accueil > CENTERING - SPOTTING > Centre drills
Centre drills
Short ASA centre drill
90° angle
HSS = hardness 63 HRC, to machine steels up to 800 N/mm², copper, brass, bronze, aluminium up to 6% Si.

These centre drills are designed to machine chamfers in sheets and for spoting operation prior to drilling.
General tolerances
Magafor 155
American standard
Material :
HSS
Form :
90° angle
Serie :
right hand cut, shorts
Use :
machine use
Type :
Inch
Catalog 239 :
ASA
N°
Dxd
mm
Dxd
inch
L
Reference
€ Unit
1
3,17x1,19
1/8x3/64
31
1,4-1,7
81155010000
14,29
2
4,76x1,98
3/16x5/64
47
2,4-2,7
81155020000
13,68
3
6,35x2,77
1/4x7/64
50
3,3-3,9
81155030000
16,43
4
7,93x3,17
5/16x1/8
54
3,8-4,4
81155040000
19,15
5
11,11x4,76
7/16x3/16
70
5,9-6,5
81155050000
36,49
6
12,7x5,55
1/2x7/32
76
6,9-7,5
81155060000
40,13
7
15,87x6,35
5/8x1/4
82
8,0-8,6
81155070000
66,27
8
19,05x7,93
3/4x5/16
89
10,0-10,6
81155080000
83,91