Top washer has the following features:
The Working Load Limit and Recommended Torque value are permanently stamped
into each washer.
Washer is color coded for easy identification: Red - UNC thread.
Individually Proof Tested to 2-1/2 times Working Load Limit.
Bolt specification is an Alloy socket head cap screw to ASTM A 574.
All threads listed are UNC. Illustration shows meaning of each dimension given.
BOLT SIZE IDENTIFICATION: The size of the bolt will be stated as in the drawing below.
NOTE: For Special Applications, see page 473.
Frame 2 and larger are RFID EQUIPPED.