DRILLCO - 1/4-28,HSS LEFT HAND TAPER TAP - 23A116FT

Left Hand Taps are used to create counterclockwise threads in a hole. These can be used in applications where the screw could loosen due to stress.
Made from premium grade HSS for extended life
Geoemetry is ideal for through or blind holes
Geometries available in taper, plug, and bottoming
Bright finish for added lubricity
Left handed teeth are rotated counterclockise to produce left handed threads
Square shank for use with standard sized tap wrenches