Dixon SS17-263 Stainless Steel 303 Industrial Hydraulic Quick-Connect Fitting, Poppet Valve Plug, 1/4" Coupling x 1/4"-18 NPTF Industrial interchange quick connect poppet valve plug to connect directly to a hose with a female NPTF end to connect with a male NPTF threaded connection Industrial interchange poppet valve plug with a female NPTF threaded end Poppet-style shut-off valve prevents fluid loss when disconnected Stainless steel 303 for better machining characteristics than stainless steel 316 with NBR seal for high tensile strength and resistance to abrasion, tear, and compression set Meets dimensional requirements of Series B in ISO 7241-1 which describes interface dimensions and basic performance requirements