PennEngineering
PennEngineering
Corporate Headquarters – Danboro, PA
5190 Old Easton Rd.
Danboro, PA 18916
Phone: 215-766-8853
Toll-Free Phone: 1-800-237-4736 (U.S. only)
Email: info@pemnet.com
Website: www.pemnet.com
Print Back
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 1.00 mm 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.
Flush Head Unthreaded Studs - Types FH, FHS, FHA
Self-Clinching Pins - Type FH, FHS, FHA 2
Unit of Measure
1 2 3 4 5 

Part #

Hole Size in Sheet +0.08

P - Nominal Pin Diameter ± 0.05

L - Length ± 0.4

H ± 0.4

Fastener Material

Standard Finish

Optional Finish

CAD

FHA-3MM-25 N/A 3.5 mm N/A 3.00 mm N/A 25 mm N/A 5.3 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
FHA-4MM-25 N/A 4.10 mm N/A 4.00 mm N/A 25 mm N/A 6 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
FHA-5MM-25 N/A 5.5 mm N/A 5.00 mm N/A 25 mm N/A 7.50 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
FHA-3MM-30 N/A 3.5 mm N/A 3.00 mm N/A 30 mm N/A 5.3 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
FHA-4MM-30 N/A 4.10 mm N/A 4.00 mm N/A 30 mm N/A 6 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
FHA-5MM-30 N/A 5.5 mm N/A 5.00 mm N/A 30 mm N/A 7.50 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
FHA-4MM-35 N/A 4.10 mm N/A 4.00 mm N/A 35 mm N/A 6 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
FHA-5MM-35 N/A 5.5 mm N/A 5.00 mm N/A 35 mm N/A 7.50 mm N/A Aluminum (Plain Finish) N/A No Finish N/A N/A CAD Icon (for items table)
Unit of Measure
1 2 3 4 5