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Rubber Seals
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| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 99 | £0.13 | £0.16 |
| 100 - 999 | £0.12 | £0.14 |
| 1000 - 5999 | £0.10 | £0.12 |
| 6000 + | £0.08 | £0.10 |
Product Specification
| Thread Size | M4 |
| Thread Pitch | 0.70mm |
| Width | 20.0mm |
| Height | 10.5mm |
| Material | A2 Stainless Steel |
| Standard | DIN 315 |
Frequently Bought Together
- Thread Size M4
- Material A2 Stainless Steel
- Height 3.20mm
- Thread Pitch 0.70mm
- Across Flats 7.0mm
- Standard DIN 934
- Thread Size M4
- Material A2 Stainless Steel
- Head Diameter 7.0mm
- Length 16mm
- Drive H3
- Pitch 0.70mm
- Head Height 4.0mm
- Head Style Cap Head
- Threaded Length Fully Threaded
- Material A2 Stainless Steel
- Thickness 0.8mm
- Internal Diameter 4.3mm
- Outside Diameter 9.0mm
- Standard DIN 125A
- Size M4
Total Price: £0.00
M4 Wing Nut DIN 315 -A2 Stainless Steel (304) -20mm Wide
The M4 AA2 Stainless Steel Wing Nut is a compact butterfly nut at 20mm wide -also known as a butterfly nut or thumb nut, manufactured to DIN 315 and designed for light-duty adjustable assemblies, small instrument covers and precision equipment where tool-free hand tightening speeds up regular adjustment or removal. The two large wings allow the nut to be tightened and loosened by hand without any tools -essential wherever the fastening needs to be adjusted, inspected or removed regularly without stopping to find a spanner.
Manufactured from A2 stainless steel (grade 304 / 18-8), this wing nut offers reliable corrosion resistance in general indoor and outdoor environments including light moisture, humidity and mild chemical exposure -ideal for the precision and light engineering applications where this size is most commonly used. The two large wings allow secure tightening and loosening by hand without tools. A countersunk bearing face gives a stable seating on the mating surface. DIN 315 compliant for dimensional consistency with compatible metric bolts, threaded rods and machine screws of the same pitch (0.7mm).
Common Applications
- Small access panel and instrument cover hand-tightened retention
- Light clamp and bracket adjustment in workshop and laboratory settings
- Telescopic device and adjustable fixture finger-tightened fastening
- Photography and optical mounting adjustment requiring frequent repositioning
M4 A2 Wing Nut Dimensions
- Thread Size: M4
- Thread Pitch: 0.7mm
- Width: 20mm
- Height: 10.5mm
- Material: A2 Stainless Steel (304 / 18-8)
- Standard: DIN 315
- Drive: Hand Tightening (Tool-Free)
- Also Known As: Butterfly Nut, Thumb Nut
View our full stainless steel wing nut range or browse our complete wing nut collection. We also sell nylon wing nuts for applications where a non-metallic fastener is required.
Need help or buying in bulk?
For technical advice on wing nut selection or volume pricing, call 01233 713581.
| Code | Thread Size | Material | Height | Width | Thread Pitch | Standard | Stock | |
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| WN315-M10-A2 | M10 | A2 Stainless Steel | 17.3mm | 36.2mm | 1.50mm | DIN 315 |
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| WN315-M12-A2 | M12 | A2 Stainless Steel | 22.3mm | 49.4mm | 1.75mm | DIN 315 |
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| WN315-M14-A2 | M14 | A2 Stainless Steel | 30.8mm | 52.7mm | 2.00mm | DIN 315 |
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| WN315-M16-A2 | M16 | A2 Stainless Steel | 30.8mm | 58.3mm | 2.00mm | DIN 315 |
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| WN315-M18-A2 | M18 | A2 Stainless Steel | 31.2mm | 66.5mm | 2.50mm | DIN 315 |
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| WN315-M20-A2 | M20 | A2 Stainless Steel | 31.2mm | 66.5mm | 2.50mm | DIN 315 |
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| WN315-M3-A2 | M3 | A2 Stainless Steel | 10.0mm | 20.0mm | 0.50mm | DIN 315 |
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| WN315-M4-A2 | M4 | A2 Stainless Steel | 10.5mm | 20.0mm | 0.70mm | DIN 315 |
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| WN315-M5-A2 | M5 | A2 Stainless Steel | 11.0mm | 22.5mm | 0.80mm | DIN 315 |
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| WN315-M6-A2 | M6 | A2 Stainless Steel | 13.6mm | 27.8mm | 1.00mm | DIN 315 |
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| WN315-M8-A2 | M8 | A2 Stainless Steel | 14.8mm | 30.3mm | 1.25mm | DIN 315 |
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