Metric Form A Nylon Plastic Flat Plastic Washers M3 - M24
M24 / 25mm 44mm 4mm. NYLON WASHERS FORM A FLAT PLASTIC WASHER M3,M4,M5,M6,M8,M10,M12,M16,M20. M3 / 3.2mm 7mm 0.5mm. Stated sizes are the bolt size which the washers fit, hence the hole sizes are a little larger to allow clearance.