1/8 inch x Close Black Steel Nipple

1/8" x Close Black Steel Nipple – Threaded Fitting for General Piping Systems

The 1/8" x Close Black Steel Nipple is a straight, close-pattern pipe fitting used to connect two female threaded pipe ends in a piping system. Manufactured from black steel in accordance with ASTM standards, it is suitable for use in applications including air, oil, steam, and natural gas systems that do not require corrosion-resistant materials.

This nipple is designed for use with other threaded black malleable iron or black steel pipe components. Its close length means there is minimal space between threads, resulting in a compact connection. Threads are tapered per ANSI B1.20.1 for leak resistance when installed with appropriate sealing compounds or tape.

Product Features

• ✅ Material: Black Steel (carbon steel with black oxide finish)
• ✅ Nominal Size: 1/8 inch NPT
• ✅ Length: Close (approx. 7/8" overall, thread-to-thread)
• ✅ Connection Type: NPT Male Thread x NPT Male Thread
• ✅ Compliance: Threads meet ANSI/ASME B1.20.1 pipe thread standards

Applications

Commonly used in:

• Gas distribution lines (non-corrosive environments)
• Low-pressure steam systems
• Compressed air systems
• Closed-loop heating systems

Installation Notes

This fitting should be installed using appropriate thread sealants or PTFE tape. Due to its short length, ensure alignment and full thread engagement to maintain mechanical strength and seal integrity. Not intended for potable water systems or corrosive service environments.

Material Insight

Black steel is commonly specified for use where corrosion resistance is not a requirement, and painting or coating is planned. It provides good mechanical strength and is cost-effective for internal system use.