Catalog
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CAD (0)
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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.
Unit of Measure
Thread Size |
N/A .313-18 (5/16-18) |
Thread Code |
N/A 0518 |
Length Code |
N/A 8 |
Min. Sheet Thickness |
N/A .031 in |
Hole Size in Sheet + .005 - .000 |
N/A .312 in |
L - Length ± .015 |
N/A
.500 in
![]() Loading zoom |
H ± .01 |
N/A .586 in |
S Max.1 | N/A .117 in |
T Max. |
N/A .099 in |
Max. Hole in Attached Parts |
N/A .402 in |
Min. Dist. Hole C/L to Edge |
N/A .596 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 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.