This spiral flute machine tap is 3 3/8 inches long, with a 1/2"-20 UNF thread and a 0.367-inch shank diameter. This right hand plug tap is made from high speed steel with a bright finish.
Technical Specs
ItemSpiral Flute Tap
Thread StandardUNF
Tap FinishBright (Uncoated)
Overall Length3 3/8 in
Thread LimitH3
Thread DirectionRight Hand
Tap Shank StandardUSCTI Table 302A
55% Thread Drill Size11.80 mm
Extended NeckYes
Material Grade - Machining1093
Primary Material Application ISO CodeN
Shank Type - MachiningStraight
Square Size0.2750 in
Thread Limit / Class of FitH3 / 2B
Series1093
StandardsUSCTI Table 302A
Tap StyleSpiral Flute
Thread Size1/2"-20
Tap MaterialHigh Speed Steel
Thread Length15/16 in
75% Thread Drill Size11.40 mm
Class of Fit2B
Number of Flutes3
Primary Material ApplicationAluminum, Brass, Bronze, Copper
65% Thread Drill Size11.60 mm
Helix Angle52 Degrees
Measurement SystemFractional Inch
Shank Length1 23/32 in
Spiral DirectionRight Hand
Tap ChamferPlug
Threads per Inch20 TPI
Shank Dia.23/64 in
Tap GroupingTap
Country of OriginUnited States
(subject to change)