HOW TO DETERMINE BOLT STRENGTH
No mark
ing lines
Three protrud-
Welded bolt
bolt
Hexagon head
flange bolt
Hexagon
lines
Two protruding
6
INTRODUCTION
GENERAL INFORMATION (Continued)
Hexagon head bolt
hexagon bolt
w/washer
flange bolt
Hexagon
bolt
Hexagon head
Hexagon head bolt
hexagon bolt
w/washer
lines
Four protruding
Bolt head No.
FASTENER STRENGTH
No mark
Two protruding lines
Stud bolt
Grooved
No mark
PL