Service Manual
2-8
Digital Edition - TITAN® HD Service Manual
January 2018
Table of Contents
SPECIFICATIONS
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (U.S.)
Thread Size Grade 1, 5, &
8 Fasteners
with Thin
Height Nuts
SAE Grade 1 Bolts,
Screws, Studs & Sems
with Regular Height
Nuts (SAE Grade 2 or
Better Nut)
SAE Grade 5 Bolts,
Screws, Studs & Sems
with Regular Height
Nuts (SAE Grade 5 or
Better Nut)
SAE Grade 8 Bolts,
Screws, Studs & Sems
with Regular Height
Nuts (SAE Grade 8 or
Better Nut)
In-lb. In-lb. N-cm In-lb. N-cm In-lb. N-cm
#6-32 UNC
#6-40 UNF
10 ± 2 13 ± 2 147 ± 23 15 ± 2 169 ± 23 23 ± 3 260 ± 34
17 ± 2 192 ± 23 25 ± 3 282 ± 34
#8-32 UNC
#8-36 UNF
13 ± 2 25 ± 5 282 ± 30 29 ± 3 328 ± 34 41 ± 5 463 ± 56
31 ± 4 350 ± 45 43 ± 5 486 ± 56
#10-24 UNC
#10-32 UNF
18 ± 2 30 ± 5 339 ± 56 42 ± 5 475 ± 56 60 ± 6 678 ± 68
48 ± 5 542 ± 56 68 ± 7 768 ± 79
1/4-20 UNC
1/4-28 UNF
48 ± 7 53 ± 7 599 ± 79 100 ± 10 1130 ± 113 140 ± 15 1582 ± 169
53 ± 7 65 ± 10 734 ± 113 115 ± 12 1299 ± 136 160 ± 17 1808 ± 192
5/16-18 UNC
5/16-24 UNF
115 ± 15 105 ± 15 1186 ± 169 200 ± 25 2260 ± 282 300 ± 30 3390 ± 339
138 ± 17 128 ± 17 1446 ± 192 225 ± 25 2542 ± 282 325 ± 33 3672 ± 373
ft-lb. ft-lb. N-m ft-lb. N-m ft-lb. N-m
3/8-16 UNC
3/8-24 UNF
16 ± 2 16 ± 2 22 ± 3 30 ± 3 41 ± 4 43 ± 5 58 ± 7
17 ± 2 18 ± 2 24 ± 3 35 ± 4 47 ± 5 50 ± 6 68 ± 8
7/16-14 UNC
7/16-20 UNF
27 ± 3 27 ± 3 37 ± 4 50 ± 5 68 ± 7 70 ± 7 95 ± 9
29 ± 3 29 ± 3 39 ± 4 55 ± 6 75 ± 8 77 ± 8 104 ± 11
1/2-13 UNC
1/2-20 UNF
30 ± 3 48 ± 7 65 ± 9 75 ± 8 102 ± 11 105 ± 11 142 ± 15
32 ± 4 53 ± 7 72 ± 9 85 ± 9 115 ± 12 120 ± 12 163 ± 16
5/8-11 UNC
5/8-18 UNF
65 ± 10 88 ± 12 119 ± 16 150 ± 15 203 ± 20 210 ± 21 285 ± 28
75 ± 10 95 ± 15 129 ± 20 170 ± 18 230 ± 24 240 ± 24 325 ± 33
3/4-10 UNC
3/4-16 UNF
93 ± 12 140 ± 20 190 ± 27 265 ± 27 359 ± 37 375 ± 38 508 ± 52
115 ± 15 165 ± 25 224 ± 34 300 ± 30 407 ± 41 420 ± 43 569 ± 58
7/8-9 UNC
7/8-14 UNF
140 ± 20 225 ± 25 305 ± 34 430 ± 45 583 ± 61 600 ± 60 813 ± 81
155 ± 25 260 ± 30 353 ± 41 475 ± 48 644 ± 65 667 ± 66 904 ± 89
NOTE: Reduce torque values listed in the table above by 25% for lubricated fasteners. Lubricated
fasteners are dened as threads coated with a lubricant such as oil, graphite, or thread sealant
such as Loctite.
Torque values may have to be reduced when installing fasteners into threaded aluminum or brass.
The specic torque value should be determined based on the fastener size, the aluminum or base
material strength, length of thread engagement, etc.
The nominal torque values listed above for Grade 5 and 8 fasteners are based on 75% of the
minimum proof load specied in SAE J429. The tolerance is approximately ± 10% of the nominal
torque value. Thin nuts include jam nuts.