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Timco 8 x 1/2" Self Drilling Metal Construction Screws Light Section BZP

Timco  |  SKU: 00812HWSD  |  Barcode: 5055017521296
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TIMCO 8 x 1/2" Self‑Drilling Metal Construction Screws are engineered for fast, reliable fixing of roofing sheets and light‑section steel up to 3.0mm without pre‑drilling. Manufactured from case‑ and core‑hardened carbon steel and finished in BZP zinc plating, these screws deliver dependable performance in clean, dry, low‑humidity environments. Ideal for roofing, cladding, framing, and general metal‑to‑metal construction.

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Self‑drilling point for drilling through steel up to 3.0mm
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Hex head for high torque and secure driving
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BZP zinc finish for clean, dry interior environments

Fast, Reliable Fixing for Light‑Section Steel

Timco 8 x 1/2" Self‑Drilling Screws are purpose‑built for professionals who need fast, efficient metal‑to‑metal fixing without the hassle of pre‑drilling. Their precision‑engineered self‑drilling point penetrates light‑section steel up to 3.0mm, making them ideal for roofing sheets, cladding panels, metal framing, and general construction tasks. The hex head design ensures excellent torque transfer, reducing cam‑out and providing a secure, controlled drive even when working overhead or in awkward positions. Whether you're installing sheeting on agricultural buildings or assembling lightweight steel structures, these screws deliver consistent, dependable performance. 

Built for Strength, Stability, and Long‑Term Performance

Constructed from case‑ and core‑hardened carbon steel, these screws offer the strength required for demanding structural applications. The BZP zinc finish provides a clean, bright appearance and is rated for corrosion class 1, making it suitable for indoor environments with low humidity. The 60° self‑tapping thread ensures a strong, vibration‑resistant hold, while the 8.5mm fixed washer distributes load evenly to prevent pull‑through on thin sheet materials. With their A1 fire classification, these screws are also suitable for installations where non‑combustible components are required. This combination of strength, safety, and reliability makes them a trusted choice for tradespeople across construction, fabrication, and maintenance sectors. 

Precision‑Engineered for Professional Efficiency

Every detail of the Timco 8 x 1/2" screw is designed to improve workflow and installation speed. The self‑drilling tip eliminates the need for pilot holes, reducing labour time and tool wear. The 1/4" hex drive provides a secure bit connection, ensuring smooth, controlled driving with minimal slippage. Their compact 13mm length makes them ideal for thin‑gauge steel where longer screws would risk breakthrough or instability. With excellent material compatibility and a proven track record in metal construction, these screws are a staple for roofers, cladders, HVAC installers, and metal fabricators who need a fast, clean, and reliable fixing solution. 

Key Features

  • Hex head self‑drilling screws for light‑section steel
  • No pre‑drilling required (Max drilling thickness: 3.0mm)
  • Case & core hardened carbon steel for strength and durability
  • Zinc‑plated (BZP) finish for corrosion rating 1 (clean, dry, low‑humidity environments)
  • Fire Classification: A1 (non‑combustible)
  • Thread Type: 60° self‑tapping thread for secure bite
  • Point Type: Self‑drilling
  • Fixed washer diameter: 8.5mm (FW Ø)
  • Effective thread length: 4mm
  • Socket size: 1/4" (6.35mm) hex drive
  • Suitable substrates: Steel
  • CE Standard: BS EN 14566:2008

Product Details

  • Key Features

    • Size (imperial): 8 x 1/2"
    • Size (metric): 4.2 x 13mm
    • Material: Case & core hardened carbon steel
    • Finish: Zinc (BZP)
    • Head type: Hex
    • Socket size: 1/4" (6.35mm)
    • Thread type: 60° self‑tapping
    • Point type: Self‑drilling
    • Max drilling thickness: 3.0mm
    • Effective thread length: 4mm
    • Fixed washer diameter: 8.5mm
    • Fire classification: A1
    • CE Standard: BS EN 14566:2008
    • Corrosion rating: 1 – clean, dry, low‑humidity environments

  • Whats in the box?

  • Timco 00812HWSD hex head self drilling screw on a white background

    Timco 8 x 1/2" Self Drilling Metal Construction Screws Light Section BZP

Frequently Asked Questions

Do these screws require pre‑drilling?

No. They feature a self‑drilling point capable of drilling through steel up to 3.0mm.

Are they suitable for outdoor use?

They have a corrosion rating of 1, meaning they are intended for clean, dry, interior environments.

What tools do I need to install them?

A standard 1/4" hex driver or impact driver with a 6.35mm socket is suitable.