FHS-440-4 is a flush-head self-clinching stud designed for installation in steel or aluminum sheets with a maximum hardness of HRB 70 or HB 125, and a minimum thickness of 0.020 in (0.51 mm). The stud has a #4-40 thread, a shank length of 0.176 in, and installs with a minimum hole size of 0.111 in. The stud head projects 0.025 in above the sheet surface, and the minimum centerline-to-edge distance is 0.131 in. The part is compatible with aluminum, steel, or stainless steel sheets, and the flush head design ensures a secure, permanent installation with high torque-out and pushout resistance.
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-440-4 | FHS-440-4 |
| 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 |
