male threads before assembly. Tighten connections using appropriate pipe wrenches; avoid overtightening, which can crack brass fittings. Ensure installation complies with applicable local plumbing codes and IPC standards.
Thanks for subscribing!
This email has been registered!