GENERAL INTRODUCTION
1–21
Comparison of flange outer diameters
COMPATIBILITY (NO COMPATIBILITY IN BOLTS AND NUTS)
NOTICE
[Bolt/nuts with new flange (w/o grooves)] can not be used on the place where [bolts/nuts with old flange (w/
grooves)] were used. In addition, use care to avoid misassembly because even when nominal sizes and pitches
are same, there is no compatibility in strength if types are different.
Thread
diameter
Bolt
Nut
With old flange
(w/grooves)
With new flange
(w/o grooves)
With old flange
(w/grooves)
With new flange
(w/o grooves)
Strength
class
Flange
outer
diameter
Strength
class
Flange
outer
diameter
Strength
class
Flange
outer
diameter
Strength
class
Flange
outer
diameter
M8
7T, 9T
15.5
8.8, 10.9
17
7N
15.5
8
17
M10
7T, 9T
18.5
8.8
20
7N
18.5
8
21.5
10.9
21.5
M12
7T, 9T
21.5
8.8
24
7N
21.5
8
26
10.9
26
M14
—
—
10.9
30.5
—
—
12
30
SHTS01ZZZ0000026
SEAT SURFACE WITH OLD FLANGE
SEAT SURFACE WITH NEW FLANGE
NO COMPATIBILITY
BOLTS/NUTS WITH OLD FLANGE (W/GOOVES)
BOLTS/NUTS WITH NEW FLANGE (W/O GOOVES)
SEAT SURFACE WITH OLD FLANGE
SEAT SURFACE WITH NEW FLANGE