Technical Product Information
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. does not recommend the use of any type of thread locking materials on the mounting fasteners for any of our hardware unless previously reviewed and approved by TM Engineering.
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. |