Large Flange Pop Rivets 3 16" x 1 2" Aluminum Body Steel Mandrel Large Dome Head 6 8 Gap .376" .500" Quantity 50 by Fastenere 3 16" x 1 2" (6 8) (50 Pack) healthDE_Nov2023 Always place the protective cap Powered intake valve remains Always place the protective cap on the tips of the tweezers between uses Pharmaceutical: Made in Japan An aluminum blind fastener which has a self contained mechanical feature (a mandrel) which permits the formation of an upset on the blind end of the rivet and expansion of the rivet shank during the setting to join the component parts of an assembly Large Flange rivets offer a wider bearing surface and are preferred where brittle or soft materials are being assembled to rigid surfaces