PRELIMINARY – For Toro Distributor
and Toro Company
use only.
ProForce Debris Blower
Page 2
−
4
Product Records and Maintenance
Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)
Thread Size
Grade 1, 5 &
8 with Thin
Height Nuts
SAE Grade 1 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 2 or Stronger Nuts)
SAE Grade 5 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 2 or Stronger Nuts)
SAE Grade 8 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 5 or Stronger Nuts)
in
−
lb
in
−
lb
N
−
cm
in
−
lb
N
−
cm
in
−
lb
N
−
cm
# 6
−
32 UNC
10 + 2
13 + 2
147 + 23
15 + 2
170 + 20
23 + 2
260 + 20
# 6
−
40 UNF
10 + 2
13 + 2
147 + 23
17 + 2
190 + 20
25 + 2
280 + 20
# 8
−
32 UNC
13 + 2
25 + 5
282 + 30
29 + 3
330 + 30
41 + 4
460 + 45
# 8
−
36 UNF
13 + 2
25 + 5
282 + 30
31 + 3
350 + 30
43 + 4
485 + 45
# 10
−
24 UNC
18 + 2
30 + 5
339 + 56
42 + 4
475 + 45
60 + 6
675 + 70
# 10
−
32 UNF
18 + 2
30 + 5
339 + 56
48 + 4
540 + 45
68 + 6
765 + 70
1/4
−
20 UNC
48 + 7
53 + 7
599 + 79
100 + 10
1125 + 100
140 + 15
1580 + 170
1/4
−
28 UNF
53 + 7
65 + 10
734 + 113
115 + 10
1300 + 100
160 + 15
1800 + 170
5/16
−
18 UNC
115 + 15
105 + 17
1186 + 169
200 + 25
2250 + 280
300 + 30
3390 + 340
5/16
−
24 UNF
138 + 17
128 + 17
1446 + 192
225 + 25
2540 + 280
325 + 30
3670 + 340
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 + 4
58 + 5
3/8
−
24 UNF
17 + 2
18 + 2
24 + 3
35 + 3
47 + 4
50 + 4
68 + 5
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 + 5
75 + 7
77 + 7
104 + 9
1/2
−
13 UNC
30 + 3
48 + 7
65 + 9
75 + 8
102 + 11
105 + 10
142 + 14
1/2
−
20 UNF
32 + 3
53 + 7
72 + 9
85 + 8
115 + 11
120 + 10
163 + 14
5/8
−
11 UNC
65 + 10
88 + 12
119 + 16
150 + 15
203 + 20
210 + 20
285 + 27
5/8
−
18 UNF
75 + 10
95 + 15
129 + 20
170 + 15
230 + 20
240 + 20
325 + 27
3/4
−
10 UNC
93 + 12
140 + 20
190 + 27
265 + 25
359 + 34
375 + 35
508 + 47
3/4
−
16 UNF
115 + 15
165 + 25
224 + 34
300 + 25
407 + 34
420 + 35
569 + 47
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 + 45
644 + 61
660 + 60
895 + 81
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.
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
approxi 10% of the nominal torque value. Thin
height nuts include jam nuts.
