M4 Form A Flat Washers – DIN 125A, Bright Zinc Plated

Flat washers for spreading load and protecting surfaces under metric bolts and screws from M4 to M40.

Key Benefits & Features

• DIN 125 Form A standard ensures consistent dimensions and a precision fit.
• Bright zinc plating (BZP) offers basic corrosion resistance and a neat finish.
• Flat design spreads load, preventing bolt head or nut crush on softer materials.
• Smooth edges reduce damage to mating surfaces.
• Available in metric sizes M4 to M40.
• Suitable for wood, metal, plastic and composites in DIY and trade applications.
• Washers only – bolts, nuts and other hardware not included.

Use Cases

• Spreading load under furniture and cabinet fixings
• Protecting surfaces in automotive and machinery assemblies
• Construction, electrical and maintenance work
• DIY projects and home repairs
• Workshops and model engineering

What’s in the Box

• Flat washers, Form A DIN 125, quantity and size as selected

Compatibility / Fittings

• Designed for use with standard metric bolts, screws and nuts matching the selected M size.
• Suitable for Form A DIN 125 applications and other general-purpose fixings.
• Not intended for high-strength or heavy-duty clamping (use heavier-duty washers where required).

Installation & Tips

• Choose a washer with the same nominal size as the bolt or screw (e.g. M8 bolt with M8 washer).
• Ensure surfaces are clean and flat before assembly.
• Place the washer under the bolt head or nut to spread load and protect the surface.
• For outdoor or corrosive environments, consider stainless steel washers for improved durability.
• Replace washers if they show signs of wear, corrosion or deformation.