Zinc Plated Steel. Flat form A washers. These are the standard, most commonly used washers. Bright zinc plated.
NYLON WASHERS FORM A FLAT PLASTIC WASHER M2.5 M3 M4 M5 M6 M8 M10 M12 M16 M20
BRASS WASHERS FLAT THICK FORM A FOR METRIC BOLTS M2.5 M3 M4 M5 M6 M8 M10 M12 M16
STAINLESS STEEL WASHERS FORM A FLAT THICK TYPE FOR METRIC SCREWS SIZE M1.6 - M42
SOLID BRASS WASHERS FORM A THICK TO FIT BOLTS & SCREWS M2.5 3 4 5 6 8 10 12 16
M3 Solid Brass SETS 4 Bolts+ 8 Washers Form A + 4 Dome Acorn Nuts Pack of 4 Sets
THIN FLAT WASHERS FORM B ZINC PLATED STEEL M5 M6 M8 M10 M12 M14 M16 M20 M24 M27