Metric bolts are threaded fasteners commonly used in construction, automotive, machinery, furniture, and various other industries. These bolts are measured using the metric system and are identified by a number that starts with “M” (e.g., M6, M8, M10). The number specified in the bolt code indicates the diameter in millimeters, and when used with nuts, they provide secure and durable connections. Metric bolts are essential for ensuring that parts stay firmly together.
Metric bolts are typically made from materials such as steel, stainless steel, brass, aluminum, and plastic. Their surfaces are often coated with zinc, galvanizing, stainless steel, or other special coatings to enhance corrosion resistance. The choice of material and coating depends on the application, strength requirements, and environmental conditions.
Common types of metric bolts include hex head, socket head, flanged, carriage, and eye bolts. Each type is specifically designed for certain applications. For example, flanged bolts offer better resistance to load due to their wide head, while eye bolts are ideal for load-bearing tasks. Metric bolts are manufactured according to international standards, ensuring reliable and consistent fastening solutions for various projects.
Feature | Option 1 | Option 2 | Option 3 | Option 4 |
---|---|---|---|---|
Bolt Type | Hex Head | Flanged | Socket Head | Eye Bolt |
Metric Size (Diameter) | M6 | M8 | M10 | M12 |
Length (L) | 20 mm | 30 mm | 50 mm | 75 mm |
Head Height (k) | 3.8 mm | 5.3 mm | 6.4 mm | 7.5 mm |
Wrench Width (s) | 10 mm | 13 mm | 16 mm | 18 mm |
Thread Pitch | 1.0 mm | 1.25 mm | 1.5 mm | 1.75 mm |
Material | Steel | Stainless Steel | Brass | Plastic |
Coating | Zinc Plating | Hot Dip Galvanized | Epoxy Coating | PVC Coating |
Corrosion Resistance | Medium | High | Very High | Low |
Tensile Strength | 400 N/mm² | 600 N/mm² | 800 N/mm² | 300 N/mm² |
Application Area | Construction | Automotive | Machinery Manufacturing | Furniture Production |
Durability Class | 8.8 | 10.9 | 12.9 | 5.6 |
Mounting Type | Nut Connection | Flanged Connection | Hex Keyed | Ring Connection |
Standards | DIN 931 | ISO 4014 | ASTM A325 | TS EN ISO 898 |
Weight (per unit) | 0.02 kg | 0.03 kg | 0.04 kg | 0.05 kg |
Heat Resistance | 200°C | 300°C | 400°C | 100°C |
Operating Environment | Normal | Humid | Highly Humid | Dry |
Additional Features | High Strength | Vibration Dampening | Corrosion Resistant | Load Bearing |
Color Options | Gray | Black | Chrome | White |
Conductivity | Medium | High | Low | Insulating |
Thread Angle | 60° | 55° | 60° | 55° |
Lifespan | Medium | Long | Very Long | Short |