Toro Groundsmaster 360 Service Manual page 14

Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)
Grade 1, 5 &
Thread Size 8 with Thin
Height Nuts
in- -lb
# 6 -- 32 UNC
10 + 2 10 + 2
# 6 -- 40 UNF
# 8 -- 32 UNC
13 + 2 13 + 2
# 8 -- 36 UNF
# 10 -- 24 UNC
18 + 2 18 + 2
# 10 -- 32 UNF
1/4 -- 20 UNC 48 + 7
1/4 -- 28 UNF 53 + 7
5/16 -- 18 UNC 115 + 15
5/16 -- 24 UNF 138 + 17
ft- -lb
3/8 -- 16 UNC 16 + 2
3/8 -- 24 UNF 17 + 2
7/16 -- 14 UNC 27 + 3
7/16 -- 20 UNF 29 + 3
1/2 -- 13 UNC 30 + 3
1/2 -- 20 UNF 32 + 4
5/8 -- 11 UNC 65 + 10
5/8 -- 18 UNF 75 + 10
3/4 -- 10 UNC 93 + 12
3/4 -- 16 UNF 115 + 15
7/8 -- 9 UNC 140 + 20
7/8 -- 14 UNF 155 + 25
NOTE: 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.
Product Records and Maintenance
SAE Grade 1 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 2 or Stronger Nuts)
in- -lb N- -cm
13 + 2 13 + 2 147 + 23 147 + 23
25 + 5 25 + 5 282 + 30 282 + 30
30 + 5 30 + 5 339 + 56 339 + 56
53 + 7 599 + 79
65 + 10 734 + 113
105 + 15 1186 + 169
128 + 17 1446 + 192
ft- -lb N- -m
16 + 2 22 + 3
18 + 2 24 + 3
27 + 3 37 + 4
29 + 3 39 + 4
48 + 7 65 + 9
53 + 7 72 + 9
88 + 12 119 + 16
95 + 15 129 + 20
140 + 20 190 + 27
165 + 25 224 + 34
225 + 25 305 + 34
260 + 30 353 + 41
Page 2 - - 4
SAE Grade 5 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 2 or Stronger Nuts)
in- -lb N- -cm
15 + 2 169 + 23
17 + 2 192 + 23
29 + 3 328 + 34
31 + 4 350 + 45
42 + 5 475 + 56
48 + 5 542 + 56
100 + 10 1130 + 113
115 + 12 1299 + 136
200 + 25 2260 + 282
225 + 25 2542 + 282
ft- -lb N- -m
30 + 3 41 + 4
35 + 4 47 + 5
50 + 5 68 + 7
55 + 6 75 + 8
75 + 8 102 + 11
85 + 9 115 + 12
150 + 15 203 + 20
170 + 18 230 + 24
265 + 27 359 + 37
300 + 30 407 + 41
430 + 45 583 + 61
475 + 48 644 + 65
NOTE: The nominal torque values listed above for
Grade 5 and 8 fasteners are based on 75% of the mini-
mum proof load specified in SAE J429. The tolerance is
approximately + 10% of the nominal torque value. Thin
height nuts include jam nuts.
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
engine oil or thread sealant such as Loctite.
SAE Grade 8 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 5 or Stronger Nuts)
in- -lb N- -cm
23 + 3 262 + 34
25 + 3 282 + 34
41 + 5 463 + 56
43 + 5 486 + 56
60 + 6 678 + 68
68 + 7 768 + 79
140 + 15 1582 + 169
160 + 17 1808 + 192
300 + 30 3390 + 339
325 + 33 3672 + 373
ft- -lb N- -m
43 + 5 58 + 7
50 + 6 68 + 8
70 + 7 95 + 9
77 + 8 104 + 11
105 + 11 142 + 15
120 + 12 163 + 16
210 + 21 285 + 28
240 + 24 325 + 33
375 + 38 508 + 52
420 + 43 569 + 58
600 + 60 813 + 81
667 + 66 904 + 89
Groundsmaster 360