Image Image SHD-Series Schrader Pneumatic Male Threaded Coupler Markets Chemical Processing, Construction, Mining, Steel Processing Product Options Part Number Length Maximum OD Body Size Thread Thread Size Pipe Thread Material 2SHDM2 2.22" 1.12" 1/4" NPT 1/4" NPT / NPTF Aluminum 2SHDM3 2.28" 1.12" 1/4" NPT 3/8" NPT / NPTF Aluminum 4SHDM3 2.55" 1.50" 1/2" NPT 3/8" NPT / NPTF Aluminum 4SHDM4 2.61" 1.50" 1/2" NPT 1/2" NPT / NPTF Aluminum