R-TECH Hex Socket Cap Screws - M5 X 20 - Pack Of 100 - Silver

The R-TECH 337253 Hex Socket Cap Screw is a high-quality fastener designed for precision and durab...

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Product Information

Full details

The R-TECH Hex Socket Cap Screw (M5 x 20) is designed for users needing reliable and durable fastening solutions in mechanical, automotive, and electronic assemblies. Its key benefit is the combination of high-quality steel construction with a bright zinc-plated finish, offering excellent corrosion resistance and a secure, easy-to-install hex socket design. A potential consideration is that the M5 x 20 size may not be suitable for all applications, requiring users to verify thread and length specifications for their specific needs.

All features

ColourSilver
Model Part Number337253
BrandR-TECH

Extended Product Information

FAQs

What is the material of these screws?

The R-TECH Hex Socket Cap Screws are made from steel with a bright zinc-plated (BZP) finish.

What size hex key is needed for the M5 x 20 screw?

A standard 4mm metric hex key (Allen wrench) is typically required for M5 socket cap screws.

Are these screws suitable for outdoor use?

The bright zinc-plated finish offers good corrosion resistance, making them suitable for many outdoor applications. However, for prolonged exposure to harsh elements, stainless steel alternatives may be more durable.

Can I use these screws in wood?

Yes, you can use these screws in wood, provided you pre-drill a pilot hole of the appropriate size to prevent splitting and ensure smooth insertion.

What does 'BZP' mean?

BZP stands for Bright Zinc Plated. It is a common electroplated coating that provides a decorative and protective layer against corrosion.

How are these screws sold?

This specific product listing is for R-TECH Hex Socket Cap Screws - M5 X 20 - Pack Of 100, in Silver.

What is the main advantage of the hex socket design?

The hex socket design allows for a high level of torque to be applied for a secure fit, and it enables the screw head to sit flush with the surface, providing a cleaner appearance and preventing snagging.

Troubleshooting

Screw won't thread smoothly

Check for cross-threading. Back the screw out completely and try again, ensuring it's aligned straight with the hole. Verify the hole is clean and the correct thread size.

Hex key slips or strips the socket

Ensure you are using the correct size metric hex key (4mm for M5). Use a high-quality hex key to ensure a proper fit. Do not apply excessive force that could deform the socket.

Screw head snaps off during tightening

This indicates overtightening or a defect in the screw. Back off the torque. If the head has already snapped, specialized extraction tools may be needed.

Corrosion is visible on the screw

While BZP offers corrosion resistance, prolonged exposure to harsh conditions can cause rust. Clean the affected area gently. For critical applications, consider stainless steel alternatives or apply a sealant.

Pros and Cons

Pros

  • Durable steel construction for long-lasting use.
  • Corrosion-resistant BZP finish enhances longevity.
  • Secure and easy installation with standard hex tools.
  • Provides a clean, professional finish in assemblies.
  • Available in various sizes for diverse project needs.

Cons

  • Specific M5 x 20 size may not fit all projects.
  • Requires appropriate hex tool for installation/removal.
  • BZP finish can be scratched, potentially exposing steel.
  • Not designed for extremely heavy load-bearing applications without proper engineering.

Setup, Compatibility & Care

Setup:

  1. Select the correct size: Ensure the M5 thread diameter and 20mm length are appropriate for your application's pre-drilled holes or mating components.
  2. Use the correct tool: A standard metric hex key (Allen wrench) of the appropriate size (typically 4mm for M5 screws) is required.
  3. Insert screw: Gently thread the screw into the designated hole. Avoid cross-threading.
  4. Tighten securely: Use the hex key to tighten the screw until snug. Do not overtighten, as this can strip the threads or damage the material.

Compatibility:

  • Thread: Compatible with M5 tapped holes or nuts.
  • Tools: Requires metric hex keys.
  • Materials: Suitable for use with metal, plastic, and wood, provided the correct pre-drilled hole size is used.

Care:

  • Store screws in a dry environment to maintain the integrity of the zinc plating.
  • If cleaning is required, use a soft cloth. Avoid abrasive materials that could damage the finish.
  • For long-term outdoor or high-moisture applications, consider additional protective coatings if the BZP finish is insufficient.

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