Stainless Steel Wing Nut - Grade 202, 304, 316 , A2, A2-70
A wing nut, also referred to as a butterfly nut or thumb nut, provides convenient hand tightening or loosening capabilities thanks to its two protruding “wings” or tabs. These nuts are often utilized in situations where frequent adjustments or disassembly are necessary, such as furniture assembly and machine maintenance.
Wing Nuts Technical Specification
| Feature | Description |
| Design | Two flat wings for hand tightening |
| Material Grades | SS 304, SS 316 (marine-grade), SS 201 |
| Standards | DIN 315, ANSI/ASME, ISO |
| Sizes (Metric) | M3 to M16 or custom |
| Sizes (Inch) | #6-32 to 5/8"-11 |
| Finish | Bright finish, passivated |
| Corrosion Resistance | Excellent in wet, acidic, and marine environments |
| Reusable | Yes |
- SS 304 is the most commonly used grade for general stainless fasteners.
- SS 316/316L is ideal for marine, saline, or acidic environments due to added molybdenum.
- SS 201 is a cost-effective option with limited corrosion resistance.
| Material | Grade | Composition Highlights | Properties | Applications |
| Stainless Steel | SS 304 | 18% Cr, 8% Ni | Excellent corrosion resistance, good strength, food-safe | General-purpose, indoor/outdoor, food equipment |
| Stainless Steel | SS 316 | 16–18% Cr, 10–14% Ni, 2–3% Mo | Superior corrosion resistance (chloride/marine environments) | Marine, chemical, coastal & medical applications |
| Stainless Steel | SS 316L | Low-carbon version of SS 316 | Same as 316 but better weldability and resistance to sensitization | Welded assemblies, marine, pharma, medical |
| Stainless Steel | SS 201 | 16–18% Cr, 3.5–5.5% Ni, high manganese | Economical, less corrosion resistant than 304/316 | Light-duty, non-marine, decorative uses |
Stainless steel wing nuts are hand-tightened nuts with two large “wings” for easy manual fastening. Made from corrosion-resistant stainless steel, they are ideal for applications requiring frequent assembly/disassembly in harsh or outdoor environments.
Material
Stainless Steel
Composition Highlights
18% Cr, 8% Ni
Sizes (Metric)
M3 to M16
Sizes (Inch)
#6-32 to 5/8"-11
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