Mueller Streamline 583-000r Black Steel Close Nipple 1/2 Inch

Product Description

The MUELLER STREAMLINE 583-000r is a close-pattern black steel nipple fitting designed for threaded pipe connections in plumbing, gas, steam, and OEM piping systems. Built to Schedule 40 standard wall thickness, this nipple measures 1/2 inch on both ends and has an overall length of 1.125 inches. Both ends are male threaded, conforming to ANSI/ASME B1.20.1 thread standards. The black finish is applied over welded steel construction that meets ASTM A733/A53 material specifications. Licensed plumbers, pipefitters, and mechanical contractors install this type of fitting when a zero-clearance threaded connection is required between two female-threaded fittings or valves.

This close nipple is suited for residential and commercial applications wherever 1/2-inch black steel pipe is used. Common install scenarios include natural gas supply lines, steam heating distribution, oil service piping, and OEM equipment assemblies. The fitting ships in inner packs of 11 units, making it practical for contractors stocking a service van or completing multi-connection rough-in work. Its NAFTA-compliant sourcing meets procurement requirements on relevant projects.

Key Features

• Close-pattern nipple allows direct fitting-to-fitting connection with no exposed pipe length
• Schedule 40 standard wall thickness per ASTM A733/A53 material specification
• ANSI/ASME B1.20.1 compliant male threaded connections on both ends
• Black steel finish suitable for gas, steam, oil, and plumbing service
• Welded construction for consistent wall integrity throughout the fitting
• Packaged 11 units per inner pack for efficient contractor restocking

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1/2-inch Schedule 40 black steel threaded piping systems used in plumbing, gas, oil, and steam applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Plumbing Code, or the International Fuel Gas Code where gas service is involved. Shut off and depressurize the line before making or breaking any threaded connection. Apply an approved pipe thread sealant or PTFE tape rated for the intended service medium before threading the fitting. Do not over-tighten threaded connections, as steel nipples can crack female fittings if excessive torque is applied without proper thread engagement.

Technical Specifications

• Size: 1/2 inch
• Overall Length: 1.125 inches
• Schedule: 40 S
• Wall Thickness: Standard
• End Connection: Male Threaded x Male Threaded
• Material: Steel
• Material Specification: ASTM A733/A53
• Process: Welded
• Finish: Black
• Application: Plumbing, OEM, Oil, Gas, Steam
• Applicable Standard: ANSI/ASME B1.20.1, NAFTA
• Packaging Quantity: 11 per inner pack
• Weight: 2.747 pounds

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: 583-000r