Komatsu 930E-4 - SAE Grade 5 And Grade 8 Capscrews

STANDARDTIGHTENINGTORQUESSTANDARDCHARTSANDTABLES
SAEGrade5AndGrade8Capscrews
Thefollowingspecicationsapplytorequired
assemblytorquesforallgrade5andgrade8
capscrews.
NOTE:Capscrewthreadsandseatsshallbe
lubricatedwhenassembled.Unlessinstructions
specicallyrecommendotherwise,thesestandard
torquevaluesaretobeusedwithsimplelithiumbase
chassisgrease(multi-purposeEPNLGI)orarust-
preventivegrease(seelist,previouspage)onthe
threads.
NOTE:Torquesarecalculatedtogiveaclamping
forceofapproximately75%ofproofload.The
maximumtorquetoleranceshallbewithin±10%of
thetorquevalueshown.
InthefollowingtableunderCapscrewSize,therst
numberrepresentstheshankdiameter(in.).The
secondnumberrepresentsthreadsperinch.
Example:7/16-20
7/16=shankdiameter(7/16inch(0.438inch))
20=threadsperinch
Table2-2
StandardTighteningTorqueforSAEHex
HeadCapscrewAndNutAssembly
Cap-
screw
Size
Torque
Grade5
Torque
Grade8
N·m
ft·lb
kg·mN·m
ft·lb
kg·m
1/4-20
9.5
7
0.9713.6101.38
1/4-28
10.881.1114.9111.52
5/16-18
20.3152.0728212.90
5/16-24
22162.2130223.04
3/8-16
34253.4647354.84
3/8-24
41304.155440
5.5
7/16-14
5440
5.5
79588.0
7/16-20
61456.284628.57
1/2-13
886591229012.4
1/2-20
95709.71299513.1
9/16-12
1229012.416912517.3
StandardTighteningTorqueforSAEHex
HeadCapscrewAndNutAssembly
Cap-
screw
Size
Torque
Grade5
Torque
Grade8
N·m
ft·lb
kg·mN·m
ft·lb
kg·m
9/16-18
1299513.118313518.7
5/8-11
16912517.323717524.2
5/8-18
18313518.725819026.2
3/4-10
29822030.442031042.8
3/4-16
31923532.545433546.3
7/8-9
47535048.467850069.2
7/8-14
50837551.971953073.3
1.0-871252572.61017750103.7
1.0-1275956077.41071790109.3
1.0-1477357078.81085800110.6
11/8-7
88165089.914241050145
11/8-12
94970096.815461140158
11/4-7
1234910125.920071480205
11/4-12
1322975134.821421580219
13/8-6
1627120016626301940268
13/8-12
1776131018128742120293
11/2-6
2142158021934712560354
11/2-12
2305170023537562770383
2-4
930E-4