Hex Bolts
Applications: Construction/Machinery/Automotive/Furniture
🔩 Hex Bolts｜High-Strength Mechanical Fasteners
Hex bolts are among the most commonly used mechanical fasteners, with wide applications across various industries. They are a standard item in many procurement lists. For convenience and compatibility, hex bolts are typically manufactured in accordance with international standards. However, for users with specific needs, semi-custom production is also available.
These bolts are suitable for a wide range of applications, including machinery, railway systems, and the automotive industry. Depending on the usage requirements, hex bolts can be produced with full or partial threads, and in various mechanical property classes to enhance performance and reliability. Coarse threads are the most commonly used, but fine and extra-fine threads can also be supplied based on user demand.
📐 Common International Standards
ISO 4014 / ISO 4017 (International standard)
DIN 931 / DIN 933 (Metric coarse thread – German standard)
ASME B18.2.1 (Inch thread – UNC / UNF)
DIN 558 / DIN 601 (Low carbon steel)
DIN 961 / DIN 960 (Metric fine thread – German standard)
ISO 8676 / ISO 8765 (Metric fine thread – ISO standard)
🛠 Specifications
| Items | Details |
| Size Range | M6 – M27 |
| Thread Type | Metric (Coarse Thread/Fine Thread) / Inch (UNC / UNF) |
| Thread Options | Partial thread / Full thread / Custom Thread Length |
| Materials | Carbon steel, Alloy steel, Stainless steel, Boron steel |
| Strength Grades | 4.6 / 4.8 / 8.8 / 10.9 / 12.9 / 13.9 / A307 / GR.2 /GR.5/ GR.8 |
⚙ Common Surface Finishes
Electroplated zinc
Zinc-nickel alloy (Zn-Ni)
As-treated (bare surface after heat treatment)
GEOMET® coating
Black oxide
Hot-dip galvanized (HDG)
Phosphate coating
🏗 Main Applications
Structural bolts in building and construction
Industrial machinery and equipment assembly
Maintenance and repair of mechanical systems
Heavy-duty vehicles and automotive chassis
Steel structures and infrastructure