This 397 spiral point tap is made of high speed steel and has a 0.318 inch diameter, 4 19/64 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 Size17/64 in
Thread DirectionRight Hand
55% Thread Drill SizeI
Coolant FedNon-Coolant Through
Spiral DirectionNeutral
Measurement SystemFractional Inch
Primary Material Application ISO CodeM, P
Shank Dia.0.318 in
Square Size0.2380 in
Tap ChamferPlug
Tap MaterialHigh Speed Steel
Tap StyleSpiral Point
Helix Angle0 Degrees
Thread Size5/16"-18
Tap FinishOxide
Thread Length1 11/16 in
Thread LimitH3
Number of Flutes3
65% Thread Drill SizeF
Extended NeckNo
Material Grade - Machining397
Primary Material ApplicationStainless Steel, Steel