Screw Fischer 670131 20 mm 1000 pc(s)

Fischer 670131 screws are steel wood screws designed for reliable fastening in timber and wood-based materials. Each screw is 20 mm long with a 3.5 mm thread diameter and a 16 mm thread length. Supplied in a pack of 1000 pieces, this set is intended for repeatable use in construction, carpentry and general DIY where consistent quality and quantity are required.

Advantages

These steel screws offer consistent mechanical properties and dimensional accuracy for predictable performance in wood applications. The specified thread diameter and thread length provide good pull-out resistance and secure clamping of wooden components. Supplied in a bulk pack of 1000, they reduce the need for frequent reordering and support larger projects or professional use.

Suitable for

• Connecting softwood and hardwood elements in furniture and frame assembly
• Fixing trims, moldings and skirtings
• General carpentry and joinery tasks
• Small construction and renovation works

Key specifications

• Material: steel
• Length: 20 mm
• Thread diameter: 3.5 mm
• Thread length: 16 mm
• Pack quantity: 1000 pieces

How to use

Select an appropriate pilot hole size if required by the wood type and screw diameter, then insert the screw using a compatible driver bit or screwdriver. Drive the screw until the head is flush with or slightly below the wood surface depending on the desired finish. For hardwoods or dense materials, pre-drilling can reduce splitting; for softwoods, direct insertion is generally acceptable. Ensure correct alignment of workpieces before final tightening.

Recommendations

Store the screws in a dry environment to avoid surface corrosion. When using outdoors or in moist conditions, consider suitable coating or alternative fasteners designed for external exposure. Use protective eyewear and follow standard safety practices when drilling or driving screws.