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PEM® self-clinching, flush-head studs with X-Press™ threads are typically used with push-on or other plastic fasteners. The coarse thread design of the thread reduces assembly time and provides high retention force.
These self-clinching studs are installed in metal sheets by pressing them into place with any standard press. They can also be installed using automated equipment during the in-die process.
PEM® studs with X-Press™ threads are available with 5 mm and 6 mm metric threads. Lengths range from 10 mm to 25 mm.



Features and Benefits
  • Offers fast, reliable attachment.
  • Reduces assembly time.
  • Allows for lighter assembly.
  • Self-clinching stud mounts flush in metal sheets as thin as 1mm.
  • Thread design accommodates paints and coatings without compromising performance.
  • Self-clinching technology is cleaner and has a more attractive finished appearance than welding.
  • Can be installed during the stamping process with PEMSERTER® in-die technology.
Flush Head Studs Type FHX
Flush Head Studs Type FHX_2
Unit of Measure
Items Flush Head Studs Type FHX
FH-X5-10ZI
Flush-Head Studs with X-Press™ Thread Profile – Type FHX – Metric
Flush Head Studs Type FHX
FH-X6-10ZI
Flush-Head Studs with X-Press™ Thread Profile – Type FHX – Metric
Flush Head Studs Type FHX
FH-X5-15ZI
Flush-Head Studs with X-Press™ Thread Profile – Type FHX – Metric
Flush Head Studs Type FHX
FH-X6-15ZI
Flush-Head Studs with X-Press™ Thread Profile – Type FHX – Metric
Flush Head Studs Type FHX
FH-X5-20ZI
Flush-Head Studs with X-Press™ Thread Profile – Type FHX – Metric
Thread Size x Pitch N/A 5 mm x 1.6 N/A 6 mm x 1.6 N/A 5 mm x 1.6 N/A 6 mm x 1.6 N/A 5 mm x 1.6
Thread Code N/A X5 N/A X6 N/A X5 N/A X6 N/A X5
Length Code N/A 10 N/A 10 N/A 15 N/A 15 N/A 20
Material Code N/A
Min. Sheet Thickness N/A 1.0 mm N/A 1.6 mm N/A 1.0 mm N/A 1.6 mm N/A 1.0 mm
Hole Size in Sheet + 0.08 N/A 5.2 mm N/A 6.2 mm N/A 5.2 mm N/A 6.2 mm N/A 5.2 mm
Max. Hole in Attached Parts N/A
L - Length ± 0.4 N/A 10 mm Flush-Head-StudsType-FHX-2.jpg N/A 10 mm Flush-Head-StudsType-FHX-2.jpg N/A 15 mm Flush-Head-StudsType-FHX-2.jpg N/A 15 mm Flush-Head-StudsType-FHX-2.jpg N/A 20 mm Flush-Head-StudsType-FHX-2.jpg
H ± 0.4 N/A 6.5 mm N/A 8.2 mm N/A 6.5 mm N/A 8.2 mm N/A 6.5 mm
S Max. N/A 4 mm
Min. Dist. Hole C/L to Edge N/A
For Use in Sheet Hardness N/A HRB 80 / HB 150 or less
Thread Specification N/A
Fastener Material N/A Hardened Carbon Steel
Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
Optional Finish N/A
CAD Supplier N/A PennEngineering® (PEM®)