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  • Enlarged head diameter reduces stress on panel.
  • Thicker head allows for larger hole in attached panels.
  • Clinch design provides high-strength in sheets as thin as 0.8 mm.
  • Recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 85 or less and HB (Hardness Brinell) 165 or less.
Unit of Measure

Thread Size x Pitch

 M8 x 1.25

Thread Code

 M8

Length Code

 40

Min. Sheet Thickness

 0.8 mm

Hole Size in Sheet + 0.13

 8 mm
L - Length ± 0.41
40 mm
Heavy-Duty-Studs-for-Thin-Sheets---Type-THFE-2_1.jpg

H ± 0.25

 15.3 mm
S Max.2 2.90 mm

T Max.

 2.54 mm

Max. Hole in Attached Parts

 10.3 mm
Min. Dist. Hole C/L to Edge3 15 mm

Thread Strength

 900 MPa

For Use in Sheet Hardness

 HRB 85 / HB 165 or Less

Thread Specification

 External, ASME B1.13M, 6g

Fastener Material

 Hardened Carbon Steel

Standard Finish

 Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

CAD Supplier

 PennEngineering® (PEM®)

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  • 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.