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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Studs and Pins for Sheet Metal > Heavy Duty Studs, Non Flush – Types HFH, HFHB, HFE, HFHS, THFE > Heavy Duty Studs For Thin Sheets – Type THFE > Heavy Duty Studs for Thin Sheets - Type THFE - Unified > Part # THFE-0420-12ZI  

Part # THFE-0420-12ZI, Heavy Duty Studs for Thin Sheets - Type THFE - Unified

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  • 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 Size
.250-20 (1/4-20)

Thread Code
0420

Length Code
12

Min. Sheet Thickness
.031 in

Hole Size in Sheet + .005 - .000
.250 in

L - Length ± .015

 View
.750 in

H ± .01
.462 in

S Max.1
.109 in

T Max.
.069 in

Max. Hole in Attached Parts
.340 in

Min. Dist. Hole C/L to Edge
.446 in

Thread Strength
120 ksi

For Use in Sheet Hardness
HRB 85 / HB 165 or Less

Thread Specification
External, ASME B1.1, 2A

Fastener Material
Hardened Carbon Steel

Standard Finish
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

CAD Supplier
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.



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