Tools · ISO 2936

A2 Stainless Steel Hex Keys (Allen Keys)

When Hex Keys (Allen Keys) are required in A2 Stainless Steel, the alternative grades and the trade-offs between them matter as much as the dimensions. This page covers both, plus mechanical and corrosion data.

Why Choose A2 Stainless Steel for Hex Keys (Allen Keys)

The most common stainless grade for indoor and general outdoor fasteners. For hex keys (allen keys), this matters when good general corrosion resistance is the primary requirement.

Mechanical & Physical Properties

Grade designation	A2-70 (304)
Magnetic response	Largely non-magnetic
Service temperature	approx. -200 °C to +400 °C
Corrosion characteristic	Good general corrosion resistance

Galvanic & Galling Considerations

Two important notes for stainless hex keys (allen keys): (1) stainless can gall on stainless threads under load — use a thread lubricant or anti-galling compound, especially for M6 and below; (2) when joined to aluminum or galvanized steel, stainless can drive galvanic corrosion of the less-noble metal in wet service — isolate with a coating or sleeve where appropriate.

Comparable Grades

For Hex Keys (Allen Keys), 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 Hex Keys (Allen Keys) Available in A2 Stainless Steel

Wrench size s (mm)	Common bolt sizes	Short leg (mm)	Long leg (mm)	Reference standard
0.7	M1	28	51	ISO 2936 / DIN 911
0.9	M1.1	28	56	ISO 2936 / DIN 911
1.0	M1.2	32	56	ISO 2936 / DIN 911
1.3	M1.6	36	63	ISO 2936 / DIN 911
1.5	M2	40	71	ISO 2936 / DIN 911
2.0	M2.5	50	90	ISO 2936 / DIN 911
2.5	M3	56	100	ISO 2936 / DIN 911
3.0	M4	63	112	ISO 2936 / DIN 911
4.0	M5	71	125	ISO 2936 / DIN 911
5.0	M6	80	140	ISO 2936 / DIN 911
6.0	M8	90	160	ISO 2936 / DIN 911
7.0	---	100	180	ISO 2936 / DIN 911
8.0	M10	112	200	ISO 2936 / DIN 911
9.0	---	112	200	ISO 2936 / DIN 911
10.0	M12	125	224	ISO 2936 / DIN 911
12.0	M14	140	250	ISO 2936 / DIN 911
14.0	M16	160	280	ISO 2936 / DIN 911
17.0	M20	180	315	ISO 2936 / DIN 911
19.0	M22	200	355	ISO 2936 / DIN 911
22.0	M24	224	400	ISO 2936 / DIN 911
24.0	M27	250	450	ISO 2936 / DIN 911
27.0	M30	280	500	ISO 2936 / DIN 911
32.0	M36	315	560	ISO 2936 / DIN 911
36.0	M42	355	630	ISO 2936 / DIN 911
41.0	M48	400	710	ISO 2936 / DIN 911
46.0	---	450	800	ISO 2936 / DIN 911
50.0	---	500	900	ISO 2936 / DIN 911
55.0	---	500	900	ISO 2936 / DIN 911
60.0	---	560	1000	ISO 2936 / DIN 911

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.

Request a Quote

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

Category Type Standard Thread size Material Finish

Dimensions & Specifications (ISO 2936)

Wrench size s (mm)	Common bolt sizes	Short leg (mm)	Long leg (mm)	Reference standard
0.7	M1	28	51	ISO 2936 / DIN 911
0.9	M1.1	28	56	ISO 2936 / DIN 911
1.0	M1.2	32	56	ISO 2936 / DIN 911
1.3	M1.6	36	63	ISO 2936 / DIN 911
1.5	M2	40	71	ISO 2936 / DIN 911
2.0	M2.5	50	90	ISO 2936 / DIN 911
2.5	M3	56	100	ISO 2936 / DIN 911
3.0	M4	63	112	ISO 2936 / DIN 911
4.0	M5	71	125	ISO 2936 / DIN 911
5.0	M6	80	140	ISO 2936 / DIN 911
6.0	M8	90	160	ISO 2936 / DIN 911
7.0	---	100	180	ISO 2936 / DIN 911
8.0	M10	112	200	ISO 2936 / DIN 911
9.0	---	112	200	ISO 2936 / DIN 911
10.0	M12	125	224	ISO 2936 / DIN 911
12.0	M14	140	250	ISO 2936 / DIN 911
14.0	M16	160	280	ISO 2936 / DIN 911
17.0	M20	180	315	ISO 2936 / DIN 911
19.0	M22	200	355	ISO 2936 / DIN 911
22.0	M24	224	400	ISO 2936 / DIN 911
24.0	M27	250	450	ISO 2936 / DIN 911
27.0	M30	280	500	ISO 2936 / DIN 911
32.0	M36	315	560	ISO 2936 / DIN 911
36.0	M42	355	630	ISO 2936 / DIN 911
41.0	M48	400	710	ISO 2936 / DIN 911
46.0	---	450	800	ISO 2936 / DIN 911
50.0	---	500	900	ISO 2936 / DIN 911
55.0	---	500	900	ISO 2936 / DIN 911
60.0	---	560	1000	ISO 2936 / DIN 911

Frequently Asked Questions

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.

Are A2 Stainless Steel Hex Keys (Allen Keys) magnetic?

A2 Stainless Steel Hex Keys (Allen Keys) are largely non-magnetic.

What corrosion resistance do A2 Stainless Steel Hex Keys (Allen Keys) offer?

A2 Stainless Steel Hex Keys (Allen Keys) provide good general corrosion resistance with a service range of approx. -200 °C to +400 °C.

Should I choose A2 Stainless Steel or A4 (316) for Hex Keys (Allen Keys)?

For Hex Keys (Allen Keys), A2 Stainless Steel suits general indoor and outdoor use; A4 (316) is preferred for marine, coastal and chemical environments. Choose by corrosion exposure first.

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.