DZUS FASTENERS
https://files.southco.com/static/Literature/81-82-85.en.pdf#Quarter-Turn-Fasteners-82-13-16&20
The simplicity of a quarter turn is all it takes to secure panels quickly and easily with these versatile little fasteners. Numerous head styles, stud lengths, receptacle styles, and accessories, provide flexibility for accommodating many specific mounting requirements.
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