●产品描述:
Spiral Flute Bridge Reamers - Metric
Have a taper lead angle of 1 in 10 on diameter and are used for reaming pairs of holes which may be out of alignment, particularly with structural steel components, i.e. when assembling pre-drilled steel plate ready for riveting. Previously known as 'Boilermakers' reamers. Manufactured to BS 328 : Part 4 : 1990.
Metric Limits of Tolerance (to H7)
Diameter
Over Up to and Including High Low
- 3 0.008 0.004
3 6 0.010 0.005
6 10 0.012 0.006
10 18 0.015 0.008
18 30 0.017 0.009
30 50 0.021 0.012
50 80 0.025 0.014
80 120 0.029 0.016
Inch Limits of Tolerance (to H7)
Diameter
Over Up to and Including High Low
- 7/64" 0.0003 0.0001
7/64" 15/64" 0.0004 0.0002
15/64" 25/64" 0.0005 0.0002
25/64" 43/64" 0.0006 0.0003
43/64" 11/8" 0.0007 0.0004
11/8" 11/2" 0.0008 0.0004
11/2" 2" 0.0010 0.0005