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Nuts · GB/T 62 / DIN 315

Grade 12.9 Steel Wing Nut — GB/T 62 / DIN 315 (Series 077)

Grade 12.9 Steel Wing Nut — GB/T 62 / DIN 315 (Series 077) pairs the standard GB/T 62 / DIN 315 with a Grade 12.9 Steel base material. The sections below cover why engineers select this grade for wing nut — gb/t 62 / din 315 (series 077), its corrosion and temperature behavior, and the sizes available.

Why Choose Grade 12.9 Steel for Wing Nut — GB/T 62 / DIN 315 (Series 077)

The highest common strength class, for high-load machine assembly. For wing nut — gb/t 62 / din 315 (series 077), this matters when requires plating or black-oxide protection is the primary requirement.

Mechanical & Physical Properties

Grade designationclass 12.9
Magnetic responseMagnetic
Service temperatureup to approx. +300 °C
Corrosion characteristicRequires plating or black-oxide protection

Galvanic & Galling Considerations

For wing nut — gb/t 62 / din 315 (series 077) 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 Wing Nut — GB/T 62 / DIN 315 (Series 077), 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 Wing Nut — GB/T 62 / DIN 315 (Series 077) Available in Grade 12.9 Steel

SizePitch (mm)Wing width A (mm)Wing height h (mm)Nut height m (mm)Reference standard
M30.51285GB/T 62 / DIN 315
M40.716107GB/T 62 / DIN 315
M50.820128GB/T 62 / DIN 315
M61.0241410GB/T 62 / DIN 315
M81.25321813GB/T 62 / DIN 315
M101.5402216GB/T 62 / DIN 315
M121.75482619GB/T 62 / DIN 315
M162.0603224GB/T 62 / DIN 315

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

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Adjust the parameters in the drawing above and click "Request this configuration" to send the exact specification straight to this form.

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Specification
Business Information

Dimensions & Specifications (GB/T 62 / DIN 315)

SizePitch (mm)Wing width A (mm)Wing height h (mm)Nut height m (mm)Reference standard
M30.51285GB/T 62 / DIN 315
M40.716107GB/T 62 / DIN 315
M50.820128GB/T 62 / DIN 315
M61.0241410GB/T 62 / DIN 315
M81.25321813GB/T 62 / DIN 315
M101.5402216GB/T 62 / DIN 315
M121.75482619GB/T 62 / DIN 315
M162.0603224GB/T 62 / DIN 315

Frequently Asked Questions

Which finish is best for outdoor Wing Nut — GB/T 62 / DIN 315 (Series 077)?

For outdoor service in steel, hot-dip galvanizing gives the longest life; zinc-flake (Geomet/Delta-Tone family) gives a thinner film with excellent salt-spray performance; standard zinc plating is the lowest-cost option for general indoor / shielded outdoor use.

What's the service temperature limit for Grade 12.9 Steel?

The practical service range is up to approx. +300 °C.

Can Grade 12.9 Steel replace stainless steel structurally?

No — stainless A2/A4 cannot match class 10.9 / 12.9 strength. Stainless is selected for corrosion, not raw strength.

Are Grade 12.9 Steel Wing Nut — GB/T 62 / DIN 315 (Series 077) magnetic?

Grade 12.9 Steel Wing Nut — GB/T 62 / DIN 315 (Series 077) are magnetic.

How do I request a quotation?

Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.