Standard Torque For Dry, Zinc Plated, And Steel Fasteners (Inch Series) - Toro Workman 1100 Service Manual

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 + 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
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 + 17 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 + 2 170 + 20
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
on the fastener size, the aluminum or base material
strength, length of thread engagement, etc.
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.
SAE Grade 8 Bolts, Screws, Studs, &
Sems with Regular Height Nuts
(SAE J995 Grade 5 or Stronger Nuts)
in–lb N–cm
23 + 2 260 + 20
25 + 2 280 + 20
41 + 4 460 + 45
43 + 4 485 + 45
60 + 6 675 + 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 95 + 9
77 + 7 104 + 9
105 + 10 142 + 14
120 + 10 163 + 14
210 + 20 285 + 27
240 + 20 325 + 27
375 + 35 508 + 47
420 + 35 569 + 47
600 + 60 813 + 81
660 + 60 895 + 81
Workman 1100/2100/2110