Reasonable and economical price
No anti-rust properties (it rusts in moisture)
Applications:
Building and metal structures in dry space
Car industry and heavy machinery
Projects that require high mechanical resistance
Note: To prevent rusting in a humid environment, the screws can be painted or coated with anti-rust.
📸 Picture number 1: Iron bolt and nut
🌊 Steel bolt and nut (anti-rust)
Features:
Made of stainless steel (with chrome and nickel)
resistant to corrosion and moisture
Glossy and beautiful appearance
Higher price than iron models
Applications:
food and pharmaceutical industries
Marine Structures and Wet Places
Facade and decorative equipment
Note: Steel is the best choice for places exposed to water or high humidity.
📸 Image number 2: Steel bolt and nut
⚡ Brass bolt and nut
Features:
Made of copper and zinc alloy
electrically conductive and resistant to common rust
Softer than steel and iron
Golden color and attractive appearance
Applications:
electrical and electronic industries
decorative equipment
Precise and delicate devices
Note: special appearance and good conductivity make brass more used in decorative and electrical items.
📸 Picture number 3: brass bolt and nut
⚪ Galvanized bolts and nuts
Features:
The material of the base is steel, but coated with zinc metal
Excellent resistance to rust
Lower price than steel and high durability
Matte silver look
Applications:
Outdoor industries such as masts, fences and metal roofs
Structures related to water and sewage
semi-humid environments
Note: Galvanized is the best economic option for the balance between durability and price.
📸 picture number 4: galvanized bolts and nuts
🔍 Final comparison table
Material: Rust resistance, mechanical resistance, appearance, application, iron, low, high, dark gray, building, dry environment, steel, very high, high, glossy, silver, food industry, marine brass, medium, medium, gold, electrical, decorative, galvanized, high, high, matte silver, semi-wet environments, outdoor
✅ Summary
Choosing the type of bolts and nuts does not depend only on appearance or price; Rather, working conditions, ambient humidity and pressure should be taken into account.
If your project is in a humid environment, steel is more suitable; They are the best options for dry, iron or galvanized metal structures; And for decorative or electrical works, brass is considered an ideal choice.