This tap spiral point ¼-20unc is made of high speed steel and has a 0.255 inch diameter, 1½ inch long shank. It is for use with steel, and meets the standards for Table 302A. This 1011-TC series tap spiral point ¼-20unc has a TiCN finish, and has fractional inch measurements. It has right hand direction with a 2½ inch length. Plus it has three flutes and a straight shank.
Technical Specs
ItemSpiral Point Tap
Thread StandardUNC
Tap FinishTiCN
Overall Length2 1/2 in
Thread LimitH3
Thread DirectionRight Hand
Primary Material ApplicationStainless Steel, Steel
65% Thread Drill Size#5
Measurement SystemFractional Inch
Series1011-TC
Shank Length1 1/2 in
Spiral DirectionNeutral
StandardsUSCTI 302A
Tap GroupingTap
Thread Limit / Class of FitH3 / 2B
Tap StyleSpiral Point
Thread Size1/4"-20
Tap MaterialHigh Speed Steel
Thread Length1 in
75% Thread Drill Size#7
Class of Fit2B
Number of Flutes3
55% Thread Drill Size#3
Extended NeckYes
Primary Material Application ISO CodeM, P
Shank Dia.0.255 in
Shank Type - MachiningStraight
Square Size0.1910 in
Tap ChamferPlug
Threads per Inch20 TPI
Helix Angle0 Degrees
Country of OriginUnited States
(subject to change)