North American Tool 17691 HSS GH7 0.003" Oversize Spiral Point Hand Tap, Uncoated Bright Finish, Plug Chamfer, #2-56 NC Thread Size, 1.75" Length, H7 Limit

Description

As to general physical dimensions, spiral point taps are identical with the standard hand tap. However, the spiral point tap has the cutting face of the first few threads cut at a predetermined angle relative to the tap's axis angle to force the evacuation of chips ahead of the cutting action. This feature, plus the excellent shearing action of the flute, make spiral pointed taps ideal for production tapping of through holes. Typically, this type of tap has a shallower flute passage than conventional taps. This gives the spiral point tap more cross-sectional area, which means greater strength, allows higher tapping speeds and requires less power to drive. This GH7 tap is .003 inch oversize. These taps are proudly made in the USA.