HR-1000 UNC Threads
HR-1000 Metric Threads
* Ultimate Load is 5 times the Working Load Limit.
** Ultimate Load is 4.5 times the Working Load Limit for 7000# Hoist Ring when tested in 90 degree orientation.
*** Individually proof loaded to 2-1/2 times the Working Load Limit based on the 4:1 design factor. † Long Bolts are designed to be used with soft metal (i.e., aluminum) work piece. While the long bolts may also be used with ferrous metal (i.e.,steel & iron) work piece, short bolts are designed for ferrous work pieces only.
‡ Bolt specification is a Grade 8 Alloy socket head cap screw to ASTM A 574. ‡‡ Bolt specification is a Grade 12.9 Alloy socket head cap screw to DIN 912.
Note: The tightening torque values shown are based upon threads being clean, dry and free of lubrication.