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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 .040” . 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.
Unit of Measure

Thread Size

 N/A .138-32 (#6-32)

Thread Code

 N/A 632

Length Code

 N/A 4

Material Code

 N/A 4

Sheet Thickness

 N/A .040 to .095 in

Hole Size in Sheet + .003 - .000

 N/A .137 in

Max. Hole in Attached Parts

 N/A .157 in

L - Length ± .015

 N/A .250 in a1375.jpg

H ± .015

 N/A .206 in
S Max.1 N/A .090 in

Min. Dist. Hole C/L to Edge

 N/A .250 in

For Use in Sheet Hardness

 N/A HRB 92 / HB 195 or Less

Thread Specification

 N/A External, ANSI B1.1, 2A

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®)
  • 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.