Bright (uncoated)
E1111/4NO9
UNF Hand Tap Straight Flute
Material ID: 5975562
Set of straight flute serial taps NO9 for Unified National Fine thread UNF 1/4" with 28 TPI and 2B class of fit, consisting of 1 tap with a truncated thread profile and 3.5-5xP second lead and 1 tap with a 2-3xP plug lead, dimensions according to DIN 2181 standard with 6.0mm shank and 4.9mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining steel and non-ferrous metals
Product Feature
Thread Form, Unified Fine
DIN 2181 – Hand Tap Standard
Internal Inch Thread Medium Class of Fit
Through or Blind Hole Application
1.5×D Usable Tool Depth to Diameter Ratio
High Speed Steel Tool Material
B 3.5-5, C 2-3
Straight Flute Geometry
Right Hand Rotation / Cutting