Part # FH-103-4ZI, Self-Clinching Pins - Type FH, FHS, FHA

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.

FH (flush-head) studs are available in aluminum, steel, or stainless steel . They are also available unthreaded on special order.

Flush-head for sheet thickness of .040” and greater.
Type FH is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 80 or less and HB (Hardness Brinell) 150 or less.
Type FHS is recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 70 or less and HB (Hardness Brinell) 125 or less.
Type FHA is recommended for use in aluminum sheets HRB (Rockwell “B” Scale) 50 or less and HB (Hardness Brinell) 82 or less.

Unit of Measure

Specifications

Pin Dia. Code	N/A 103
Length Code	N/A 4
Min. Sheet Thickness	N/A .040 in
Hole Size in Sheet + .003 - .000	N/A .118 in
P - Nominal Pin Diameter ± .002¹	N/A .103 in
L - Length ± .015²	N/A .250 in
H ± .015	N/A .180 in
S Max.³	N/A .085 in
Min. Dist. Hole C/L to Edge⁴	N/A .22 in
For Use in Sheet Hardness	N/A HRB 80 / HB 150 or less
Fastener Material	N/A Heat-Treated Carbon Steel
Standard Finish	N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
CAD Supplier	N/A PennEngineering® (PEM®)
Inventory	N/A {0}

¹ Other pin diameters can be specified.
² 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”
³ Pin diameter may exceed max. in this region.
⁴ To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.

Specifications

Pin Dia. Code

Length Code

Min. Sheet Thickness

Hole Size in Sheet + .003 - .000

H ± .015

For Use in Sheet Hardness

Fastener Material

Standard Finish

CAD Supplier

Inventory