Image Dual-Lock P-Series Thor Interchange Male Thread Coupler with Knurled Flanged Sleeve Markets Mining, Steel Processing Jump to Section Product Options Related Products Product Options Part Number Body Size Thread Thread Size Material 4PM4-FS 1/2" NPTF 1/2" Steel 4PM3-FS 1/2" NPTF 3/8" Steel 4PM6-FS 1/2" NPTF 3/4" Steel Related Products Image Dual-Lock P-Series Thor Interchange Female Thread Coupler with Knurled Flanged Sleeve