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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 for sheet thickness of .040” and 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.
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Flush Head Unthreaded Studs - Types FH, FHS, FHA

Self-Clinching Pins - Type FH, FHS, FHA - Unified
Flush Head Unthreaded Studs - Types FH, FHS, FHA

Self-Clinching Pins - Type FH, FHS, FHA - Unified
Flush Head Unthreaded Studs - Types FH, FHS, FHA

Self-Clinching Pins - Type FH, FHS, FHA - Unified
Flush Head Unthreaded Studs - Types FH, FHS, FHA

Self-Clinching Pins - Type FH, FHS, FHA - Unified
Flush Head Unthreaded Studs - Types FH, FHS, FHA

Self-Clinching Pins - Type FH, FHS, FHA - Unified
Thread Code N/A 073 N/A 084 N/A 094 N/A 103 N/A 106
Length Code N/A 4
Min. Sheet Thickness N/A .040 in
Hole Size in Sheet + .003 - .000 N/A .085 in N/A .099 in N/A .111 in N/A .118 in N/A .125 in
P - Nominal Pin Diameter ± .0021
N/A .073 in a1380.jpg N/A .084 in a1380.jpg N/A .094 in a1380.jpg N/A .103 in a1380.jpg N/A .106 in a1380.jpg
L - Length ± .015 N/A .250 in
H ± .015 N/A .150 in N/A .160 in N/A .180 in N/A .180 in N/A .190 in
S Max.2 N/A .075 in N/A .085 in N/A .085 in N/A .085 in N/A .090 in
Min. Dist. Hole C/L to Edge N/A .19 in N/A .22 in N/A .22 in N/A .22 in N/A .22 in
For Use in Sheet Hardness N/A HRB 80 / HB 150 or less
Fastener Material N/A Heat-Treated 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®)
  • 1 Other pin diameters can be specified.
  • 2 Pin diameter may exceed max. in this region.