Century Drill & Tool Tap-Plug 7/16-20NF 25/64 Brite Drill Bit Machine Screw and Fractional Plug Taps. Precision Cut Threads, Accurately Formed For Consistent, Exact Threading. Heat Treated And Tempered For File Hard Threads, And Longer, Useful Life. Designed For Hand Cutting Applications. For Use With Tap Wrenches To Cut Internal Threads. 75% Thread Engagement. Plug Style Is The Most Commonly Used Style Of Tap -3 To 5 Threads Chamfered. Drill Bits Brite.Features Drill and tap set Tap is designed for hand cutting applications Brite industrial drill bits feature premium grade high speed steel for general purpose drilling in wood metal and plastic Century 135 degree quick cut points are self-centering and penetrate faster with less pressure Specifications Type: Drill Bit