This spiral flute machine tap is 2 23/32 inches long, with a 5/16"-18 UNC thread and a 0.318-inch shank diameter. This right hand bottoming tap is made from high speed steel with a bright finish.
Technical Specs
ItemSpiral Flute Tap
Thread StandardUNC
Tap FinishBright (Uncoated)
Overall Length2 23/32 in
Thread LimitH3
Thread DirectionRight Hand
Tap Shank StandardUSCTI Table 302A
55% Thread Drill SizeI
Extended NeckYes
Material Grade - Machining1094
Primary Material Application ISO CodeN
Shank Type - MachiningStraight
Square Size0.2380 in
Thread Limit / Class of FitH3 / 2B
Series1094
StandardsUSCTI Table 302A
Tap StyleSpiral Flute
Thread Size5/16"-18
Tap MaterialHigh Speed Steel
Thread Length11/16 in
75% Thread Drill SizeF
Class of Fit2B
Number of Flutes3
Primary Material ApplicationAluminum, Brass, Bronze, Copper