Ruwag Cap Screw 6x40mm (5) is a set of five cap screws measuring 6mm in diameter and 40mm in length. These screws serve as essential fasteners in automotive applications and other mechanical assemblies where secure, threaded fastening is required.
This listing is for new replacement cap screws, suitable for use in various repair or maintenance tasks that specify this size and type of fastener. The 6x40mm sizing is a key dimension to compare against your old screws or the technical specifications in your vehicle or equipment manual. Using the correct length and diameter ensures proper assembly strength and reliability.
Cap screws like these normally provide a firm, flush fitting head for a clean and stable fixture. They are commonly used in places requiring precise fastening with hex or Allen key drive heads, often found in automotive components and machinery.
- Check the existing screw’s length and diameter before purchasing
- Use this set to replace worn, rusted, or damaged screws of matching size
- Confirm compatibility with your vehicle or equipment for secure fastening
If unsure about fitment or quantity, consider consulting the sales desk or submitting a request for parts to ensure you select the correct fasteners for your needs.
Not sure the code, size or specification matches? Use Request a Part or Platinum Sales Desk with a clear photo of the old part before checkout.

