DIN 933 — Hexagon head screws – Product grades A and B — ISO 4017
What is the din standard for DIN 933 — Hexagon head screws – Product grades A and B — ISO 4017?
For DIN 933, fastener description is Hexagon head screws – Product grades A and B; iso equivalent is 4017; en iso number is 4017; date of current standard/modified is 2001-03; title of replacement standard is Hexagon head screws – Product grades A and B, verified against its source on 2026-10-12.
Hexagon head screws – Product grades A and B | 933 | 4017 | 24017 | 4017 | 4017 | 2001-03 | Hexagon head screws – Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |
— fullerfasteners.com, retrieved 2026-09-22
- DIN standard
- 933 verified
- Fastener description
- Hexagon head screws – Product grades A and B verified
- ISO equivalent
- 4017 verified
- EN ISO number
- 4017 verified
- Date of current standard/modified
- 2001-03 verified
- Title of replacement standard
- Hexagon head screws – Product grades A and B verified
- Modification notes
- Nominal size extended; width across flats according to DIN ISO 272 included sources disagree
- Interchangeability
- Fully interchangeable per monsterbolts.com
- Variant note
- Full thread hex bolts. per monsterbolts.com
- British Standard equivalent
- BS3692 per trfastenings.com
What monsterbolts.com says
Hex Head Bolts (FT), Metric Coarse | DIN 933 | ISO 4017 | Fully interchangeable | Full thread hex bolts.
— monsterbolts.com, retrieved 2026-09-21
What trfastenings.com says
DIN 933 | ISO 4017 | BS3692 | M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8 |
— trfastenings.com, retrieved 2026-09-22
What dinmedia.de says
DIN 933:1983-12 . This document has been replaced by: DIN EN 24017:1992-02 , DIN EN ISO 4017:2001-03 .
— dinmedia.de, retrieved 2026-08-12
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Modification notes
fullerfasteners.com says modification notes is Nominal size extended; width across flats according to DIN ISO 272 included, as of 2026-09-22.
Hexagon head screws – Product grades A and B | 933 | 4017 | 24017 | 4017 | 4017 | 2001-03 | Hexagon head screws – Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |
https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
wuerth.de says modification notes is bei den Abmessungen M10, M12, M14 und M22 die Schlüsselweiten geändert haben und somit andere Verschraubungswerkzeuge eingesetzt werden müssen, as of 2026-08-12.
Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zurückgezogen wurden. Die entsprechenden ISO – Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zurückgezogenen DIN – Normen. Dadurch sind grundsätzliche keine Einschränkungen bei der Verwendungen dieser ISO – Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schlüsselweiten geändert haben und somit andere Verschraubungswerkzeuge eingesetzt werden müssen.
Sources
- fullerfasteners.comhttps://fullerfasteners.com/tech/din-iso-en-crossover-chart/
- monsterbolts.comhttps://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
- trfastenings.comhttps://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards
- dinmedia.dehttps://www.dinmedia.de/en/standard/din-933/3071389
- wuerth.dehttps://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php