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Whether you’re building a 3D printer enclosure, assembling flat-pack furniture, or setting up a workshop jig, these stainless steel A2 butterfly wing screws let you tighten and loosen connections by hand—no tools required. The oversized thumb wings give you a confident grip, saving time during adjustments and repeated access. Perfect for makers, woodworkers, mechanics, and DIY home improvement enthusiasts who need reliable, corrosion-resistant fasteners that stay easy to operate even with wet or oily fingers. Offering the most popular metric sizes (M5, M6, M8) and a wide length range from 8mm up to 50mm, this kit covers everyday clamping, fixturing, and panel fastening tasks without hunting for a screwdriver.
| Specification | Detail |
|---|---|
| Thread Sizes | M5 × 0.8, M6 × 1.0, M8 × 1.25 (metric coarse) |
| Available Lengths | 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm |
| Material | Stainless Steel A2 (304) |
| Grade | A2 |
| Drive Style | Thumb / Wing Grip |
| Head Type | Butterfly Wing (no slot or cross recess) |
| System of Measurement | Metric |
| Country of Origin | China |
| Condition | New – unopened, retail packaging |
| Packaging | Assorted sizes in a handy storage pack (see variant) |
Yes, with proper expectations. A2 stainless steel (304) offers good corrosion resistance for exterior applications that are not directly exposed to saltwater or harsh chemicals. For coastal environments, consider upgrading to A4 (316) stainless if available. Under normal rain and humidity, occasional cleaning will keep them looking new.
Absolutely. The wide butterfly design gives you a firm grasp for hand tightening. For connections that experience vibration, we recommend using a split lock washer or a nylon-insert nut as a secondary lock—though many users find the manual torque sufficient for jigs, guards, and covers.
The listing offers a selection of M5, M6, and M8 diameters with lengths ranging from 8mm to 50mm. Please check the variation dropdown for the exact piece count and size mix—typical kits include an assortment of the most popular lengths. Full specifications are shown in the size chart above.
Yes! The threads follow ISO metric coarse standards, so they will mate perfectly with any M5, M6, or M8 nut, threaded insert, or tapped hole that matches the size. Always verify the thread pitch (e.g., M6 × 1.0) if you’re replacing an existing bolt.
Simply wipe with a dry or slightly damp cloth. For stubborn grime, use mild soap and water, then dry thoroughly. Avoid abrasive pads that could scratch the surface. Since they are solid stainless steel (not plated), there’s no risk of rust creeping under a worn coating.
🛠️ Tip: Keep a few spares in your toolbox, camera rig bag, or 3D printer kit—once you start using thumb bolts for quick-release panels, you’ll never go back to fiddling with Allen wrenches!
