Item #: 96925110Brand: Greenfield ThreadingModel #: 313600 Features and Benefits Plug chamfers are the most commonly used chamfer and are designed for efficiently threading through and blind holes. They have 3 to 5 threads. Extension taps are used for deep hole drilling and where a longer reach is required. They are designed with standard threads and an extended shank. Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic. High Speed Steel (HSS) provides good wear-resistance and can be used in general purpose applications for both ferrous and nonferrous materials. Product Specifications Extension Taps; Thread Size: 5/16-18 (UNC) ; Overall Length (Inch): 6 ; Overall Length (mm): 152.4000 ; Chamfer: Plug ; Thread Limit: H11 ; Number of Flutes: 3 Thread Size 5/16-18 (UNC) Overall Length (Inch) 6 Overall Length (mm) 152.4000 Chamfer Plug Thread Limit H11 Number of Flutes 3 Tap Type Extension Finish/Coating Bright Flute Direction Right Hand Thread Standard UNC Material High Speed Steel Thread Length (Inch) 1.1 Thread Direction Right Hand Shank Diameter (Decimal Inch) 0.3180 Square Length (Inch) 0.38 Flute Direction Right Hand Series/List SPGPX+5 Shank Diameter (Decimal Inch) 0.3180 Shank Size Type Regular PSC Code 5136