OS GSO ISO 12257:2013
ISO 12257:2008
Omani Standard
Current Edition
·
Approved on
09 September 2013
Aerospace -- Internal six-lobe drives -- Metric series
OS GSO ISO 12257:2013 Files
English
2 Pages
Current Edition
Reference Language
OMR
20.31
OS GSO ISO 12257:2013 Scope
This International Standard specifies the dimensions of metric internal six-lobe drives used in metric screws in nominal thread diameter range 3 mm to 20 mm.
NOTE Pending publication of an International Standard relating to limit gauges, special care is required to ensure that the dimensions and tolerances specified in this International Standard are confirmed by alternative means.
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