This hand tap is made of high speed steel and has a 0.255 inch diameter, 1½ inch long shank. It is for use with aluminum, brass, bronze, cast iron, copper, steel, and meets the standards for USCTI Table 302, USCTI. This 402 series hand tap has a bright finish, and has fractional inch measurements. It has right hand direction with a 2½ inch length. Plus it has two 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 Fit3B
Number of Flutes2
55% Thread Drill Size#3
Extended NeckYes
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel
Series402
Shank Length1 1/2 in
Spiral DirectionNeutral
StandardsUSCTI 302
Tap StyleStraight Flute
Threads per Inch20 TPI
Thread Size1/4"-20
Tap ChamferPlug
Tap FinishBright (Uncoated)
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, N, P
Shank Dia.0.255 in
Shank Type - MachiningStraight
Square Size0.1910 in
Tap GroupingTap
Thread Limit / Class of FitH3 / 3B
Helix Angle0 Degrees
Country of OriginUnited States
(subject to change)