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Hex Head Bolts
Application
Hex head bolts feature a six-sided head geometry, allowing easy installation using standard tools such as:
- Open-end wrenches
- Ring spanners
- Socket wrenches
They are among the most widely used, cost-effective, and commonly manufactured fasteners, typically applied where the bolt head is accessible from the outside.
Materials
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Hex head bolts are available in a wide range of materials:
- Carbon steel
- Hardened steel
- Stainless steel (A2)
- Acid-resistant stainless steel (A4)
- Brass
- Aluminum
- Chemically resistant plastic (PA)
Property Classes (Common Grades)
- 5.6-os minőségű hatlapfejű csavar
- 8.8-as minőségű hatlapfejű csavar
- 10.9-es minőségű hatlapfejű csavar
Types and standards
- DIN 933 – fully threaded hex head bolt
- DIN 931 – partially threaded hex head bolt
- DIN 960 – partially threaded fine pitch hex head bolt
- DIN 961 – fully threaded fine pitch hex head bolt
- DIN 6921 – flange hex head bolt (serrated or non-serrated flange)
DIN 6921 flange bolts are commonly used in mechanical engineering applications, such as automotive and elevator systems. The integrated flange allows for higher tightening torque, while the serrated version further increases joint security.
Variatons
Hex head bolts are available in numerous configurations, including:
- Wood screws
- Sheet metal screws
- Self-drilling screws
- Metric thread bolts
- Imperial (inch) thread bolts
