ISO 4017 HEX BOLT — M8

ISO 4017 HEX BOLT — M8: width across flats 12.73–13 mm, head height 5.15–5.45 mm, pitch 1.25 mm. Material A4-70, surface Stainless Steel, tensile strength 700 MPa. Dimensional tolerances per ISO 4017 — product grade A up to M24, B above.

BOLTS

High-performance industrial fastener under ISO 4017 standard.

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Material Grade Filter

Dimensions

Width Across Flats (s)	12.73–13 mm
Head Height (k)	5.15–5.45 mm
Pitch	1.25 mm
Tensile Strength	700 MPa
Material	A4-70
Surface	Stainless Steel

Dimensional tolerances per ISO 4017 — product grade A up to M24, B above.

Grades

A4-70

Grade A4-70 · Stainless Steel

A4-70

Grade A4-70 · Plain

5.6

Grade 5.6 · Plain

8.8

Grade 8.8 · Plain

5.8

Grade 5.8 · Plain

A2-70

Grade A2-70 · Stainless Steel

A2-70

Grade A2-70 · Plain

10.9

Grade 10.9 · Plain

12.9

Grade 12.9 · Plain

← Back to ISO 4017 HEX BOLT → B3 Grade Matrix → Engineering Center (C)

Need technical support?

Contact engineering team for verified B2 data reference.

Standard References: Official ISO standards · ISO 4017 reference (fasteners.eu)

ISO 4017 Full Thread Hexagon Head Bolt per ISO 4017 specification, available in A4-70 grade with Stainless Steel finish. Engineered for industrial OEM applications requiring 700.0 MPa tensile strength and reliable long-term fastening performance.

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Frequently asked questions

What is the width across flats of ISO 4017 HEX BOLT — M8?

12.73–13 mm (nominal with the tolerance range shown above)

What is the head height of ISO 4017 HEX BOLT — M8?

5.15–5.45 mm (nominal with the tolerance range shown above)

What is the thread pitch of ISO 4017 HEX BOLT — M8?

1.25 mm

What material, finish and strength does this page list?

Material: A4-70, surface: Stainless Steel, tensile strength: 700 MPa.

Which tolerance basis is used on this page?

ISO 4017 — product grade A up to M24, B above.