threaded TPN Series Square-Head Plugs TPN Series plugs are ideal for low-pressure testing and in-house handling. The square-head design enables easy installation. These plugs protect threaded ports from damage, contamination and moisture. Resistant to oil and heat up to 250° F. Not intended for permanent applications. * Fits NPT threads * Easy to use Material: High-Density Polyethylene Color: Black TPN-F Series Square-Head with Flange Plugs TPN-F Series plugs protect the circumference of the port while simultaneously protecting the threads from damage, contaminants and moisture. These square-head design plugs are commonly used for low-pressure testing and in-plant processing and combat oil and heat up to 250° F. Not intended for permanent applications. D F B 30˚ * Fits NPT threads C * Easy to use Material: High-Density Polyethylene Color: Black TPSD Series Threaded Plugs with Square Drive TPSD Series threaded plugs can be used for a wide variety of applications. These durable, general purpose plugs are high strength and machine threaded. Each plug is serrated for easy finger tightening with a recessed square-head drive for ease of installation and removal. A Material: Polypropylene Color: Red B 136 C * For other material and color options, contact customer service.