NAS1800-2012
RECESS@ SIX LOBE DRIVE@ INTERNAL@ DIMENSIONS FOR RECESS AND GAGES (Rev 4)

Standard No.

NAS1800-2012

Release Date

2012

Published By

AIA/NAS - Aerospace Industries Association of America Inc.

Scope

This design standard defines the dimensional requirements for internal six lobe drive-internal recess head fasteners in 100??hear and tension flush heads and pan heads.