Flat Form A Metric Washers – Zinc Plated Steel – M3 to M30

High-quality flat washers in Form A style, made from durable zinc-plated steel for corrosion resistance. Commonly used to distribute load, prevent surface damage, and provide a smooth bearing surface in a wide range of mechanical, engineering, and DIY applications.

Product Features:

• Bright zinc-plated steel for added durability

• Standard flat Form A washers – ideal for general use

• Suitable for use with bolts, screws, and fixings

• Metric sizes available: M3 to M30

• Please select size and pack quantity from the dropdown menu

Specifications (Nominal):

• M3: 0.5mm thick, 7mm OD, 3.2mm ID

• M3.5: 0.5mm thick, 8mm OD, 3.7mm ID

• M4: 0.8mm thick, 9mm OD, 4.3mm ID

• M5: 1.0mm thick, 10mm OD, 5.3mm ID

• M6: 1.5mm thick, 12mm OD, 6.4mm ID

• M8: 1.6mm thick, 16mm OD, 8.4mm ID

• M10: 2.0mm thick, 20mm OD, 10.5mm ID

• M12: 2.5mm thick, 24mm OD, 13mm ID

• M14: 2.5mm thick, 28mm OD, 15mm ID

• M16: 3.0mm thick, 30mm OD, 17mm ID

• M18: 3.0mm thick, 34mm OD, 19mm ID

• M20: 3.0mm thick, 37mm OD, 21mm ID

• M22: 3.0mm thick, 39mm OD, 23mm ID

• M27: 4.0mm thick, 50mm OD, 28mm ID

• M30: 4.0mm thick, 56mm OD, 31mm ID

Please note: All measurements are approximate; washers are not precision-engineered components.