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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.
Applications & Industries
Display Industry
Used for fixed display components.
Automobile Industry
Ideal for insulation and components requiring frequent dismantling and maintenance.
Aerospace Industry
Used in electronic equipment for insulation and anti-interference treatment.
Office Equipment Industry
For the production of rust-free, beautiful, and practical office equipment.
Furniture Assembly
For fixing sofas, beds, wardrobes, and cabinets to ensure stability and ease of adjustment.
Lamp Installation
Enables fast and convenient fixing of lamps, minimizing the need for tools.
Home Decoration
Perfect for fixing wall decorations, hanging ornaments, murals, and clock installation.
Construction Field
Suitable for the fixing and installation of buildings, 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
01
Thread is deep, tooth pitch is even; when using, the force is even, ensuring good fastening force.
02
Products are smooth with no burrs, featuring delicate workmanship built to last.
03
Raw materials are strictly controlled, featuring exquisite grinding and high hardness.
Frequently Asked Questions (FAQ)
Q: What is a Butterfly Screw?
A Butterfly Screw (or Butterfly Bolt) is a specially designed fastener with a larger lateral force surface, allowing users to tighten and adjust it easily by hand without requiring tools.
Q: What are the primary applications for butterfly screws?
They are widely used across the display, automotive, aerospace, office equipment, furniture assembly, lighting, home decoration, and construction industries where frequent assembly and disassembly are required.
Q: How do environmental factors affect nylon butterfly screws?
Nylon butterfly screws offer excellent oil and chemical resistance. However, because nylon is hygroscopic, moisture absorption may reduce its tensile strength while increasing ductility, impact strength, and energy absorption.
Q: Can these screws be used in outdoor or high-temperature environments?
Yes. During injection molding, carbon black can be added to the nylon material to improve outdoor weather resistance, allowing the screws to work effectively under high-temperature environments.
Q: What quality features do these butterfly screws offer?
Our butterfly screws feature deep threads with an even tooth pitch for balanced fastening force, a smooth burr-free finish, and are made from strictly controlled, high-hardness raw materials with exquisite grinding.