Zygology
Zygology Ltd
Unit 7, Thame 40 Jane Morbey Road
Thame Oxon OX9 3RR
Phone: 0808 123 1221
Fax: +44 1844 266021
Email: sales@zygology.com
Web Address: www.zygology.com
Print Back
  • 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.
Heavy Duty Studs for Thin Sheets - Type THFE
Heavy Duty Studs for Thin Sheets - Type THFE 2
Unit of Measure
Items Heavy Duty Studs for Thin Sheets - Type THFE
THFE-0420-8ZI
Heavy Duty Studs for Thin Sheets - Type THFE - Unified 		Heavy Duty Studs for Thin Sheets - Type THFE
THFE-0518-8ZI
Heavy Duty Studs for Thin Sheets - Type THFE - Unified 		Heavy Duty Studs for Thin Sheets - Type THFE
THFE-0420-12ZI
Heavy Duty Studs for Thin Sheets - Type THFE - Unified 		Heavy Duty Studs for Thin Sheets - Type THFE
THFE-0518-12ZI
Heavy Duty Studs for Thin Sheets - Type THFE - Unified 		Heavy Duty Studs for Thin Sheets - Type THFE
THFE-0420-16ZI
Heavy Duty Studs for Thin Sheets - Type THFE - Unified
Thread Size N/A .250-20 (1/4-20) N/A .313-18 (5/16-18) N/A .250-20 (1/4-20) N/A .313-18 (5/16-18) N/A .250-20 (1/4-20)
Thread Code N/A 0420 N/A 0518 N/A 0420 N/A 0518 N/A 0420
Length Code N/A 8 N/A 8 N/A 12 N/A 12 N/A 16
Min. Sheet Thickness1 N/A .031 in
Hole Size in Sheet + .005 - .000 N/A .250 in N/A .312 in N/A .250 in N/A .312 in N/A .250 in
L - Length ± .015 N/A .500 in Heavy-Duty-Studs-for-Thin-Sheets---Type-THFE-2.jpg N/A .500 in Heavy-Duty-Studs-for-Thin-Sheets---Type-THFE-2.jpg N/A .750 in Heavy-Duty-Studs-for-Thin-Sheets---Type-THFE-2.jpg N/A .750 in Heavy-Duty-Studs-for-Thin-Sheets---Type-THFE-2.jpg N/A 1.00 in Heavy-Duty-Studs-for-Thin-Sheets---Type-THFE-2.jpg
H ± .01 N/A .462 in N/A .586 in N/A .462 in N/A .586 in N/A .462 in
S Max.2 N/A .109 in N/A .117 in N/A .109 in N/A .117 in N/A .109 in
T Max. N/A .069 in N/A .099 in N/A .069 in N/A .099 in N/A .069 in
Max. Hole in Attached Parts N/A .340 in N/A .402 in N/A .340 in N/A .402 in N/A .340 in
Min. Dist. Hole C/L to Edge N/A .446 in N/A .596 in N/A .446 in N/A .596 in N/A .446 in
Thread Strength N/A 120 ksi
For Use in Sheet Hardness N/A HRB 85 / HB 165 or Less
Thread Specification N/A External, ASME B1.1, 2A
Fastener Material N/A Hardened Carbon Steel
Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
CAD Supplier N/A PennEngineering® (PEM®)
  • 1 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.
  • 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.