Toyota 4A-FE Repair Manual page 227

B-2 STANDARD BOLT TORQUE SPECIFICATIONS
STANDARD BOLT TORQUE SPECIFICATIONS
HOW TO DETERMINE BOLT STRENGTH
-------------
Mark
Class
-------------
Mark
Class
Hexagon
4-
4T Stud bolt
head bolt
5-
5T
Bolt
6- 6T
~head
No. 7 _
7T
,_~No mark
8-
ST
=
9-
9T
::=
4T
::;::::
::::::
10-
10T ~
11-
11T
I
0
No mark 4T
Hexagon
0
Nomark
flange bolt
w/ washer
4T
Grooved
.-.... ~
hexagon bolt
( j
~
6T
~
Hexagon
C)
~
head bolt
Two
protruding 5T
lines
Hexagon
0
flange bolt
Two
---
w/
washer
protruding 6T
Welded bolt
hexagon bolt
lines
Hexagon
0
head bolt
Three
~
protruding 7T
lines
4T
Hexagon
I
head bolt
Q
Four
protruding
BT
lines