THFE-0420-20ZI

Heavy Duty Studs for Thin Sheets – Type THFE

THFE-0420-20ZI

Heavy Duty Studs for Thin Sheets – Type THFE

  • Enlarged head diameter reduces stress on panel.
  • Thicker head allows for larger hole in attached panels.
  • Clinch design provides high-strength in sheets as thin as .031”.
  • Recommended for use in steel or aluminum sheets HRB (Rockwell “B” Scale) 85 or less and HB (Hardness Brinell) 165 or less.

Specifications

Thread Code
420
Thread Size
1/4-20
Thread Specification
2A, ASME B1.1, External
Fastener Material
Carbon Steel
Standard Finish
Zinc plus Clear Chromate
For Use in Sheet Hardness
HRB 85 / HB 165 or Less
Length Code
20
Thread Strength_ksi
120
Product Category
Heavy Duty Studs for Thin Sheets – Type THFE
CAD Supplier
PennEngineering® (PEM®)
CADPartID
110705
Application Type
Aerospace, Automotive, Automotive Electronics, Commercial Vehicles, Datacom, Electric Vehicle Chargers, Electric Vehicles, Industrial, Manufacturing & Sheet Metal Fabrication, Telecom
Base Panel Material
Aluminum, Steel
Brand
PEM
Fastener Characteristics
Threaded External
Industry
Automotive, Automotive Electronics, Datacom & Telecom, Defense, Electric Vehicles, Industrial & Commercial, Medical
Installation Equipment/Method
C-Frame Automatic Feed, C-Frame Manual Feed, In-Die
PEM Product Family
FH
Product Type
Studs
Technology Type
Self-Clinching
Unit (Metric/Unified)
Unified
H ± .01_in
0.462in
Hole Size in Sheet + .005 – .000_in
0.25in
L Len Pm 015in Or 4mm
1.25in
Max. Hole in Attached Parts_in
0.34in
Min. Dist. Hole C/L to Edge_in
0.446in
Min. Sheet Thickness_in
0.031in
S Max._in
0.109in
T Max._in
0.069in

Resources

Installation & Performance Data

fh-thfe-studs-unified
TYPE THREAD CODE REC. NUT TIGHTENING TORQUE (ft. lbs.) TEST SHEET THICKNESS & MATERIAL SHEET HARDNESS HRB INSTALLATION (lbs.) PUSHOUT (lbs.) TORQUE-OUT (in. lbs.) TENSILE STRENGTH (lbs.) PULL THRU (lbs.) TEST BUSHING HOLE SIZE FOR PULL THRU TESTS (in.)
THFE 0420 8.1 .031" Aluminum 35 8800 116 71 3820 3249 .340
THFE 0420 8.5 .031" Cold-rolled Steel 47 13500 197 116 3820 3388 .340

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