grade8.8
standardISO 898-1
tensile800
yield640
Execution standard reference
Alloy Steel Alloy Steel Hexagon Head Bolt — DIN 931 / ISO 4014 / GB/T 5782
Alloy steel is commonly selected for fasteners that require higher strength after controlled heat treatment. Like plain carbon steel it has no inherent corrosion resistance and relies on a protective finish. Alloying and heat treatment can support higher property classes such as 10.9 or 12.9, but the actual class and test evidence are confirmed per order. Highly loaded joints in machinery, automotive and structural connections that specify 10.9 or 12.9. Magnetic. It is not a substitute for stainless where corrosion resistance is the requirement. The table below is controlled selection guidance, not a claim that every listed grade is supplied. Confirm the exact material, grade and mechanical requirements in the quotation.
Hexagon Head BoltCurrent standardControlled material and grade reference
Dimensional reference
Shows dimensions already stored in the standard library. Missing values are not filled automatically.
| gradeReference grade / class | standardReference standard | tensileReference tensile (MPa) | yieldReference yield (MPa) |
|---|---|---|---|
| 8.8 | ISO 898-1 | 800 | 640 |
| 9.8 | ISO 898-1 | 900 | 720 |
| 10.9 | ISO 898-1 | 1000 | 900 |
| 12.9 | ISO 898-1 | 1200 | 1080 |
grade9.8
standardISO 898-1
tensile900
yield720
grade10.9
standardISO 898-1
tensile1000
yield900
grade12.9
standardISO 898-1
tensile1200
yield1080
Available products
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