Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)
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)
Thread Size
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
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: 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
ProCore 648
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