drill bit HSS-G type SN 7,8 mm
Straight shank twist drill, jobber series PROgresso High battery life due to low friction of the drill bit/ High resistance/ Long tool life/ No center punch required/ Quick and easy drilling/ /
Usage:Designed to drill: steel and cast iron up to 1000 N/mm², thermosets such as Bakelit, Pertinax, Resopal, Thermoplastics such as PA, PE, PP, PVC and non-ferrous metals, alu, copper, brass; Partially suitable for: V2A, V4A and acid-resistant steels
Package: X-Pack with 10 pcs. up to ¯ 10; from ¯ 10,2 with 5 pcs. each; from ¯ 14,5 with 1 pcs. each
¯ mm 7,8
L 117
L2 75
Tolerance h8
material HSS-G type SN
Point grinding Tapered finish
point angle 130¡
web thinning Special optimized cross ground finish
Web thickness Thicker than regular
Drilling depth 5x D
Drilling depth 5x D
Helix angle 35 - 40¡
Constructional features acc. to DIN 1414
