L.H. DOTTIE PB350 Conduit Fitting Bushing 3-1/2 in Threaded Thermoplastic Gray

DOTTIE PB350 Conduit Bushing

The DOTTIE PB350 is a 3-1/2 inch threaded conduit fitting bushing made from gray thermoplastic. It is designed for electricians and installers who need to protect cable insulation where conductors pass through a knockout or threaded hub. The non-metallic construction resists corrosion and provides a smooth pulling surface for wire installation. This component suits commercial and residential raceway systems requiring a standard threaded connection.

3-1/2 Inch Threaded Trade Size

The single specification that determines fit is the 3-1/2 inch trade size with threaded ends. This dimension must match the conduit or hub being used; an incorrect trade size will prevent proper assembly and code compliance. The thermoplastic material offers dielectric strength and will not damage conductor jackets during pulling. No other interface or protocol applies to this mechanical fitting.

Thermoplastic Gray Finish Capacity

The gray thermoplastic body handles standard pulling tensions for 3-1/2 inch raceways without cracking or deforming. It runs out when the application demands metallic grounding continuity, high-temperature environments beyond the material rating, or impact resistance exceeding thermoplastic limits. Buyers who need a grounding bushing or a metallic finish for hazardous locations cannot use this part.