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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.

FH4 & FHP (flush-head) Studs for Stainless Steel are designed to provide strong threads in stainless steel sheets as thin as 1.00 mm . Type FHP studs have high corrosion resistance. Both types are designed for use in stainless steel sheets with a hardness of 92 or less on the Rockwell “B” scale
  • Recommended for use in stainless steel sheets HRB (Rockwell “B” Scale) 92 or less and HB (Hardness Brinell) 195 or less.
  • Type FHP offers high corrosion resistance and ideal for medical, foodservice, and marine applications.
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Flush-Head Studs for Stainless Steel Sheets - Type FH4,FHP

Self-Clinching Studs for Stainless Steel Sheets - Types FH4™ and FHP™ - Metric
Flush-Head Studs for Stainless Steel Sheets - Type FH4,FHP

Self-Clinching Studs for Stainless Steel Sheets - Types FH4™ and FHP™ - Metric
Flush-Head Studs for Stainless Steel Sheets - Type FH4,FHP

Self-Clinching Studs for Stainless Steel Sheets - Types FH4™ and FHP™ - Metric
Flush-Head Studs for Stainless Steel Sheets - Type FH4,FHP

Self-Clinching Studs for Stainless Steel Sheets - Types FH4™ and FHP™ - Metric
Flush-Head Studs for Stainless Steel Sheets - Type FH4,FHP

Self-Clinching Studs for Stainless Steel Sheets - Types FH4™ and FHP™ - Metric
Thread Size x Pitch N/A M3 x 0.5 N/A M4 x 0.7 N/A M3 x 0.5 N/A M4 x 0.7 N/A M5 x 0.8
Thread Code N/A M3 N/A M4 N/A M3 N/A M4 N/A M5
Length Code N/A 6 N/A 6 N/A 8 N/A 8 N/A 8
Material Code N/A 4
Sheet Thickness N/A 1.00 to 2.40 mm
Hole Size in Sheet + 0.08 N/A 3 mm N/A 4 mm N/A 3 mm N/A 4 mm N/A 5 mm
Max. Hole in Attached Parts N/A 3.3 mm N/A 4.7 mm N/A 3.3 mm N/A 4.7 mm N/A 5.3 mm
L - Length ± 0.41
N/A 6 mm a1375_1.jpg N/A 6 mm a1375_1.jpg N/A 8 mm a1375_1.jpg N/A 8 mm a1375_1.jpg N/A 8 mm a1375_1.jpg
H ± 0.4 N/A 4.60 mm N/A 5.90 mm N/A 4.60 mm N/A 5.90 mm N/A 6.5 mm
S Max.2 N/A 2.10 mm N/A 2.4 mm N/A 2.10 mm N/A 2.4 mm N/A 2.7 mm
Min. Dist. Hole C/L to Edge3 N/A 5.6 mm N/A 7.2 mm N/A 5.6 mm N/A 7.2 mm N/A 7.2 mm
For Use in Sheet Hardness N/A HRB 92 / HB 195 or Less
Thread Specification N/A External, ASME B1.13M, 6g
Fastener Material N/A 400 Series Stainless Steel
Standard Finish N/A Passivated and/or tested per ASTM A380
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.