https://www.hertings.com/square-plate-washers-zinc-m12-x-38-x-38mm
Hertings. SQUARE PLATE WASHERS - ZINC - M12 x 38 x 38mm
square plate washerszincx
https://www.dandlfixings.co.uk/p/timco-square-plate-washers-silver-m12-x-50-x-50-x-3/
TIMCO Square Plate Washers BZP - M12 x 50 x 50 x 3 | D&L Fixings
square plate washerstimcobzpx
https://www.bisonuk.com/m10x50x3-bzp-square-plate-washers/
BISON | M10 x 50 x 3 BZP Square Plate Washers
Bright zinc plated flat square washers, 3mm thick. For use typically when fixing channel and bracketry. Supplied in boxes/100.
square plate washersbisonxbzp
https://www.empirebolt.com/square-washers/square-plate-washer
Square Plate Washers | Square Washers
square plate washers