Toro Z Master 7500-D Series Service Manual page 15

Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Series)
Thread Size
Regular Height Nuts (Class 8 or Stronger
M5 X 0.8
M6 X 1.0
M8 X 1.25
M10 X 1.5
M12 X 1.75
M16 X 2.0
M20 X 2.5
NOTE: Reduce torque values listed in the table above by 25% for lubricated fasteners. Lubricated
fasteners are defined as threads coated with a lubricant such as oil, graphite, or thread sealant
such as Loctite.
Torque values may have to be reduced when installing fasteners into threaded aluminum or brass.
The specific torque value should be determined based on the fastener size, the aluminum or base
material strength, length of thread engagement, etc.
The nominal torque values listed above are based on 75% of the minimum proof load specified in
SAE J1199. The tolerance is approximately ± 10% of the nominal torque value. Thin height nuts
include jam nuts.
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Table of Contents
SPECIFICATIONS
Class 8.8 Bolts, Screws, Studs with
Nuts)
in-lb.
57 ± 6
96 ± 10
ft-lbs.
19 ± 2
38 ± 4
66 ± 7
166 ± 17
325 ± 33
Class 10.9 Bolts, Screws, Studs with
Regular Height Nuts (Class 10 or
N-cm
644 ± 68
1085 ± 113 133 ± 14
N-m
26 ± 3
52 ± 5
90 ± 10
255 ± 23 229 ± 23
440 ± 45 450 ± 46
Z Master 7500-D Series Service Manual
March 2018 - Digital Edition
stronger Nuts)
in-lb. N-cm
78 ± 8 881 ± 90
1503 ± 158
ft-lbs.
28 ± 3 38 ± 4
54 ± 6 73 ± 8
93 ± 10 126 ± 14
310 ± 31
610 ± 62
N-m