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Galvanized Butterfly Bolts & Union Bolts - Grade 4.8 & 8.8 | China Suppliers & Factory
| 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 | |
Butterfly Screw, also called Butterfly Screw, is a kind of screw designed to facilitate hand-screw operation, with a larger lateral force surface, so that tightening operation more efficient. It has a wide range of applications, including but not limited to:
1. Display industry: for fixed display components.
2. Automobile industry: for the need for insulation and frequent dismantling and maintenance of automotive components.
3. Aerospace industry: Used in electronic equipment on the insulation and anti-interference treatment.
4. Office equipment industry: for the production of never rust and beautiful practical office equipment.
5. Furniture assembly: for the fixed sofa, bed, wardrobe and cabinets and other furniture, to ensure stability and firmness, while easy to remove and adjust.
6. Lamp installation: for fast and convenient fixed lamps, reducing the need for tools.
7. Home decoration applications: for wall decoration fixed, home ornaments hanging, murals and clock installation.
8. Construction Field: suitable for the fixing and installation of buildings, such as furniture, wall hangings and decorations.
The oil resistance and chemical resistance of butterfly screws make them suitable for use as mechanical materials, but they need to pay attention to their hygroscopicity, because moisture may reduce the tensile strength of nylon, permeability and improve ductility, impact strength and energy absorption properties. In injection molding, carbon black can be added to improve the outdoor weather resistance of nylon, so that it can still work under high temperature environment.
Product details:
- 1. Thread is deep, tooth pitch is even, when using the force is even fastening force is good.
- 2. Products smooth no burr, delicate work is difficult to use.
- 3. Raw materials strictly control, exquisite grinding, high hardness.
Frequently Asked Questions (FAQ)
What is a Butterfly Screw and what is its main advantage?
A Butterfly Screw (also known as a wing screw) is designed specifically to facilitate hand-screw operations. It features a larger lateral force surface, making manual tightening operations much more efficient and tool-free.
In which industries are butterfly screws commonly applied?
They are widely used in display installations, automotive components requiring frequent maintenance, aerospace electronics, office equipment, furniture assembly, lamp installation, home decorations, and general construction projects.
What physical properties make butterfly screws suitable for mechanical materials?
Butterfly screws offer excellent oil resistance and chemical resistance, making them highly suitable for various mechanical applications.
How does moisture affect the performance of nylon butterfly screws?
Hygroscopicity is important because moisture absorption can reduce the tensile strength and permeability of nylon, while increasing its ductility, impact strength, and energy absorption properties.
How can the outdoor weather resistance of these screws be enhanced?
During the injection molding process, carbon black can be added to improve the outdoor weather resistance of nylon, ensuring it continues to perform reliably in high-temperature environments.
What are the primary quality characteristics of these butterfly screws?
These screws feature deep, evenly pitched threads for balanced fastening, smooth surfaces with no burrs, and are made from strictly controlled, high-hardness raw materials with exquisite grinding.