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Screws · ISO 4762 / DIN 912

A2 Stainless Steel Socket Head Cap Screws

A2 Stainless Steel Socket Head Cap Screws reference image

Material specification page for socket head cap screws in A2 Stainless Steel. Covers the grade designation (A2-70 (304)), corrosion and magnetic behavior, comparable grades and their trade-offs, and the sizes available to ISO 4762 / DIN 912.

Why Choose A2 Stainless Steel for Socket Head Cap Screws

The most common stainless grade for indoor and general outdoor fasteners. For socket head cap screws, this matters when good general corrosion resistance is the primary requirement.

Mechanical & Physical Properties

Grade designationA2-70 (304)
Magnetic responseLargely non-magnetic
Service temperatureapprox. -200 °C to +400 °C
Corrosion characteristicGood general corrosion resistance

Corrosion Behavior in Service

A2 (304) gives excellent atmospheric and most-water corrosion resistance and is the most common stainless for Socket Head Cap Screws in indoor and general outdoor service. In chloride-bearing environments (marine air, road salt, swimming pools) consider stepping up to A4 (316).

Comparable Grades

For Socket Head Cap Screws, the alternative stainless grade is A4 (316). A2 (304) suits general indoor and outdoor service; A4 (316) adds molybdenum for marine and chloride environments. Where higher strength matters more than corrosion, switch to plated alloy-steel class 8.8 or 10.9.

Sizes of Socket Head Cap Screws Available in A2 Stainless Steel

SizePitch (mm)Head diameter dk (mm)Head height k (mm)Hex key s (mm)Socket depth t min (mm)Reference standard
M10.251.91.00.70.5ISO 4762 / DIN 912
M1.20.252.31.20.90.6ISO 4762 / DIN 912
M1.40.32.61.41.00.7ISO 4762 / DIN 912
M1.60.353.01.61.50.7ISO 4762 / DIN 912
M20.43.82.01.51.0ISO 4762 / DIN 912
M2.50.454.52.52.01.1ISO 4762 / DIN 912
M30.55.53.02.51.3ISO 4762 / DIN 912
M40.77.04.03.02.0ISO 4762 / DIN 912
M50.88.55.04.02.5ISO 4762 / DIN 912
M61.010.06.05.03.0ISO 4762 / DIN 912
M81.2513.08.06.04.0ISO 4762 / DIN 912
M101.516.010.08.05.0ISO 4762 / DIN 912
M121.7518.012.010.06.0ISO 4762 / DIN 912
M142.021.014.012.07.0ISO 4762 / DIN 912
M162.024.016.014.08.0ISO 4762 / DIN 912
M182.527.018.014.09.0ISO 4762 / DIN 912
M202.530.020.017.010.0ISO 4762 / DIN 912
M222.533.022.017.011.0ISO 4762 / DIN 912
M243.036.024.019.012.0ISO 4762 / DIN 912
M273.040.027.019.013.5ISO 4762 / DIN 912
M303.545.030.022.015.5ISO 4762 / DIN 912
M333.550.033.024.017.5ISO 4762 / DIN 912
M364.054.036.027.019.0ISO 4762 / DIN 912
M424.563.042.032.021.0ISO 4762 / DIN 912
M485.072.048.036.025.0ISO 4762 / DIN 912

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 (ISO 4762 / DIN 912)

SizePitch (mm)Head diameter dk (mm)Head height k (mm)Hex key s (mm)Socket depth t min (mm)Reference standard
M10.251.91.00.70.5ISO 4762 / DIN 912
M1.20.252.31.20.90.6ISO 4762 / DIN 912
M1.40.32.61.41.00.7ISO 4762 / DIN 912
M1.60.353.01.61.50.7ISO 4762 / DIN 912
M20.43.82.01.51.0ISO 4762 / DIN 912
M2.50.454.52.52.01.1ISO 4762 / DIN 912
M30.55.53.02.51.3ISO 4762 / DIN 912
M40.77.04.03.02.0ISO 4762 / DIN 912
M50.88.55.04.02.5ISO 4762 / DIN 912
M61.010.06.05.03.0ISO 4762 / DIN 912
M81.2513.08.06.04.0ISO 4762 / DIN 912
M101.516.010.08.05.0ISO 4762 / DIN 912
M121.7518.012.010.06.0ISO 4762 / DIN 912
M142.021.014.012.07.0ISO 4762 / DIN 912
M162.024.016.014.08.0ISO 4762 / DIN 912
M182.527.018.014.09.0ISO 4762 / DIN 912
M202.530.020.017.010.0ISO 4762 / DIN 912
M222.533.022.017.011.0ISO 4762 / DIN 912
M243.036.024.019.012.0ISO 4762 / DIN 912
M273.040.027.019.013.5ISO 4762 / DIN 912
M303.545.030.022.015.5ISO 4762 / DIN 912
M333.550.033.024.017.5ISO 4762 / DIN 912
M364.054.036.027.019.0ISO 4762 / DIN 912
M424.563.042.032.021.0ISO 4762 / DIN 912
M485.072.048.036.025.0ISO 4762 / DIN 912

Frequently Asked Questions

Is A2 Stainless Steel food-grade?

A2 (304) is widely accepted for food contact in non-chloride environments; A4 (316) is preferred where chlorides are present.

Can A2 Stainless Steel Socket Head Cap Screws be used with aluminum?

Yes, but stainless drives mild galvanic corrosion of aluminum in wet service — isolate with a coating, sleeve or paint, or accept the trade-off if the joint is dry and indoor.

What's the service temperature limit for A2 Stainless Steel?

The practical service range is approx. -200 °C to +400 °C.

Can A2 Stainless Steel replace plated alloy steel structurally?

Only at the standard strength classes — A2-70 / A4-80 are roughly equivalent to class 7 steel; A4-100 reaches class 8.8. For class 10.9 or 12.9 strength, plated alloy steel is required.

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.