This spiral flute machine tap is 2 1/2 inches long, with a 1/4"-28 UNF thread and a 0.255-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 Length2 1/2 in
Thread LimitH3
Thread DirectionRight Hand
Tap Shank StandardUSCTI Table 302A
55% Thread Drill Size5.70 mm
Extended NeckYes
Material Grade - Machining1093
Primary Material Application ISO CodeN
Shank Type - MachiningStraight
Square Size0.1910 in
Thread Limit / Class of FitH3 / 2B
Series1093
StandardsUSCTI Table 302A
Tap StyleSpiral Flute
Thread Size1/4"-28
Tap MaterialHigh Speed Steel
Thread Length5/8 in
75% Thread Drill Size5.45 mm
Class of Fit2B
Number of Flutes3
Primary Material ApplicationAluminum, Brass, Bronze, Copper