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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.

HFE (heavy-duty) Studs are designed with an enlarged head diameter which projects above the sheet material and provides maximum pull through in sheets as thin as 1.00 mm.
  • Enlarged head diameter provides high-strength in sheets as thin as 1.00 mm.
  • Recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 85 or less and HB (Hardness Brinell) 165 or less.
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Unit of Measure
Items
Heavy duty studs, non flush - HFE

High-Strength Studs for Thin Sheets - Type HFE - Metric
Heavy duty studs, non flush - HFE

High-Strength Studs for Thin Sheets - Type HFE - Metric
Heavy duty studs, non flush - HFE

High-Strength Studs for Thin Sheets - Type HFE - Metric
Heavy duty studs, non flush - HFE

High-Strength Studs for Thin Sheets - Type HFE - Metric
Heavy duty studs, non flush - HFE

High-Strength Studs for Thin Sheets - Type HFE - Metric
Thread Size x Pitch N/A M5 x 0.8 N/A M6 x 1 N/A M8 x 1.25 N/A M5 x 0.8 N/A M6 x 1
Thread Code N/A M5 N/A M6 N/A M8 N/A M5 N/A M6
Length Code N/A 15 N/A 15 N/A 15 N/A 20 N/A 20
Min. Sheet Thickness N/A 1 mm N/A 1 mm N/A 1.5 mm N/A 1 mm N/A 1 mm
Hole Size in Sheet + 0.13 N/A 5 mm N/A 6 mm N/A 8 mm N/A 5 mm N/A 6 mm
L - Length ± 0.41
N/A 15 mm a1378_1.jpg N/A 15 mm a1378_1.jpg N/A 15 mm a1378_1.jpg N/A 20 mm a1378_1.jpg N/A 20 mm a1378_1.jpg
H ± 0.25 N/A 9.6 mm N/A 11.35 mm N/A 15.3 mm N/A 9.6 mm N/A 11.35 mm
S Max.2 N/A 2.6 mm N/A 2.8 mm N/A 3.3 mm N/A 2.6 mm N/A 2.8 mm
T Max. N/A 1.35 mm N/A 1.52 mm N/A 2.13 mm N/A 1.35 mm N/A 1.52 mm
Max. Hole in Attached Parts N/A 7.3 mm N/A 8.3 mm N/A 10.3 mm N/A 7.3 mm N/A 8.3 mm
Min. Dist. Hole C/L to Edge3 N/A 10 mm N/A 11.5 mm N/A 14.5 mm N/A 10 mm N/A 11.5 mm
Thread Strength N/A 900 MPa
For Use in Sheet Hardness N/A HRB 85 / HB 165 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
Optional Finish4 N/A
CAD Supplier N/A PennEngineering® (PEM®)
Inventory N/A {0} N/A {0} N/A {0} N/A {0} N/A {0}
  • 1 The “L” dimension is the height of the installed stud at max grip. The height of the stud will increase if it is installed into thinner material. To calculate “actual L” use this formula: max grip - actual grip + L = “actual L”
  • 2 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.
  • 3 To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
  • 4 “BL” suffix will be added to part number to designate DuraBlack™ finish.