Grasshopper SL98 Series - Measurement Conversion; Bolt Size and Tightening Recommendations

10
Bolt Head Markings
SAE Grade 2
(no dashes)
SAE Grade 5
(3 radial dashes)
SAE Grade 8
(6 radial dashes)
MEASUREMENT CONVERSION
Measurements expressed in this manual are
decimal values. Use the chart below if you are
unsure of a measurement to obtain the fractional
equivalent.
BOLT SIZE AND TIGHTENING
RECOMMENDATIONS
The chart below lists the correct tightening
torque for bolts used on Grasshopper equip-
ment. When bolts are to be tightened or replaced
refer to this chart to determine the grade of bolt
and proper torque (except when specific torque
values are assigned in the manual text).
D e c i m a l
C o n v e r s i o n T a b l e - I n c h e s
D e c i m a l F r a c t i o n
0 . 0 6 2
0 . 1 2 5
0 . 1 8 7
0 . 2 5 0
0 . 3 1 2
0 . 3 7 5
0 . 4 3 7
0 . 5 0 0
1 / 1 6
1 / 8
3 / 1 6
1 / 4
5 / 1 6
3 / 8
7 / 1 6
1 / 2
0 . 5 6 2
0 . 6 2 5
0 . 6 8 7
0 . 7 5 0
0 . 8 1 2
0 . 8 7 5
0 . 9 3 7
1 . 0 0 0
9 / 1 6
5 / 8
1 1 / 1 6
3 / 4
1 3 / 1 6
7 / 8
1 5 / 1 6
1
F r a c t i o n
R e c o m m e n d e d T o r q u e i n F o o t P o u n d s
F r a c t i o nD e c i m a l S A E G r a d e 2 S A E G r a d e 5 S A E G r a d e 8
B o l t D i a m e t e r i n I n c h e s
0 . 2 5 0
0 . 3 1 2
0 . 3 7 5
0 . 4 3 7
0 . 5 0 0
0 . 5 6 2
0 . 6 2 5
0 . 7 5 0
0 . 8 7 5
1 . 0 0 0
1 / 4
5 / 1 6
3 / 8
7 / 1 6
1 / 2
9 / 1 6
5 / 8
3 / 4
7 / 8
1
6
1 3
2 3
3 7
5 7
8 2
1 1 1
2 0 0
2 8 0
3 5 0
1 1
2 1
3 8
5 5
8 5
1 2 5
1 7 5
3 0 0
4 5 0
6 8 0
1 4
2 5
5 5
8 0
1 2 0
1 8 0
2 3 0
4 4 0
7 2 0
1 0 3 5