1-1/4" FNPT SS Threaded Flange

The ZORO SELECT - 4381004430 is a stainless steel threaded flange fitted with internal threads that screw onto male pipe threads, enabling a bolted connection without welding. Its corrosion-resistant properties and threaded design facilitate assembly and disassembly, making it suitable for systems where welding is impractical or where heat must be avoided. This flange is classified as a Class 300 pressure fitting, rated for use at pressures up to 720 psi and steam pressures up to 300 psi. The component provides dimensions as specified for compatibility with 1 1/4-inch nominal pipe size and features a 5 1/4-inch outside diameter with a 3/4-inch flange thickness and a 3 7/8-inch bolt circle diameter. It is designed with four bolt holes of 7/8 inches diameter.

Key Features:

• Made from Forged 304 Stainless Steel, offering corrosion resistance and strength.
• Fitting Schedule/Class: Class 300, suitable for applications specified for Class 300 fittings.
• Connection Type: FNPT (Female National Pipe Thread), indicates connection type as per standard specifications.
• Bolt Circle Diameter: 3 7/8 inches, ensuring proper flange alignment.
• Flange Outside Diameter: 5 1/4 inches, with a flange thickness of 3/4 inches.
• Bolt Holes: Four holes of 7/8 inches diameter, accommodating secure fastening.
• Standards: ASTM-SA182, ANSI B16.5, ASME B1.20.1, conforming to industry standards and specifications.
• Rated for use at pressures up to 720 psi; intended for steam pressures up to 300 psi.
• Nominal Pipe Size: 1 1/4 inches; Overall Length: 1 1/16 inches.