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Description / Abstract:
Introduction
Note: Nothing in this standard supercedes
applicable laws and regulations.
Note: In the event of conflict between the
English and domestic language, the English language shall take
precedence.
Purpose. This standard specifies recommended
methods for gaging of external hexalobular driving feature. This
standard is based on DIN 34801, Annex A. This standard is to be
utilized to assure dimensional compliance of hexalobular bolt head
styles.
Applicability. As an alternative head style
where standard hex style head may not be the appropriate drive
feature or if for esthetic purposes to drive alternative
styling.
Remarks. This standard is available as an
alternate head style over the GM fastening strategy to utilize
standard hex type head sizes, i.e. 10 mm, 13 mm, 15 mm, 18 mm, 21
mm, 24 mm, etc. Across Flats. The hex strategy is utilized for tool
interchangeability between bolt and nut product of same
diameter.