Guidelines for Mounting Torque
Please note: The following are guidelines only. Installer should follow the fastener manufacturers' recommended torque values and consider the fastener grade/class, materials and surface condition of the threads.
Description Use Mounting Torque
M6mm brass inserts Push button handles 50 to 59 in. lbs. or 5.6 to 6.7 N-m
M8mm brass inserts Push button handles 59 to 70 in. lbs. or 6.7 to 7.9 N-m
1/4-20 UNC grade 5 Latches 96 to 120 in. lbs. or 10.7 to 13.3 N-m
M6x1 Class 8.8 Latches 96 to 120 in. lbs. or 10.7 to 13.3 N-m
M8x1.25 Class 8.8 Latches 200 in. lbs. or 22.2 N-m
3/8-16 UNC grade 8 Striker bolts 35 ft. lbs or 46.7 N-m
7/16-14 UNC grade 8 Striker bolts 56 ft. lbs. or 74.7 N-m
1/2-13 UNC grade 8 Striker bolts 85 ft. lbs. or 113.3 N-m
M12x1.75 grade 9.8 Striker bolts 85 ft. lbs. or 113.3 N-m
#8-32 thread forming screws Die cast paddles 40 to 50 in. lbs. or 4.4 to 5.6 N-m
#10-24 thread forming screws Die cast paddles 40 to 50 in. lbs. or 4.4 to 5.6 N-m
TriMark Corp recommends a specific torque to our customers for the installation of hardware. These recommendations are only guidelines to be used by the customer to develop required torque for their application due to the fact that TriMark does not have control over finish use of a thread locker (i.e. Loctite), or RPM used to install fasteners. Please keep in mind the above data was developed using hand operated torque wrenches at between 60-150 RPM. Use of a higher RPM or a thread locker will greatly reduce recommended torque values.
Customers should use the information provided by TriMark to develop their own recommendations. This can be done by inserting the desired fastner at the RPM used in production. The fastener should be torqued to failure. The target torque value, using the above method, would be 40% of failure torque.
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