Standard Torque For Dry, Zinc Plated & Steel Fasteners (Inch Series) - Toro TimeCutter SW4200 Service Manual

Standard Torque for Dry, Zinc Plated & Steel Fasteners (Inch Series)
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series)
Grade 1, 5, &
8 with Thin
Thread Size
Height Nuts
In-lb
# 6 - 32 UNC
10 ± 2
# 6 - 40 UNF
# 8 - 32 UNC
13 ± 2
# 8 - 36 UNF
# 10 - 24 UNC
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 ± 3
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: 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.
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.
Toro TimeCutter SW/SWX Service Manual
SAE Grade 1 Bolts, Screws,
Studs, & Sems with Regular
Height Nuts (SAE J995
Grade 2 or Stronger Nuts)
In-lb N-cm
13 ± 2 147 ± 23
25 ± 5 282 ± 30
30 ± 5 339 ± 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
SPECIFICATIONS
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 ± 2 190 ± 20
29 ± 3 330 ± 30
31 ± 3 350 ± 30
42 ± 4 475 ± 45
48 ± 4 540 ± 45
100 ± 10 1125 ± 100
115 ± 10 1300 ± 100
200 ± 25 2250 ± 280
225 ± 25 2540 ± 280
ft-lb N-m
30 ± 3 41 ± 4
35 ± 3 47 ± 4
50 ± 5 68 ± 7
55 ± 5 75 ± 7
75 ± 8 102 ± 11
85 ± 8 115 ± 11
150 ± 15 203 ± 20
170 ± 15 230 ± 20
265 ± 25 359 ± 34
300 ± 25 407 ± 34
430 ± 45 583 ± 61
475 ± 45 644 ± 61
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. Thin height nuts include jam nuts.
SAE Grade 8 Bolts, Screws,
Studs, & Sems with Regular
Height Nuts (SAE J995
Grade 2 or Stronger Nuts)
In-lb N-cm
23 ± 2 260 ± 34
25 ± 2 280 ± 20
41 ± 4 460 ± 45
43 ± 4 31 ± 3
60 ± 6 674 ± 70
68 ± 6 765 ± 70
140 ± 15 1580 ± 170
160 ± 15 1800 ± 170
300 ± 30 3390 ± 340
325 ± 30 3670 ± 340
ft-lb N-m
43 ± 4 58 ± 5
50 ± 4 68 ± 5
70 ± 7 68 ± 9
77 ± 7 104 ± 9
105 ± 10 142 ± 14
120 ± 10 163 ± 14
210 ± 20 285 ± 27
240 ± 20 325 ± 27
374 ± 35 508 ± 47
420 ± 35 569 ± 47
600 ± 60 813 ± 81
660 ± 60 895 ± 81
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