FHS-440-6 is a flush-head self-clinching stud designed for installation in steel or aluminum sheets as thin as 0.020 in (0.51 mm), with a recommended maximum hardness of HRB 70 or HB 125. The stud has a #4-40 thread and features a clinching profile that ensures high torque-out and pushout resistance. It installs permanently with a standard press, embedding the head into the sheet to form a flush assembly. The stud head projects slightly above the sheet surface to distribute clamping force, and its design accommodates secure fastening in thin materials without requiring additional hardware.
PEM® self-clinching studs are installed by placing them in properly sized holes in the sheets and squeezing into place with any standard press. The squeezing action embeds the head of the stud into the sheet. The metal displaced by the head flows smoothly and evenly around the ribs and into the annular groove – creating a flushhead assembly and securely locking the stud into the sheet with high torque-out and pushout resistances.
FH (flush-head) studs are available in aluminum, steel, or stainless steel . They are also available unthreaded on special order.
| PennEngineering® | bisco industries | |
|---|---|---|
| Product Category | Studs | Studs |
| Product Number | FHS-440-6 | FHS-440-6 |
| Product Name | Self-Clinching Threaded Studs - Type FH/FHS/FHA - Unified | Threaded Rods and Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | English | English |
| Inch | # 4 | # 4 |
