Toro 07511AA, Service Manual

Page: 27 / 384

Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch
Series)
Thread Size Grade 1, 5
and 8 with
Thin Height
Nuts
SAE Grade 1 Bolts,
Screws, Studs, and Sems
with Regular Height
Nuts(SAE J995 Grade 2
or Stronger Nuts)
SAE Grade 5 Bolts,
Screws, Studs, and Sems
with Regular Height
Nuts(SAE J995 Grade 2
or Stronger Nuts)
SAE Grade 8 Bolts,
Screws, Studs, and Sems
with Regular Height
Nuts(SAE J995 Grade 2
or Stronger Nuts)
in-lb in-lb N∙cm in-lb N∙cm in-lb N∙cm
#6 - 32 UNC 15 ± 2 169 ± 23 23 ± 3 262 ± 34
#6 - 40 UNF
10 ± 2 13 ± 2 147 ± 23
17 ± 2 192 ± 23 25± 3 282 ± 34
8 - 32 UNC 29 ± 3 328 ± 34 41± 5 463 ± 56
#8 - 36 UNF
13 ± 2 25 ± 5 282 ± 56
31 ± 4 350 ± 45 43 ± 5 486 ± 56
#10 - 24 UNC 42 ± 5 475 ± 56 60 ± 6 678 ± 68
#10 - 32 UNF
18 ± 2 30 ± 5 339 ± 56
48 ± 5 542 ± 56 68± 7 768 ± 79
1/4 - 20 UNC 48 ± 7 53 ± 7 599 ± 79 100 ± 10 1130 ± 113 140 ± 15 1582 ± 169
1/4 - 28 UNF 53 ± 7 65 ± 10 734 ± 113 115 ± 12 1299 ± 136 160 ± 17 1808 ± 192
5/16 - 18 UNC 115 ± 15 105 ± 15 1186 ± 169 200 ± 25 2260 ± 282 300 ± 30 3390 ± 339
5/16 - 24 UNF 138 ± 17 128 ± 17 1146 ± 192 225 ± 25 2542 ± 282 325 ± 33 3672 ± 373
ft-lb ft-lb N∙m ft-lb N∙m ft-lb N∙m
3/8 - 16 UNC 16 ± 2 16 ± 2 22 ± 3 30 ± 3 41 ± 4 43 ± 5 58 ± 7
3/8 - 24 UNF 17 ± 2 18 ± 2 24 ± 3 35 ± 4 47 ± 5 50 ± 6 68 ± 8
7/16 - 14 UNC 27 ± 3 27 ± 3 37 ± 4 50 ± 5 68 ± 7 70 ± 7 95 ± 9
7/16 - 20 UNF 29 ± 3 29 ± 3 39 ± 4 55 ± 6 75 ± 8 77 ± 8 104 ± 11
1/2 - 13 UNC 30 ± 3 48 ± 7 65 ± 9 75 ± 8 102 ± 11 105 ± 11 142 ± 15
1/2 - 20 UNF 32 ± 4 53 ± 7 72 ± 9 85 ± 9 115 ± 12 120 ± 12 163 ± 16
5/8 - 11 UNC 65 ± 10 88 ± 12 119 ± 16 150 ± 15 203 ± 20 210 ± 21 285 ± 28
5/8 - 18 UNF 75 ± 10 95 ± 15 129 ± 20 170 ± 18 230 ± 24 240 ± 24 325 ± 33
3/4 - 10 UNC
93 ± 12 140 ± 20 190 ± 27 265 ± 27 359 ± 37 375 ± 38 508 ± 52
3/4 - 16 UNF 115 ± 15 165 ± 25 224 ± 34 300 ± 30 407 ± 41 420 ± 43 569 ± 58
7/8 - 9 UNC 140 ± 20 225 ± 25 305 ± 34 430 ± 45 583 ± 61 600 ± 60 813 ± 81
7/8 - 14 UNF 155 ± 25 260 ± 30 353 ± 41 475 ± 48 644 ± 65 667 ± 66 904 ± 89
Note: Reduce the torque values listed in the table above by 25% for lubricated fasteners. Lubricated
fasteners are defined as threads coated with a lubricant, such as engine oil, or a thread sealant, such
as Loctite.
Note: The torque values must be reduced when installing the fasteners into threaded aluminum or
brass. The specified torque value should be determined based on the aluminum or base material
strength, fastener size, length of thread engagement, etc.
Note: The nominal torque values listed above for Grade 5 and 8 fasteners are based on 75% of the
minimum proof load specified in SAE J429. The tolerance is approximately ± 10% of the nominal
torque value. The thin height nuts include jam nuts.
Outcross 9060 Page 2–9 Specifications and Maintenance: Torque Specifications
18234SL Rev B