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ISO 4014  similar to DIN 931

Hexagon head bolts
Material: Steel 8.8 | Surface: hot-dip galvanised

Diameter (d)

Length (l)

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similar to DIN 931 | ISO standard has been withdrawn
ISO 4014 | steel | 8.8 | hot-dip galvanised (thermally galvanised) | Cr(VI) - free | metric thread

Note: Similar to DIN 931 | DIN-standard has been withdrawn | hot-dip galvanised screws have very good resistance against corrosion. The zinc layer is much thicker than with galvanic coatings

This standard specifies the characteristics of hexagon head bolts of product grade A and B:

Product grade A = For threads M1,6 to M24 and nominal lengths ≤ 10d or 150 mm, whichever is the shorter
Product grade B = For threads over M24 or nominal lengths > 10d or 150 mm, whichever is the shorter.

Information about the product class can be found in the technical details of the selected article.

technical details

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Cr(VI) Note Cr(VI)-free
Flange/washer without flange
Force application Hexagon head
Head shape Hexagon head
Installation method Screw into place with tool
Material Steel
Material version 8.8
Risk hydrogen embrittlement
RoHS conformal
Surface hot-dip galvanised
Thread type Metric thread


You can download CAD-files from our catalog on partcommunity: To Böllhoff partcommunity
Title Language Version File Download
The Manual of Fastening Technology: 5th edition English 8100/08.02 1.93 MB / PDF
Data sheet: Technical information and dimensions of the product English 02/2022 121.32 KB / PDF
Fastening and assembly technology: Products and services English 1180/21-V1-EN (WBH) 8.79 MB / PDF
Böllhoff bulletin: Changeover to Cr6+-free protective zinc layers for fasteners English 1622/15.02 894.98 KB / PDF

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