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
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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.

FHL (flush low-displacement head) Studs install closer to the edgemore
Flush-head, low displacement studs - FHL, FHLS
Low-Displacement Head Studs - Types FHL, FHLS 2
Unit of Measure
Items Flush-head, low displacement studs - FHL, FHLS
FHL-M2.5-6ZI
Low-Displacement Head Studs - Types FHL, FHLS - Metric 		Flush-head, low displacement studs - FHL, FHLS
FHL-M3-6ZI
Low-Displacement Head Studs - Types FHL, FHLS - Metric 		Flush-head, low displacement studs - FHL, FHLS
FHL-M3.5-6ZI
Low-Displacement Head Studs - Types FHL, FHLS - Metric 		Flush-head, low displacement studs - FHL, FHLS
FHL-M4-6ZI
Low-Displacement Head Studs - Types FHL, FHLS - Metric 		Flush-head, low displacement studs - FHL, FHLS
FHL-M2.5-8ZI
Low-Displacement Head Studs - Types FHL, FHLS - Metric
Thread Size x Pitch N/A M2.5 x 0.45 N/A M3 x 0.5 N/A M3.5 x 0.6 N/A M4 x 0.7 N/A M2.5 x 0.45
Thread Code N/A M2.5 N/A M3 N/A M3.5 N/A M4 N/A M2.5
Length Code N/A 6 N/A 6 N/A 6 N/A 6 N/A 8
Material Code N/A
Min. Sheet Thickness N/A 1.0 mm
Hole Size in Sheet + 0.08 N/A 2.5 mm N/A 3.0 mm N/A 3.5 mm N/A 4 mm N/A 2.5 mm
Max. Hole in Attached Parts N/A 2.90 mm N/A 3.40 mm N/A 3.90 mm N/A 4.40 mm N/A 2.90 mm
L - Length ± 0.4 N/A 6 mm a1376.jpg N/A 6 mm a1376.jpg N/A 6 mm a1376.jpg N/A 6 mm a1376.jpg N/A 8 mm a1376.jpg
H ± 0.4 N/A 3.15 mm N/A 3.65 mm N/A 4.15 mm N/A 4.65 mm N/A 3.15 mm
S Max.1 N/A 2.1 mm N/A 2.1 mm N/A 2.30 mm N/A 2.4 mm N/A 2.1 mm
Min. Dist. Hole C/L to Edge N/A 2.80 mm N/A 3.3 mm N/A 3.80 mm N/A 4.3 mm N/A 2.80 mm
For Use in Sheet Hardness N/A HRB 80 / HB 150 or less
Thread Specification N/A External, ASME B1.13M, 6g
Fastener Material N/A Heat-Treated Carbon Steel
Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
CAD Supplier N/A PennEngineering® (PEM®)
  • 1 Threads are gageable to within 2 pitches of the “S” Max. dimension. A class 3B/5H maximum material commercial nut shall pass up to the “S” Max. dimension.