TR Self-Clinch Stud Installation

The TR Self-Clinch stud design is based around the clinch nut features and installation principles but offers a male thread cut to customer length requirements.





Self Clinch Stud Installation Step 1 Self Clinch Stud Installation Step 2 Self Clinch Stud Installation Step 3 Self Clinch Stud Installation Step 4
Select the appropriate hole size from the table below for the stud size required. Punch the hole diameter into the sheet material and place the material on top of the appropriate anvil. Place the stud so that the head serrations rest on the parent material. Ensure both plate and stud are aligned along the same axis. If not, the joint will be imperfect and mating threads will mis-align.  Using a flat faced profiled punch, apply only sufficient pressure to ‘squeeze’ the stud head and its underhead tooth features into the parent sheet metal.  The tooth locking feature if properly installed will provide torsional (rotational) resistance. After installation the spigot joint should be flush with the sheet metal
Click on the play button to watch the installation animation.

Using the table below with reference to the specific size of the Clinch Stud, select the correct Hole size for the installation of the fastener.

For the best dimensional accuracy and therefore performance, TR Fastenings recommends that all holes in the sheet metal application be punched.

Hole Sizes - Metric (mm)

Thread size M3 M4 M5 M6 M8
Min rec sheet thickness 1.0 1.0 1.0 1.6 2.4
Hole +0.08 -0.0 3.0 4.0 5.0 6.0 8.0
Min distance to edge of sheet 5.6 7.2 7.2 7.9 9.0

Hole Sizes - Inch (inches)

Imperial Dimensions
Thread size 4 6 8 10
Min rec sheet thickness 0.40 .040 .040 .040
Hole +0.08 -0.0 .111 .137 .163 .189
Min distance to edge of sheet .220 .250 .280 .280

Tooling - Standard

Sheet Thickness: up to 1.5mm for M3 to M5 threads 1.51mm to 2.4mm for M6 thread
Self Clinch Stud Punch Anvil Diagram 1 Thread Size D mm +0.08 B mm +0.1
M2.5 2.53 3.1
M3 3.03 3.6
M3.5 3.53 4.1
M4 4.03 4.6
M5 5.03 5.6
M6 6.03 6.6
M8 8.03 -


Sheet Thickness: 1.51mm to 2.4mm for M3 to M5 threads over 2.4mm for M6 & M8 threads
Self Clinch Stud Punch Anvil Diagram 2    Thread Size D mm +0.08
M2.5 2.53
M3 3.03
M3.5 3.53
M4 4.03
M5 5.03
M6 6.03
M8 8.03

Tooling - Hard Stainless

Self Clinch Stud Punch Anvil Diagram 3        Self Clinch Stud Punch Anvil Diagram 4
Thread Size A mm +0.08 B mm +/-0.05  C mm +/-0.05 P mm +/-0.025 R1 Max. R2 Max.
M3 3.05 3.81 4.57 0.25 0.08 0.13
M4 4.04 4.95 5.82 0.25 0.08 0.13
M5 5.08 6.15 7.16 0.25 0.08 0.13
M6 6.05 7.87 8.79 0.51 0.08 0.13


Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.