?Dernord stainless steel 304 cast pipe fitting with female National Pipe Taper (NPT) threads locking two fittings into place for stability and reduced vibrations.
From the Manufacturer
Dernord A lock nut which has NPT threads for creating tighter seals than straight threads is used for fastening to a bolt when mechanically joining materials together and preventing loosening from vibration or back off. The hexagonal shape provides increased leverage for use with a wrench during installation and disassembly.
Item Weight:0.55 ounces
Male National Pipe Taper (NPT) threads on male threaded pipes and fittings
Made of stainless steel 304 for better strength
Preventing?rust?processes and for the whole body
Higher corrosion resistance than the 302 grade stainless steel
Keep stable and reducing vibrations