Image PD-Series Diagnostic Interchange Female NPT Plug Jump to Section Product Options Related Products Product Options Part Number Length Maximum OD Body Size Thread Thread Size Pipe Thread Material PD1F1 1.88" (47.8 mm) 0.76" (19.3 mm) 1/8" Female NPT 1/8"-27 NPT / NPTF Steel PD1F2 1.88" (47.8 mm) 0.76" (19.3 mm) 1/8" Female NPT 1/4"-18 NPT / NPTF Steel Related Products Image PD-Series Diagnostic Interchange Female NPT Coupler Image PD-Series Diagnostic Male Coupler Image PD-Series Diagnostic Interchange Male Threaded Plug