M4 Wing Nut, 316 Stainless Steel - WNUA4M4

The Metric Wing Nut, 316 Stainless Steel is a nut with two flat wings that allow it to be tightened and loosened by hand, with no tool.

Supplied in 316 (A4) stainless steel. The molybdenum in A4 gives better resistance to chlorides than A2 (304), so it is the usual choice near the coast, around pools and in marine and food-processing environments. Metric sizes are written M followed by the nominal thread diameter in millimetres, so M10 is a 10 mm thread.

The range runs to 8 variants, covering sizes M3 to M16. Pack quantities depend on size: packs of 25 to 100.

In wet conditions, keep stainless steel apart from aluminium and galvanised steel with a washer or sleeve, to reduce the risk of galvanic corrosion.

Where this product is used

• Boat, jetty and waterfront structures
• Hand-tightened connections
• Covers, guards and access panels that are removed often
• Marine and washdown fixtures
• Larger sizes for frames, plant and structural fixings
• Small sizes for enclosures, instruments and light fittings

Features

• Supplied in packs of 25 to 100
• Quick to remove and refit
• Two wings allow hand tightening
• A4 (316) stainless steel with molybdenum, for coastal and chloride-exposed settings
• Choice of 8 sizes, M3 to M16
• Metric thread sizes match the nuts, bolts and tapped holes in most Australian-supplied equipment

Key specifications

Selecting the right option

Hand tightening gives only a light clamping force, so a wing nut is not suited to joints that carry high loads or vibrate. Use anti-seize on the thread. For indoor and general outdoor use where chlorides are not a concern, the A2 (304) version is the lower-cost option: Metric Wing Nut - 304 Stainless Steel.

Related products

Matching products: Metric Hex Bolt - 316 Stainless Steel, Wing Screw A4 (316) and Allthread Rod 316 Stainless Steel.