This standard was last reviewed and confirmed in 2019. Therefore this version remains current.
ISO 12257:2008 specifies the dimensions of metric internal six-lobe drives used in metric screws in nominal thread diameter range 3 mm to 20 mm.
Status: PublishedPublication date: 2008-08
Edition: 1Number of pages: 2
Technical Committee: ISO/TC 20/SC 4 Aerospace fastener systems
- ICS :
- 49.030.20 Bolts, screws, studs
This standard contributes to the following Sustainable Development Goal:
Buy this standard
|std 1 40|
|std 2 40||Paper|
A standard is reviewed every 5 years
Stage: 90.93 (Confirmed)
Got a question?
Check out our FAQs
+41 22 749 08 88
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.