This hand tap is made of high speed steel and has a 0.255 inch diameter, 1½ inch long shank. It is designed for use with cast iron, stainless steel, steel, and meets the standards for USCTI. This HTGP-TN series hand tap has a TiN finish, and has fractional inch measurements. It has right hand direction with a 2½ inch length. Plus it has four flutes and a straight shank.
Technical Specs
ItemHand Tap
Thread StandardUNC
Tap MaterialHigh Speed Steel
Thread Length1 in
75% Thread Drill Size#7
Class of Fit2B
Number of Flutes4
55% Thread Drill Size#3
Extended NeckYes
Primary Material ApplicationCast Iron, Stainless Steel, Steel
SeriesHTGP-TN
Shank Length1 1/2 in
Spiral DirectionNeutral
StandardsUSCTI 302A
Tap StyleStraight Flute
Threads per Inch20 TPI
Thread Size1/4"-20
Tap ChamferTaper
Tap FinishTiN
Overall Length2 1/2 in
Thread LimitH3
Thread DirectionRight Hand
Tap Shank StandardUSCTI
65% Thread Drill Size#5
Measurement SystemFractional Inch
Primary Material Application ISO CodeK, M, P
Shank Dia.0.255 in
Shank Type - MachiningStraight
Square Size0.1910 in
Tap GroupingTap
Thread Limit / Class of FitH3 / 2B
Helix Angle0 Degrees
Country of OriginUnited States
(subject to change)