Description
This end cap is designed with male threaded connections. Connection 1 has male NPT 3/8 inch threads. It also has an outer hexagon for tightening/loosening. It is an end cap, so it has no output port. It is made out of steel and is galvanic/electrolytic zinc plated for surface protection. At 20 °C (68 °F), it can handle a maximum pressure of 210 bar (3046 psi).
FL1-M series
The FL1-M series consists of fittings with 1 connection port, so they are end caps. G, R, NPT, and metric (standard and conical) threads with a size range of 1/8 inch to 2 inches (metric range from 5 to 14 mm). Designed with either an external hex (to be used with a wrench for example) or an inner hex for an allen wrench. Material options of brass, steel, or stainless steel. They are designed to stop the media flow.

![3/8” NPT Male Zinc plated Steel Closing plug with Outer Hex 210 Bar [2 Pieces]](https://www.toolwarehousedirect.com/wp-content/uploads/2025/09/3-8-8221-npt-male-zinc-plated-steel-closing-plug-with-outer-hex-210-bar-2-pieces-lruknmcn29131-3.webp)
![3/8” NPT Male Zinc plated Steel Closing plug with Outer Hex 210 Bar [2 Pieces] - Image 2](https://www.toolwarehousedirect.com/wp-content/uploads/2025/09/3-8-8221-npt-male-zinc-plated-steel-closing-plug-with-outer-hex-210-bar-2-pieces-lruknmcn29131-0.webp)
![3/8” NPT Male Zinc plated Steel Closing plug with Outer Hex 210 Bar [2 Pieces] - Image 3](https://www.toolwarehousedirect.com/wp-content/uploads/2025/09/3-8-8221-npt-male-zinc-plated-steel-closing-plug-with-outer-hex-210-bar-2-pieces-lruknmcn29131-1.webp)
![3/8” NPT Male Zinc plated Steel Closing plug with Outer Hex 210 Bar [2 Pieces] - Image 4](https://www.toolwarehousedirect.com/wp-content/uploads/2025/09/3-8-8221-npt-male-zinc-plated-steel-closing-plug-with-outer-hex-210-bar-2-pieces-lruknmcn29131-2.webp)




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