STZ Industries 2-1/2 in MIP to 2-1/2 in MIP Black Steel Nipple, 4 in Long is built for demanding piping projects where a secure, threaded connection matters. This lead-free, black-finished steel nipple provides a reliable bridge between two female-threaded fittings, delivering straightforward alignment and robust performance in a compact 4-inch length.
- Ends: 2-1/2 in MIP on both sides
- Overall length: 4 inches
- Material: Steel
- Finish: Black
- Lead content: Lead-Free
- Maximum pressure: 230 psi
- Maximum temperature: 400°F
- Packaging: Bagged
- Product type: Nipple
Why this two-ended MIP nipple stands out
Two equally threaded 2-1/2 inch MIP ends give you symmetrical, easy-to-align connections for extending or adapting piping runs. The lead-free composition supports safer use in environments where potable-water compatibility matters, while the black steel finish offers durable wear resistance in exposed or utility spaces. At 4 inches, this nipple provides the precise length needed to bridge gaps without adding unnecessary bulk.
Ideal use cases
- Extending a threaded pipe line between two female fittings in plumbing, HVAC, or mechanical rooms
- Creating a short, reliable connector for constrained spaces where longer fittings aren’t feasible
- Rugged, temporary or semi-permanent connections in industrial settings
- Durable, corrosion-resistant line components in outdoor or semi-exposed installations
Installation tips and best practices
- Clean threads before assembly and apply a compatible pipe thread sealant or tape suitable for steel and MIP threads
- Hand-tighten, then snug with a wrench while avoiding overtightening to prevent thread damage
- Verify that the assembly remains within its 230 psi and 400°F ratings for your application
- Test for leaks after installation and re-tighten if necessary
Durability, compliance, and care
Crafted from steel with a black finish, this nipple is designed for longevity in a variety of environments. Its lead-free construction helps meet modern code requirements for potable-water projects. Store in the bag provided to protect threads from debris and corrosion before use.
