Thread diameter (d1)UNF 1/4Pitch-Inch (TPI)28 Threads per inchTotal length (l1)66 mmFlute length (l2)19 mmShank Ø (d2)6.3 mmSquare wide (sw)5 mmShank typeStraight shank with squarePre-drilling diameter (Ø)5.5 mmNormISO 529Tool materialHSSSurfaceBrightCutting directionRightTolerance d1 (Tol. d1)2BIntrastat (HS) code82074010EAN code8716563260233