OSG Tap and Die, Inc. PULLEY Tap 5/16-18 X 8" H3 4FL Plug Tap PULLEY Tap S/O, OSG 1290601, Thread Size (Inch): 5/16-18; Thread Limit: H3; Number of Flutes: 4; Chamfer: Plug;

General Purpose Tap (List 916) Straight Flute Hand Pulley Tap for Ferrous and Non-ferrous Materials.