Blue 4" Polypropylene Male Safety Bump Plug Female Threads_NH NH/NST is common in the Compatible part number DMH6045F 36R44N Swivel / Rigid_Rigid Female Model:3132 (6.0 TPI x 3.290 OD)

NH/NST is common in the fire service

Type "D" stainless steel 3 inch female camlock (Cam & Groove) coupler to 3 inch female NPT threads

2 1/2 inch is more common than 3 inch hoses

Global Jump Size type "C" aluminum 4 inch female camlock (Cam & Groove) coupler to 3 inch hose shank

50PF100RD = HFX50X100R50S or RC50-450R-100-STZ

Blue 4" Polypropylene Male Safety Bump Plug Female Threads_NH NH NST is common in the Compatible part number DMH6045F 36R44N Swivel Rigid_Rigid Female Model:3132 (6.0 TPI x 3.290 OD) NH NST is common in the fire service Type "D" stainless steel 3 inch female camlock (Cam & Groove) coupler to 3 inch female NPT threads