FH-M2.5-18ZI

Self-Clinching Threaded Studs – Type FH/FHS/FHA

FH-M2.5-18ZI

Self-Clinching Threaded Studs – Type FH/FHS/FHA

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.- Flush-head in designated minimum sheet thickness or greater.

  • Type FH is recommended for use in steel or aluminum sheets HRB (Rockwell “B” scale) 80 or less and HB (Hardness Brinell) 150 or less.
  • Type FHS is recommended for use in steel or aluminum sheets HRB (Rockwell “B” scale) 70 or less and HB (Hardness Brinell) 125 or less.
  • Type FHA is recommended for use in aluminum sheets HRB (Rockwell “B” scale) 50 or less and HB (Hardness Brinell) 82 or less.

Specifications

Thread Code
M2.5
Thread Size
M2.5 x 0.45
Thread Size X Pitch
M2.5 x 0.45
Thread Specification
6g, ASME B1.13M, External
Fastener Material
Carbon Steel, Heat-Treated Carbon Steel
Standard Finish
colorless, SC1 (5µm), Type III, Zinc plated per ASTM B633, Zinc plus Clear Chromate
For Use in Sheet Hardness
HRB 80 / HB 150 or less
Length Code
18
Product Category
Self-Clinching Threaded Studs – Type FH/FHS/FHA
CAD Supplier
PennEngineering® (PEM®)
CADPartID
103709
PEM Product Family
FH
Unit (Metric/Unified)
Metric
H ± 0.4_mm
4.10mm
Hole Size in Sheet + 0.08_mm
2.50mm
L Len Pm 015in Or 4mm
18mm
Max. Hole in Attached Parts_mm
3.10mm
Min. Dist. Hole C/L to Edge_mm
5.40mm
Min. Sheet Thickness_mm
1mm
S Max._mm
1.95mm

Resources

Installation & Performance Data

fh-fh-fhs-studs-metric
TYPE THREAD CODE REC. NUT TIGHTENING TORQUE (N•m) TEST SHEET THICKNESS & MATERIAL SHEET HARDNESS HRB INSTALLATION (kN) PUSHOUT (N) TORQUE-OUT (N•m) PULL THRU (N)
FH M2.5 0.78 1.6 mm Aluminum 29 8.9 465 1.0 2600
FH M2.5 0.84 1.5 mm Steel 59 11.1 740 1.0 2800

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