N 31 with collar – Matrices with pre-hole ISO 8977

Ordering Example
Compass = 31
HSS material = 3
d1 = Ø 5 mm = 0500.
L = 20 mm = 020
Numero d’ordine = 31.3.0500.020

Material: HSS
N° d’ordine: 31,3
Hardness: 64+-2 HRC

Bussola N31 – forma B