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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.

TFH (non-flush) Studs are for sheets as thin as 0.51mm. They maymore
Thin sheet studs, non flush - TFH, TFHS
Non-Flush Studs - Types TFH, TFHS 2
Unit of Measure
Items Thin sheet studs, non flush - TFH, TFHS
TFH-M3-6ZI
Non-Flush Studs - Types TFH, TFHS - Metric
Thin sheet studs, non flush - TFH, TFHS
TFH-M3-8ZI
Non-Flush Studs - Types TFH, TFHS - Metric
Thin sheet studs, non flush - TFH, TFHS
TFH-M4-8ZI
Non-Flush Studs - Types TFH, TFHS - Metric
Thin sheet studs, non flush - TFH, TFHS
TFH-M5-8ZI
Non-Flush Studs - Types TFH, TFHS - Metric
Thin sheet studs, non flush - TFH, TFHS
TFH-M3-10ZI
Non-Flush Studs - Types TFH, TFHS - Metric
Thread Size x Pitch N/A M3 x 0.5 N/A M3 x 0.5 N/A M4 x 0.7 N/A M5 x 0.8 N/A M3 x 0.5
Thread Code N/A M3 N/A M3 N/A M4 N/A M5 N/A M3
Length Code N/A 6 N/A 8 N/A 8 N/A 8 N/A 10
Material Code N/A
Min. Sheet Thickness N/A 0.51 mm
Hole Size in Sheet + 0.08 N/A 3 mm N/A 3 mm N/A 4 mm N/A 5 mm N/A 3 mm
Max. Hole in Attached Parts N/A 3.3 mm N/A 3.3 mm N/A 4.7 mm N/A 5.3 mm N/A 3.3 mm
L - Length ± 0.41 N/A 6 mm a1377_1.jpg N/A 8 mm a1377_1.jpg N/A 8 mm a1377_1.jpg N/A 8 mm a1377_1.jpg N/A 10 mm a1377_1.jpg
H ± 0.4 N/A 4.50 mm N/A 4.50 mm N/A 5.80 mm N/A 6.4 mm N/A 4.50 mm
S Max.2 N/A 1.80 mm N/A 1.80 mm N/A 1.80 mm N/A 2.30 mm N/A 1.80 mm
T Max. N/A 0.64 mm
Min. Dist. Hole C/L to Edge3 N/A 5.6 mm N/A 5.6 mm N/A 7.2 mm N/A 7.2 mm N/A 5.6 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
Optional Finish4 N/A
CAD Supplier N/A PennEngineering® (PEM®)
  • 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.