551
For 551, fastener description is Slotted set screws with flat point; iso equivalent is 4766; en iso number is 24766; interchangeability is No modifications of dimensions; modification notes is No modifications of dimensions, verified against its source on 2026-08-12.
- DIN standard
- 551 verified
- Fastener description
- Slotted set screws with flat point verified
- ISO equivalent
- 4766 verified
- EN ISO number
- 24766 verified
- Interchangeability
- No modifications of dimensions verified
- Modification notes
- No modifications of dimensions verified
What the source says
No modifications of dimensions | Slotted set screws with flat point | 551 | | 24766 | | 4766 | 1992-10 | Slotted set screws with flat point |
— fullerfasteners.com, 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.
Fastener description
fullerfasteners.com says fastener description is Slotted set screws with flat point, as of 2026-08-12.
No modifications of dimensions | Slotted set screws with flat point | 551 | | 24766 | | 4766 | 1992-10 | Slotted set screws with flat point |
https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
monsterbolts.com says fastener description is Slot width/tolerance differences., as of 2026-08-12.
DIN 551 | ISO 4766 | Check spec
https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
trfastenings.com says fastener description is Slotted Set Screws with flat point, as of 2026-08-12.
DIN 551 | ISO 4766 | | Slotted Set Screws with flat point |
https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards
Interchangeability
fullerfasteners.com says interchangeability is No modifications of dimensions, as of 2026-08-12.
No modifications of dimensions | Slotted set screws with flat point | 551 | | 24766 | | 4766 | 1992-10 | Slotted set screws with flat point |
https://fullerfasteners.com/tech/din-iso-en-crossover-chart/
monsterbolts.com says interchangeability is Check spec, as of 2026-08-12.
DIN 551 | ISO 4766 | Check spec
https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
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