Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series)
Grade 1, 5, &
8 with Thin
SAE Grade 1 Bolts, Screws, Studs, &
Sems with Regular Height Nuts
SAE Grade 5 Bolts, Screws, Studs, &
Sems with Regular Height Nuts
SAE Grade 8 Bolts, Screws, Studs, &
Sems with Regular Height Nuts
Thread Size
Height Nuts
(SAE J995 Grade 2 or Stronger Nuts)
(SAE J995 Grade 2 or Stronger Nuts)
(SAE J995 Grade 5 or Stronger Nuts)
in--lb
in--lb
N--cm
in--lb
15 + 2
N--cm
170 + 20
190 + 20
330 + 30
350 + 30
475 + 45
540 + 45
1125 + 100
1300 + 100
2250 + 280
2540 + 280
N--m
in--lb
23 + 2
N--cm
260 + 20
280 + 20
460 + 45
485 + 45
675 + 70
765 + 70
1580 + 170
1800 + 170
3390 + 340
3670 + 340
N--m
#
#
#
#
6 -- 32 UNC
6 -- 40 UNF
8 -- 32 UNC
8 -- 36 UNF
10
13
18
+ 2
+ 2
+ 2
13 + 2
147 + 23
17 + 2
25 + 2
29 + 3
41 + 4
25 + 5
30 + 5
282 + 30
339 + 56
31 + 3
43 + 4
#
#
10 -- 24 UNC
10 -- 32 UNF
42 + 4
60 + 6
48 + 4
68 + 6
1/4
-- 20 UNC
-- 28 UNF
-- 18 UNC
-- 24 UNF
48 + 7
53 + 7
53 + 7
65 + 10
105 + 17
128 + 17
ft--lb
599 + 79
734 + 113
1186 + 169
1446 + 192
N--m
100 + 10
115 + 10
200 + 25
225 + 25
ft--lb
140 + 15
160 + 15
300 + 30
325 + 30
ft--lb
1/4
5/16
115 + 15
138 + 17
ft--lb
5/16
3/8
3/8
7/16
7/16
1/2
1/2
5/8
5/8
3/4
3/4
7/8
7/8
-- 16 UNC
-- 24 UNF
-- 14 UNC
-- 20 UNF
-- 13 UNC
-- 20 UNF
-- 11 UNC
-- 18 UNF
-- 10 UNC
-- 16 UNF
-- 9 UNC
16 + 2
16 + 2
22 + 3
30 + 3
41 + 4
43 + 4
58 + 5
17 + 2
18 + 2
24 + 3
35 + 3
47 + 4
50 + 4
68 + 5
27 + 3
27 + 3
37 + 4
50 + 5
68 + 7
70 + 7
95 + 9
29 + 3
29 + 3
39 + 4
55 + 5
75 + 7
77 + 7
104 + 9
30 + 3
48 + 7
65 + 9
75 + 8
102 + 11
115 + 11
203 + 20
230 + 20
359 + 34
407 + 34
583 + 61
644 + 61
105 + 10
120 + 10
210 + 20
240 + 20
375 + 35
420 + 35
600 + 60
660 + 60
142 + 14
163 + 14
285 + 27
325 + 27
508 + 47
569 + 47
813 + 81
895 + 81
32 + 3
53 + 7
72 + 9
85 + 8
65 + 10
75 + 10
93 + 12
115 + 15
140 + 20
155 + 25
88 + 12
95 + 15
140 + 20
165 + 25
225 + 25
260 + 30
119 + 16
129 + 20
190 + 27
224 + 34
305 + 34
353 + 41
150 + 15
170 + 15
265 + 25
300 + 25
430 + 45
475 + 45
-- 14 UNF
Note:
Reduce torque values listed in the table above
on the fastener size, the aluminum or base material
strength, length of thread engagement, etc.
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:
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:
installing fasteners into threaded aluminum or brass.
The specific torque value should be determined based
Torque values may have to be reduced when
Product Records and Maintenance
Groundsmaster 3500--D
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