Sae Fastener Torque Specifications - CONCORD NT30 Operator's Manual

6.7 SAE fastener torque specifications

The torque specifications below are for UNC and UNF thread fasteners, plated or unplated, as received
from the supplier. Fasteners can be dry or lubricated with normal engine oil. Specifications do not apply if
graphite, moly-disulfide, or other extreme pressure lubricant is used.
SAE Grade
Number
Bolt head
identification
Bolt size Foot pounds
maximum
1/4 in 5 6
5/16 in 10 12
3/8 in 20 23
7/16 in 30 35
1/2 in 45 52
9/16 in 65 75
5/8 in 95 105
3/4 in 150 185
7/8 in 160 200
1 in 250 300
1 1/8 in
1 1/4 in
1 3/8 in
1 1/2 in
Bolt head identification marks as per grade. Manufacturing marks may vary.
Narrow-Transport Grain
Drill (322782B)
2
Newton Foot pounds
meters
7 8 9 11
14 16 17 20.5
27 31 35 42
41 47 54 64
61 70 80 96
88 102 110 132
129 142 150 180
203 251 270 324
217 271 400 480
339 406 580 696
800 880
1120 1240
1460 1680
1940 2200
131
5
Newton Foot pounds
meters
12 15 12 15
23 28 24 29
48 57 45 54
73 87 70 84
109 130 110 132
149 179 160 192
203 244 220 264
366 439 380 456
542 651 600 720
787 944 900 1080
1085 1193 1280 1440
1519 1681 1820 2000
1980 2278 2380 2720
2631 2983 3160 3560
*Thick nuts must be used
with grade-8 bolts.
6. Specifications
GUID-5E106FB4-69CC-43B0-A4F1-C5157229A00D [V1]
8*
Newton
meters
16 20
33 39
61 73
95 114
149 179
217 260
298 358
515 618
814 976
1220 1464
1736 1953
2468 2712
3227 3688
4285 4827