Hex bolts are widely used threaded fasteners with a hexagonal head, designed for secure and reliable connections in various applications.
- Materials: Common materials include SS316 stainless steel, medium carbon steel, and alloy steel. SS316 stainless steel offers excellent corrosion resistance, while medium carbon steel and alloy steel can achieve high strength through heat treatment.
- Strength Grades: For stainless steel hex bolts, grades include A4-50, A4-70, A4-80, A4-100, etc. Carbon steel hex bolts have grades like 4.8, 8.8, 10.9, 12.9, etc. There are also grades under ASTM standards such as A193, A325, A490, etc.
- Surface Treatments: Options include polishing, passivation, anti-loosening oil coating, blue wax coating, zinc flake coating, hot-dip galvanizing, and blackening. These treatments enhance corrosion resistance, aesthetics, or prevent loosening.
- Industry Standards: Common standards are DIN933, DIN931, ISO4017, ISO4014, ASTM A193, ASTM A325, etc.
- Application Fields: Widely used in construction, automotive, shipbuilding, aerospace, food and beverage, medical equipment, chemical, and water treatment industries. Suitable for steel structure connections, mechanical equipment installation, and other scenarios.
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