Dormer G1258.0X4.5 5973224 180° 3-flute HSS counterbore, 8mm cutting diameter with 4.5mm guide pilot diameter and 5mm guide pilot length. DIN 373 standard for counterbores with parallel shank and solid pilot. Suitable for cast iron, non-ferrous metals, and steel. 5mm connection diameter with M4 thread and h9 tolerance.

ApplicationAngleIcon_DICT_SEL

Counterboring (for fasteners) 180°

Basic Standard

DIN 373

Coating

Bright

Connection diameter - inch (DCON MS)

0.1969

Connection diameter - millimeter (DCON MS)

5

Connection diameter tolerance machine side (TCDCONMS)

h9

Connection size code machine side (CZC MS)

M 4 m

Cutting diameter - inch (DC)

0.315

Cutting diameter - millimeter (DC)

8

Cutting diameter tolerance class (TCDC)

z9

EDP number

107805

Flute count (NOF)

3

Guide Pilot Diameter - millimeter (GPD)

4.5

Guide Pilot Length - millimeter (GPL)

5

Hand (Cutting direction)

Right

Head length - millimeter (LH)

14

Material

HSS

Material application

K - Cast iron, N - Non-ferrous metals, P - Steel and cast steel

MID number

5973224

Ordering code ANSI

G1258.0X4.5

Overall length - inch (OAL)

2.7953

Overall length - millimeter (OAL)

71

Shank

Cylindrical shank

Step included angle (STA)

180