Remember, Choose SA if your Helmet does not have an integrated HANS nut. Choose SAH if your Helmet does have an integrated HANS nut.
Be aware that some helmets will (only) have a predrilled hole (but no HANS...
Used with quick release assembly - SA2010
Used with Simpson post anchors (HY.PA)
Used with M6 anchor system (M61.HAK)
Used with Simpson post clips
FIA standard 8858-2010 only approves helmets with the nut washer built in the helmet.
If you purchase post anchors with nut washers from Simpson, you accept that these anchors do not comply with the FIA regulation.
Used with D-Rings (standard)