1-1/2" Black Iron Locknut

Product Name: Black Iron Locknut
Material: Malleable Iron (Black Finish)
Coating: Black oxide finish to resist rust during storage/handling (not intended for long-term corrosion resistance)
Standards:

• Conforms to ASTM A197 / A153

• UL / FM Approved for certain applications (depending on size and use)

Sizes Available: 1/8" – 2" (NPT thread sizes)
Thread Type: Tapered NPT female (National Pipe Thread)
Connection: Secures rigid pipe fittings and nipples into threaded openings, prevents loosening due to vibration.

Temperature Range: -20°F to 650°F (-29°C to 343°C)
Pressure Rating: Equal to the pressure rating of the mating fitting or pipe system (commonly Class 150)

Applications:

• Plumbing installations (water, steam, gas, compressed air lines)

• Securing nipples or couplings into outlet boxes or enclosures

• Mechanical, industrial, and OEM piping systems

Features:

• Heavy-duty malleable iron construction for strength

• Chamfered edges for easy threading

• Designed to hold fittings securely in place

• Compatible with black and galvanized pipe fittings