Overview: Butterfly Screw (also called Wing Screw) is a hand-operated fastener featuring a larger lateral force surface, enabling more efficient tightening without tools. It is widely used across multiple industries for convenience and reliability.
📏 Dimensional Specifications
| Nominal diameter d |
10# |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
5/8 |
| d |
0.19 | 0.25 | 0.3125 | 0.375 | 0.4375 | 0.5 | 0.625 |
| PP |
24 | 20 | 18 | 18 | 14 | 13 | 11 |
| n | Max |
0.97 | 1.16 | 1.44 | 1.72 | 2 | 2.31 | 2.84 |
| Min |
0.91 | 1.09 | 1.38 | 1.66 | 1.94 | 2.22 | 2.72 |
| H | Max |
0.45 | 0.56 | 0.67 | 0.8 | 0.91 | 1.06 | 1.31 |
| Min |
0.39 | 0.5 | 0.61 | 0.73 | 0.84 | 0.94 | 1.19 |
| h | Max |
0.15 | 0.17 | 0.18 | 0.2 | 0.21 | 0.23 | 0.27 |
| Min |
0.12 | 0.14 | 0.15 | 0.17 | 0.18 | 0.2 | 0.23 |
| dk | Max |
0.39 | 0.47 | 0.55 | 0.63 | 0.71 | 0.79 | 0.96 |
| Min |
0.36 | 0.44 | 0.52 | 0.6 | 0.68 | 0.76 | 0.92 |
| k | Max |
0.28 | 0.34 | 0.41 | 0.47 | 0.53 | 0.62 | 0.75 |
| Min |
0.22 | 0.28 | 0.34 | 0.41 | 0.47 | 0.5 | 0.62 |
| L | Max |
2 | 3 | 3 | 4 | 3 | 3 | 2.5 |
| Min |
0.5 | 0.5 | 0.5 | 0.5 | 1 | 1 | 1 |
🛠️ Application Areas
1
Display Industry: Used for fixing display components securely and efficiently.
2
Automobile Industry: Ideal for insulation and frequently dismantled components.
3
Aerospace: Applied in electronic equipment for insulation and anti-interference.
4
Office Equipment: Used for rust-free and aesthetically appealing hardware.
5
Furniture Assembly: Suitable for fixing beds, wardrobes, and cabinets.
6
Lamp Installation: Enables fast and tool-free fixture mounting.
7
Home Decoration: Used for hanging ornaments, murals, and clock installation.
8
Construction: Suitable for fixing building elements and wall hangings.
⚠️
Material Note: The oil and chemical resistance of butterfly screws make them excellent mechanical materials. Note their hygroscopicity — moisture may reduce tensile strength while improving ductility and impact absorption. In injection molding, carbon black can be added to enhance outdoor weather resistance for high-temperature environments.
⭐ Product Key Features
-
✔
Thread is deep and tooth pitch is even — providing uniform fastening force for reliable performance.
-
✔
Products are smooth with no burrs — refined craftsmanship ensures a clean, professional finish.
-
✔
Raw materials are strictly controlled with exquisite grinding, resulting in high hardness and durability.
QWhat is a butterfly screw and how does it differ from a regular screw?
A butterfly screw (wing screw) features two large wing-shaped projections on its head, allowing it to be tightened and loosened by hand without tools, unlike regular screws that require a screwdriver.
QWhat materials are butterfly screws typically made from?
They are commonly made from nylon, stainless steel, or galvanized steel. Nylon offers chemical resistance and insulation, while galvanized steel provides superior strength and corrosion resistance.
QWhat sizes are available for butterfly screws?
They are available in nominal diameters including #10, 1/4", 5/16", 3/8", 7/16", 1/2", and 5/8", with various lengths ranging from 0.5" to 4".
QAre butterfly screws suitable for outdoor use?
Yes. Galvanized versions are excellent for outdoors. For nylon versions, UV-stabilizers like carbon black can be added to improve weather resistance in high-temperature environments.
QCan butterfly screws be used in furniture assembly?
Absolutely. They are ideal for furniture that needs frequent disassembly or adjustment, such as bed frames, wardrobes, and cabinets, due to their tool-free design.
QWhat should I consider when using nylon screws in humid environments?
Nylon is hygroscopic and may absorb moisture, which can slightly reduce tensile strength but increase ductility. For structural reliability in very high humidity, stainless or galvanized steel is recommended.
Dongshuo
