This 397 spiral point tap is made of high speed steel and has a 0.381 inch diameter, 4⅛ inch long shank. It is designed for use with stainless steel/steel, and meets the standards for ANSI. This 397 series spiral point tap has an oxide finish, and has fractional inch measurements. It is non-coolant through, has right hand direction with a six-inch length. Plus it has three flutes.
Technical Specs
ItemSpiral Point Tap
Thread StandardUNC
Overall Length6 in
75% Thread Drill SizeP
Thread DirectionRight Hand
55% Thread Drill Size8.40 mm
Coolant FedNon-Coolant Through
Spiral DirectionNeutral
Measurement SystemFractional Inch
Primary Material Application ISO CodeM, P
Shank Dia.0.381 in
Square Size0.2850 in
Tap ChamferPlug
Tap MaterialHigh Speed Steel
Tap StyleSpiral Point
Helix Angle0 Degrees
Thread Size3/8"-16
Tap FinishOxide
Thread Length1 7/8 in
Thread LimitH3
Number of Flutes3
65% Thread Drill Size5/16 in
Extended NeckNo
Material Grade - Machining397
Primary Material ApplicationStainless Steel, Steel