Stitching Screws for Sheet Steel

Stitching screws, also known as sheet to sheet screws or lap screws, are designed for fixing thin sheet metal together quickly and securely without pre-drilling.

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Stitching Screw - For Sheet Steel - Bi-Metal

Stitching Screw - For Sheet Steel - Bi-Metal (1)

Stitching Screw - For Sheet Steel - Exterior

Stitching Screw - For Sheet Steel - Exterior (3)

Stitching Screw - For Sheet Steel - Zinc

Stitching Screw - For Sheet Steel - Zinc (1)

What are stitching screws?

Stitching screws are specialist fixings used to join thin sheet metal to sheet metal. They are commonly used where two sheets overlap, such as in roofing and cladding systems. The self-drilling point allows the screw to cut through metal without the need for a pilot hole, saving time on installation.

Why use stitching screws?

  • Self-drilling point removes the need for pre-drilling
  • Designed for stitching thin sheet metal together
  • Compact fixing ideal for overlapping sheets
  • Hex head provides strong drive and easy installation
  • Available with EPDM washers for improved sealing

Where are sheet to sheet screws used?

Stitching screws are widely used across:

  • Metal roofing systems and lap joints
  • Cladding and external panel systems
  • HVAC ducting and sheet metal fabrication
  • General construction and installation work

Types of stitching screws

Choosing the right type depends on the environment and level of corrosion resistance required:

Type Best For
Zinc Stitching Screws Internal use and dry environments where corrosion is not a concern
Exterior Stitching Screws Outdoor use with improved corrosion resistance for roofing and cladding
Bi-Metal Stitching Screws High corrosion resistance for exposed, coastal, or industrial environments

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 improves long-term performance.

  • Helps reduce water ingress at fixing points
  • Improves performance in roofing and cladding systems
  • Supports a more secure fixing between sheets
  • Maintains flexibility in changing temperatures

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Frequently Asked Questions

What are stitching screws used for?
Stitching screws are used to fix thin sheet metal to sheet metal, particularly where sheets overlap in roofing and cladding systems.

Do stitching screws need a pilot hole?
No – stitching screws have a self-drilling point that allows them to cut through thin metal without pre-drilling.

What is the difference between stitching screws and self drilling screws?
Stitching screws are typically shorter and designed for joining thin sheets together, while standard self drilling screws are used for fixing into thicker materials or structural sections.

What are lap screws?
Lap screws are another name for stitching screws, commonly used in roofing to fix overlapping metal sheets together.