A black rivet.
Mazda lists TK21-50-355 as a bumper cover rivet.
Sizes: 4mm hole, 12mm head.
OEM numbers: Mazda TK21-50-355.
Fits Mazda.
Single clips, bags of 25 or 100. Kept in the white rivets drawer.
Models
Mazda 3 2014 - Current, 6 2018 - Current, Atenza 2018 - Current, CX-30 2020 - Current, CX-3 2018 - Current, CX-5 2017 - Current, CX-50 2023 - Current, CX-9 2013 - Current, MX-30 2022 - Current
Model years from the car maker's parts catalogue (US-market years; check your vehicle)
Mazda 3 2014-2025
Mazda 6 2018-2021
Mazda CX-3 2018-2021
Mazda CX-30 2020-2025
Mazda CX-5 2017-2025
Mazda CX-50 2023-2024
Mazda CX-9 2013-2015
Mazda MX-30 EV 2022-2023
Details
Mazda Black Grille & Bumper Cover Rivet
Mazda part number; TK21-50-355, TK2150355
Hole size: 5/32" (4mm)
Flange Diameter: 59/128" (11.7mm)
Rivet Length: 111/128" (22.1mm)
Overall Length: 2 3/32" (53.1mm)
Black Aluminum Rivet & Steel Mandrel
Other Names: Upper Molding Rivet, Bumper Cover Rivet, Rivet