Jobber drills with straight shank DIN 338

Extra length taper shank twist drills
DIN 1870, series 1
Range of applications
Manufacturing specifications
HSS
Article no. 82340
Type FN
R
A robust tool for drilling very deep holes
in difficult conditions as when swarf congestion
prevents an adequate flow of
coolant to the drill point. (Not suitable for
lubrication holes in crankshafts - use
special purpose drill for this application).
For use in steels and cast iron with a
tensile strength of up to 1000 N/mm 2 .
Point grinding: relieved cone
Point angle: 130˚
Web thinned: to DIN 1412, form A
Helix angle: greater than standard
Web thickness: considerably greater
than standard
Web taper: none
Flute form: very wide flute with special
„rolled-off“ heels
Tolerance on Ø: h8
Other manufacturing specifications to
DIN 1414
steam tempered
nitrided lands
130