Aerospace — Internal six-lobe drives — Metric series
STANDARD published on 21.7.2008
Designation standards: ISO 12257:2008
Publication date standards: 21.7.2008
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: International technical standard
Category: Technical standards ISO
Description / Abstract: 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.