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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.
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Unit of Measure
Items
Flush-Head Studs for Stainless Steel Sheets - Type FH4,FHP

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

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

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

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

Self-Clinching Studs for Stainless Steel Sheets - Types FH4™ and FHP™ - Unified
Thread Size N/A .112-40 (#4-40) N/A .138-32 (#6-32) N/A .164-32 (#8-32) N/A .112-40 (#4-40) N/A .138-32 (#6-32)
Thread Code N/A 440 N/A 632 N/A 832 N/A 440 N/A 632
Length Code N/A 4 N/A 4 N/A 4 N/A 5 N/A 5
Material Code N/A 4
Sheet Thickness N/A .040 to .095 in
Hole Size in Sheet + .003 - .000 N/A .111 in N/A .137 in N/A .163 in N/A .111 in N/A .137 in
Max. Hole in Attached Parts N/A .131 in N/A .157 in N/A .183 in N/A .131 in N/A .157 in
L - Length ± .0151
N/A .250 in a1375_1.jpg N/A .250 in a1375_1.jpg N/A .250 in a1375_1.jpg N/A .312 in a1375_1.jpg N/A .312 in a1375_1.jpg
H ± .015 N/A .176 in N/A .206 in N/A .237 in N/A .176 in N/A .206 in
S Max.2 N/A .085 in N/A .090 in N/A .090 in N/A .085 in N/A .090 in
Min. Dist. Hole C/L to Edge3 N/A .219 in N/A .250 in N/A .281 in N/A .219 in 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®)
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.