Sealey BST3519 Self Tapping Screw 3.5 x 19mm Flanged Head Black Pozi BS 4174 Pack of 100

Sealey BST3519 Self Tapping Screw 3.5 x 19mm Flanged Head Black Pozi BS 4174 Pack of 100 – Self-Drilling Screws
Boasting precise engineering, the Sealey BST3519 Self Tapping Screw has been designed to ensure reliable fastening across a broad variety of materials, making it ideal for construction, automotive, and DIY applications. This high-quality self-drilling screw combines a 3.5mm diameter with a 19mm length, providing effective penetration with a secure hold every time.

• 3.5mm diameter for strong, consistent threading
• 19mm length suitable for medium-depth fixing
• Flanged head for superior load distribution
• Black Pozi finish for corrosion resistance and discreet appearance
• Manufactured to BS 4174 standard for assured quality

Compared to standard self-drilling screws, the Sealey BST3519 offers a robust flanged head that enhances stability and minimises the risk of pull-through, which is particularly beneficial when working with softer materials or thin sheet metals. Whilst many previous model screws lack the precision threading and the premium finish found here, this product meets and exceeds British Standards, ensuring long-term performance and aesthetic appeal. Its contemporary black Pozi finish raises its corrosion resistance above competitors, promising longevity even in demanding environments.

Key Technical Advantages:
The Sealey BST3519 not only delivers flawless self-tapping action but also guarantees efficient installation thanks to its Pozi drive technology. This means reduced cam-out and a smoother, more reliable screwing process, especially for repetitive tasks or automated systems. The use of a flanged head increases the bearing surface, thereby reducing the probability of damage to your workpieces. Compared to standard zinc or plain finishes, the enhanced black coating resists wear, tarnishing, and weathering – essential for both indoor and outdoor projects.

Technology and Performance
Elevate your fastening solutions with this self-drilling screw, engineered for seamless self-tapping and optimal retention within a variety of substrates. The precision manufacturing, adherence to BS 4174, and carefully selected materials ensure exceptional holding power and operational efficiency. When seeking a reliable and high-performing screw for structural, mechanical, or decorative projects, the Sealey BST3519 self-tapping screw stands out as the preferred choice, offering both superior technology and lasting performance that meets the rigorous demands of professionals and DIY enthusiasts alike.