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SPECIFICATIONS
Standard Torque for Dry, Zinc Plated, and 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
2
# 6 - 32 UNC
# 6 - 40 UNF
# 8 - 32 UNC
# 8 - 36 UNF
# 10 - 24 UNC
#10 - 32 UNF
1/4 - 20 UNC
1/4 - 28 UNF
5/16 - 18 UNC
5/16 - 24 UNF
3/8 - 16 UNC
3/8 - 24 UNF
7/16 - 14 UNC
7/16 - 20 UNF
1/2 - 13 UNC
1/2 - 20 UNF
5/8 - 11 UNC
5/8 - 18 UNF
3/4 - 10 UNC
3/4 - 16 UNF
7/8 - 9 UNC
7/8 - 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: 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.
2-8
SAE Grade 1 Bolts, Screws,
Studs, & Sems with Regular
Height Nuts (SAE J995
Grade 2 or Stronger Nuts)
In-lb
N-cm
10 ± 2
13 ± 2
13 ± 2
25 ± 5
18 ± 2
30 ± 5
48 ± 7
53 ± 7
53 ± 7
65 ± 10
115 ± 15
105 ± 17
138 ± 17
128 ± 17
ft-lb
ft-lb
16 ± 2
16 ± 2
17 ± 2
18 ± 2
27 ± 3
27 ± 3
29 ± 3
29 ± 3
30 ± 3
48 ± 7
32 ± 3
53 ± 7
65 ± 10
88 ± 12
75 ± 10
95 ± 15
93 ± 12
140 ± 20
115 ± 15
165 ± 25
140 ± 20
225 ± 25
155 ± 25
260 ± 30
SAE Grade 5 Bolts, Screws,
Studs, & Sems with Regular
Height Nuts (SAE J995
Grade 2 or Stronger Nuts)
In-lb
15 ± 2
147 ± 23
17 ± 2
29 ± 3
282 ± 30
31 ± 3
42 ± 4
339 ± 56
48 ± 4
599 ± 79
100 ± 10
734 ± 113
115 ± 10
1186 ± 169
200 ± 25
1446 ± 192
225 ± 25
N-m
ft-lb
22 ± 3
30 ± 3
24 ± 3
35 ± 3
37 ± 4
50 ± 5
39 ± 4
55 ± 5
65 ± 9
75 ± 8
72 ± 9
85 ± 8
119 ± 16
150 ± 15
129 ± 20
170 ± 15
190 ± 27
265 ± 25
224 ± 34
300 ± 25
305 ± 34
430 ± 45
353 ± 41
475 ± 45
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
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)
N-cm
In-lb
170 ± 20
23 ± 2
190 ± 20
25 ± 2
330 ± 30
41 ± 4
350 ± 30
43 ± 4
475 ± 45
60 ± 6
540 ± 45
68 ± 6
1125 ± 100
140 ± 15
1300 ± 100
160 ± 15
2250 ± 280
300 ± 30
2540 ± 280
325 ± 30
N-m
ft-lb
41 ± 4
43 ± 4
47 ± 4
50 ± 4
68 ± 7
70 ± 7
75 ± 7
77 ± 7
102 ± 11
105 ± 10
115 ± 11
120 ± 10
203 ± 20
210 ± 20
230 ± 20
240 ± 20
359 ± 34
374 ± 35
407 ± 34
420 ± 35
583 ± 61
600 ± 60
644 ± 61
660 ± 60
± 10% of the nominal torque
Z580/Z593/Z595 Diesel Service Manual
N-cm
260 ± 20
280 ± 20
2
460 ± 45
31 ± 3
674 ± 70
765 ± 70
1580 ± 170
1800 ± 170
3390 ± 340
3670 ± 340
N-m
58 ± 5
68 ± 5
68 ± 9
104 ± 9
142 ± 14
163 ± 14
285 ± 27
325 ± 27
508 ± 47
569 ± 47
813 ± 81
895 ± 81
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