Grade 12.9 Steel Round Head Solid Rivet

Grade 12.9 Steel (class 12.9) is the highest common strength class, for high-load machine assembly. When round head solid rivet are specified in this grade, the dimensions remain per GB/T 867 / DIN 660; the material determines corrosion behavior (requires plating or black-oxide protection) and the service temperature range (up to approx. +300 °C). Both are covered below with the size table.

Why Choose Grade 12.9 Steel for Round Head Solid Rivet — GB/T 867 / DIN 660 (Series 097)

The highest common strength class, for high-load machine assembly. For round head solid rivet — gb/t 867 / din 660 (series 097), this matters when requires plating or black-oxide protection is the primary requirement.

Mechanical & Physical Properties

Galvanic & Galling Considerations

For round head solid rivet — gb/t 867 / din 660 (series 097) in steel, the dominant compatibility issue is hydrogen embrittlement at high property classes (10.9 and above) when electroplated. Plating must be followed by an appropriate baking treatment, or a non-electroplated finish (mechanical zinc, zinc flake) should be substituted.

Comparable Grades

For Round Head Solid Rivet — GB/T 867 / DIN 660 (Series 097), class 8.8 is the comparable strength step. Move up when the joint preload approaches the proof load of the current class; move down when the joint is over-specified. For corrosion-critical service, switch to stainless A2 or A4.

Sizes of Round Head Solid Rivet — GB/T 867 / DIN 660 (Series 097) Available in Grade 12.9 Steel