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Exterior Stitching Screws for Sheet Steel
Exterior coated stitching screws designed for fixing thin sheet metal to sheet metal, providing reliable corrosion resistance for outdoor applications.
Timco Exterior Stitching Screws – 6.3mm x 22mm – Hex Head – EPDM Washer – Self-Drilling – Box of 100
In stock
£6.24 ex VAT(£7.49 inc VAT)
SKU:
S22W16B
Timco Exterior Stitching Screws – 6.3mm x 25mm – Hex Head – EPDM Washer – Self-Drilling – Bag of 120
In stock
£8.74 ex VAT(£10.49 inc VAT)
SKU:
S25W16BB
Timco Exterior Stitching Screws – 6.3mm x 25mm – Hex Head – EPDM Washer – Self-Drilling – Box of 100
In stock
£7.24 ex VAT(£8.69 inc VAT)
SKU:
S25W16B
What are exterior stitching screws?
Exterior stitching screws are designed for fixing thin sheet metal to sheet metal without the need for pre-drilling. Also known as sheet to sheet screws or lap screws, they are commonly used for joining overlapping metal sheets in roofing and cladding applications.
Why choose exterior stitching screws?
- Self-drilling point removes the need for pre-drilling
- Designed for stitching thin sheet metal up to 1.6mm
- Exterior coating provides corrosion resistance
- Tested to over 500 hours salt-spray performance
- Hex head with EPDM washer for a secure fixing
Where are they used?
Exterior stitching screws are commonly used for:
- Fixing overlapping metal roofing sheets
- Cladding and external panel systems
- Sheet metal joints and lap connections
- Outdoor fabrication and installation work
Why use screws with EPDM washers?
Many stitching screws are supplied with EPDM washers to help create a tight seal at the fixing point. When compressed during installation, the washer helps protect the joint and supports a more weather-resistant finish.
- Helps reduce water ingress at fixing points
- Improves performance in roofing and cladding
- Supports a more secure fixing between sheets
- Maintains flexibility in changing temperatures
Available Sizes
| Size | Typical Use |
|---|---|
| 6.3 x 22mm | Standard stitching of overlapping sheet metal |
| 6.3 x 25mm | Slightly increased grip for thicker or layered sheets |
When should you use exterior stitching screws?
Exterior stitching screws are the right choice when working in outdoor or exposed environments where corrosion resistance is important. They provide a durable fixing for roofing, cladding, and general external sheet metal applications.
