Pilot-Free Fixing for Thin Sheet Steel, Ducting & Framing
These 16mm x 4.2mm wafer head self drilling screws are engineered for direct fastening into sheet metal, steel sections, and lightweight substrates — no pilot hole required. The self-drilling point (tek tip) makes them perfect for fast-paced trades where speed and consistency matter, such as HVAC installs, electrical framing, and signage.
The broad wafer head design gives a neat, flush finish while spreading the load across thin materials to prevent pull-through. Manufactured from carbon steel with a bright zinc plated finish, they offer a clean look and resistance to corrosion in indoor or sheltered settings.
Popular applications include: ductwork brackets, cable tray systems, suspended ceilings, aluminium trims, and shallow metal channels.
Technical Specifications of 16mm x 4.2mm Wafer Head Self Drilling Screws
| Length (mm) | 16 |
|---|---|
| Gauge | 8 |
| Diameter (mm) | 4.2 |
| Head Type | Wafer Head |
| Drive Type | Phillips |
| Drive Size | No. 2 |
| Thread Type | Self Drilling |
| Thread Coverage | Fully Threaded |
| Point Type | Self Drilling (Tek Tip) |
| Finish | Bright Zinc Plated (BZP) |
| Material | Carbon Steel |
| Corrosion Resistance | Rated for internal use |
| CE Standards | BS EN 14566:2008, BS EN 10666:2008 |
| Box Quantity | 1000 pcs |
| Brand | TIMCO |
Need a RAL colour-matched version? Try our powder-coated painted alternative for seamless, low-visibility finishes.
Delivery times are Monday - Friday (excluding Bank Holidays) from 7:30am - 6:00pm. Most deliveries leave on Express Delivery for 1 - 3 working day delivery service. A 'working day' is Monday to Friday, excluding bank holidays. Weekends and bank holidays do not count as working days.
FREE 1-3 working day delivery service for all orders over £375 (excluding VAT). See our Delivery Page for further details.
Long Length Items like tile trims will incur a £9.99 delivery surcharge in line with our couriers. This surcharge is automatically added onto your order at the checkout stage.
Special 1 - 2 Day Shipping occurs when an item is sent to you direct from the manufacturer, usually on a next day service. This usually incurs a flat rate shipping charge of £15.99.
Click and Collect
We offer a free Click and Collect service on all stocked items at our main warehouse. Click and Collect orders are available for collection from 08:30am to 16:00pm Monday to Friday. Please allow 2 hours from your order to when you come and collect. Please wait for and bring your order confirmation paperwork with you. Collection address is Tile Fix Direct, Unit 1 Hollybush Lane, Ash Vale, GU11 2PX.
Delivery Damages
It's important that you indicate the damages on the delivery note when you sign for the goods. Notify Tile Fix Direct by emailing us or calling our advice line on 0333 320 04 24 if there are any damages or irregularities to your order within 24 hours of delivery.
Delivery times are Monday - Friday (excluding Bank Holidays) from 7:30am - 6:00pm. Most deliveries leave on Express Delivery for 1 - 3 working day delivery service. A 'working day' is Monday to Friday, excluding bank holidays. Weekends and bank holidays do not count as working days.
FREE 1-3 working day delivery service for all orders over £375 (excluding VAT). See our Delivery Page for further details.
Long Length Items like tile trims will incur a £9.99 delivery surcharge in line with our couriers. This surcharge is automatically added onto your order at the checkout stage.
Special 1 - 2 Day Shipping occurs when an item is sent to you direct from the manufacturer, usually on a next day service. This usually incurs a flat rate shipping charge of £15.99.
Click and Collect
We offer a free Click and Collect service on all stocked items at our main warehouse. Click and Collect orders are available for collection from 08:30am to 16:00pm Monday to Friday. Please allow 2 hours from your order to when you come and collect. Please wait for and bring your order confirmation paperwork with you. Collection address is Tile Fix Direct, Unit 1 Hollybush Lane, Ash Vale, GU11 2PX.
Delivery Damages
It's important that you indicate the damages on the delivery note when you sign for the goods. Notify Tile Fix Direct by emailing us or calling our advice line on 0333 320 04 24 if there are any damages or irregularities to your order within 24 hours of delivery.
