Century Drill & Tool 5/16-18 National Coarse Carbon Steel Tap-Plug and f Letter Gauge Drill Bit Latitude Wide flute entrances lead to

Wide flute entrances lead to faster drilling speeds

and high strength alloys

all-metal chuck for maximum grip and bit retention

Offset screw holes for extra strength to prevent wood splitting

Can be plunged into material at any point

Century Drill & Tool 5/16-18 National Coarse Carbon Steel Tap-Plug and f Letter Gauge Drill Bit Latitude Wide flute entrances lead toTap NPT And Drill Bit Combo Pack. National Pipe Thread 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. National Pipe Thread Tap Sizes For Internal Threading On All Types Of Pipes. Wire Gauge Brite Drill Bits. Made From Feature Premium Grade High Speed Steel. Precision Ground Points. Designed To Operate In