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Say goodbye to fumbling for hex keys or screwdrivers in the middle of a project. Our stainless steel wing bolts / butterfly wing screws are designed for rapid hand tightening wherever quick adjustments matter — from workshop jigs and furniture assembly to outdoor equipment repair. The generous wing ears give you leverage without tools, making them ideal for woodworkers, 3D printer builders, metal fabricators, and serious DIYers who value speed and reliable holding power. Available in a mixed kit covering M4 through M10, they handle delicate fixtures and heavy‑duty brackets with equal ease.
| Material | 316 Stainless Steel / 201 Stainless Steel (select at purchase) |
|---|---|
| Screw Sizes Included | M4, M5, M6, M8, M10 (metric coarse thread) |
| Thread Type | Standard Metric Coarse (ISO) |
| Head Style | Round head with butterfly wing ears |
| Drive Style | Hand‑tighten (wing); also accommodates a hex‑key for extra torque if required |
| Length Range | Multiple lengths per size — approximately 10 mm to 50 mm (M4‑M10 range) |
| System of Measurement | Metric |
| Grade | Grade 2 (comparable structural strength) |
| Package | Assorted kit (counts vary by size; see listing photo for breakdown) |
| Country of Origin | China |
The “M” followed by a number is the metric thread diameter in millimeters. M4 is 4 mm thick, M10 is 10 mm thick. If you’re replacing an existing bolt, measure the inside diameter of the nut or hole. As a rule of thumb, M4 suits light brackets and electronics, M6–M8 handle mid‑range wood/metal joints, and M10 works for heavier structural connections.
Yes. The listing offers both material grades. 316 stainless contains molybdenum for superior resistance to saltwater and chemicals — ideal for marine, pool, or outdoor use. 201 stainless is a lower‑nickel, more economical option with excellent general corrosion resistance for indoor workshops, furniture, and dry environments. Choose the one that fits your project conditions.
Absolutely. While designed for finger tightening, the head includes a hex socket so you can apply additional torque with a standard hex key (Allen wrench) when your application calls for a more secure, vibration‑resistant joint.
If you choose the 316 stainless steel option, the bolts offer excellent resistance to rust and pitting, even in coastal or rainy conditions. The 201 stainless version resists rust in typical indoor and covered outdoor settings, but for continuous direct exposure to rain, 316 is recommended. Both far outperform ordinary zinc‑plated steel.
This is a size‑assorted kit spanning M4, M5, M6, M8, and M10. The exact piece count and length mix are shown in the product images. Typically, smaller diameters (M4, M5) include shorter lengths, while M8 and M10 come in longer options up to around 50 mm. You get a practical workshop variety that covers the most common lengths right out of the box.
