Description
Overview:
Timco Hexagon Head Self Drilling Screws in size 5.5 x 100 mm are heavy‐duty fasteners for fixing metal roofing, cladding and panels to heavy section steel. They are engineered to drill and tap their own hole, so no pilot drilling is needed. Designed for steel up to 12 mm thick, they help speed up installation while maintaining a strong hold in structural substrates. The hexagon head allows positive drive with a socket or nut setter on a cordless drill driver, making them well suited to site work and maintenance tasks. Supplied in a pack of 100, they provide a practical stock size for medium to large jobs and ongoing repairs. Part of the Timco range, they are a dependable choice for tradespeople and capable DIY users.
Key Features:
- 5.5 mm diameter x 100 mm length for secure fixing into heavy section steel up to 12 mm thick
- Self‐drilling tip drills and taps in one operation to remove the need for a pilot hole
- Hexagon head gives high torque transfer and reduces cam‐out during driving
- Fast, consistent start with good bite to minimise wandering on steel surfaces
- Suits cordless drill drivers with a hex socket or nut setter for efficient installation
- Pack of 100 for convenient site stocking and repeat use
- Reliable hold in structural steel and purlins for roofing and panel work
- Compatible with common construction and maintenance tasks where steel substrates are used
- Part of a wider Timco size range (including 5.5 x 25 mm up to 5.5 x 100 mm) for matching different thicknesses
Typical Applications:
Fixing metal roofing sheets and cladding to steel purlins, frames and channels; attaching flashings, trims and light brackets; securing guards, covers and access panels on machinery; general steelwork assembly in workshops, farm buildings and garages; installing HVAC support components onto heavy section steel.
Also known as:
Hex head self‐drilling screws, tek screws, hex tek roofing screws, self‐piercing metal screws, self‐tapping hex screws for steel, metal cladding fixings, steel frame fasteners.
Product Specifications
| L&S Part No. | 903 2032 |
|---|---|
| Manufacturer | Timco |
| OEM No. | H100W16B |
| Unit of Sale | Pack of 100 |
| Key Features | - 5.5 mm diameter x 100 mm length for steel up to 12 mm - Self-drilling tip eliminates need for pilot hole - Hexagon head allows high torque transfer - Compatible with cordless drill drivers using hex socket - Pack of 100 suitable for medium to large jobs |


