Image Image SHD-Series Schrader Pneumatic Female Threaded Plug Markets Chemical Processing, Construction, Maintenance Repair Operations (MRO), Mining Product Options Part Number Length Maximum OD Body Size Thread Thread Size Pipe Thread Material SHD2F1 1.49" 0.79" 1/4" NPT 1/8" NPT / NPTF Steel SHD2F2 1.62" 0.79" 1/4" NPT 1/4" NPT / NPTF Steel SHD4F3 1.79" 1.01" 1/2" NPT 3/8" NPT / NPTF Steel