Armstrong Ceilings All-in-one Self-stop Fastener for AcoustAffix Surface Mount Panels in Mill Finish (40-Pack)

ACOUSTAFFIX All-in-one Self-stop Fastener in mill finish eliminates the need for a separate washer, allowing for a fast installation of AcoustAffix surface mount panels (sold separately). A built-in self-stop feature prevents over-driving and damaging the panel. Fastener can be used for both ceiling and wall installations.