Toyota 3b Repair Manual page 258

B-2
STANDARD BOLT TOROUE
SPECIFICATIONS
STANDARD BOLT TOROUE SPECIFICATIONS
HOW
TO
DETERMINE BOLT
STRENGTH
Mark
Class
Mark
Class
Hexagon
head
bolt
Bolt
head No.
4-
5-
6-
7-
4T
5T
6T
7r
Stud
bolt
No mark
4T
No mark
4r
Hexagon
flange
bolt
w/
washer
hexagon bolt
No
mark
4T
6T
Hexagon
head
bolt Two
protrud
ing
lines
5T
Hexagon
flange
bolt
w/
washer
hexagon
bolt
Two
protrud
i
ng
lines
6T
Welded
bolt
4T
Hexagon
head bolt
Three
protruding
lines
7r