FHA-0420-10

Self-Clinching Threaded Studs – Type FH/FHS/FHA

FHA-0420-10

Self-Clinching Threaded Studs – 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 in designated minimum sheet thickness or 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.

Specifications

Thread Code
0420
Thread Size
.250-20 (1/4-20), 1/4-20
Thread Specification
2A, ANSI B1.1, External
Fastener Material
Aluminum, Aluminum (Plain Finish)
Material Code
A
Standard Finish
No Finish
For Use in Sheet Hardness
HRB 50 / HB 82 or Less
Length Code
10
Product Category
Self-Clinching Threaded Studs – Type FH/FHS/FHA
CAD Supplier
PennEngineering® (PEM®)
CADPartID
103708
PEM Product Family
FH
Unit (Metric/Unified)
Unified
H ± .015_in
.337in
Hole Size in Sheet + .003 – .000_in
.249in
L Len Pm 015in Or 4mm
.625in, 0.625in
Max. Hole in Attached Parts_in
.270in
Min. Dist. Hole C/L to Edge_in
.312in
Min. Sheet Thickness_in
.062in
S Max._in
.135in

Resources

Installation & Performance Data

fh-fha-studs-unified
TYPE THREAD CODE REC. NUT TIGHTENING TORQUE (in. lbs.) TEST SHEET THICKNESS & MATERIAL SHEET HARDNESS HR15T INSTALLATION (lbs.) PUSHOUT (lbs.) TORQUE-OUT (in. lbs.) PULL THRU (lbs.)
FHA 0420 32 .062" 5052-H34 Aluminum 75 5500 300 55 1050

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