This hand tap is made of high speed steel and has a 0.318 inch diameter, 1.5940 inch long shank. It is for use with aluminum, brass, bronze, cast iron, copper, steel, and meets the standards for USCTI. This HTGP series hand tap has a bright finish, and has fractional inch measurements. It has right hand direction with a 2.72 inch length. Plus it has three flutes and a straight shank.
Technical Specs
ItemHand Tap
Thread StandardUNC
Tap MaterialHigh Speed Steel
Thread Length11/16 in
75% Thread Drill SizeF
Class of Fit2B
Number of Flutes3
55% Thread Drill SizeI
Extended NeckYes
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel
SeriesHTGP
Shank Length1.5940 in
Spiral DirectionNeutral
StandardsUSCTI 302A
Tap StyleStraight Flute
Threads per Inch18 TPI
Thread Size5/16"-18
Tap ChamferBottoming
Tap FinishBright (Uncoated)
Overall Length2.72 in
Thread LimitH3
Thread DirectionRight Hand
Tap Shank StandardUSCTI
65% Thread Drill Size17/64 in
Measurement SystemFractional Inch
Primary Material Application ISO CodeK, M, N, P
Shank Dia.0.318 in
Shank Type - MachiningStraight
Square Size0.2380 in
Tap GroupingTap
Thread Limit / Class of FitH3 / 2B
Helix Angle0 Degrees
Country of OriginUnited States
(subject to change)