N 31 Matrix with shoulder, blank, ISO 8977

Ordering Example
Compass = 31
HSS material = 3
d1 = Ø 5 mm = 0500.
L = 20 mm = 020
Order number = 31.3.0500.020

Material: HSS
Order No: 31,3
Hardness: 64+-2 HRC

Bussola N31 – forma B