Heavy-Duty Self-Drilling Fixing For Steel
The 5.5X40MM SS Hex HS Selfdrill Bi-Metal Washered Self-Drilling Screw A2 is a premium fastening solution engineered for fast and secure fixing into steel sections up to 12mm thick. Designed with a bi-metal structure that pairs a hardened carbon steel drill point with an A2 stainless steel body, this screw delivers exceptional performance in both drilling speed and corrosion resistance. It’s an ideal choice for outdoor or exposed applications such as steel cladding, façade installations, and metal roofing, even in aggressive environments.
The hexagonal head ensures strong drive control, while the pre-assembled stainless steel washer with bonded EPDM seal prevents water ingress and delivers a tight, leak-free finish. With no pre-drilling required, installation is streamlined—saving time and labour costs on-site. Its robust self-drilling tip is precision-designed to penetrate up to 12mm thick steel, making it suitable for heavy-duty structural or industrial applications where consistent, reliable performance is essential.
This high-quality bi-metal screw offers peace of mind with long-term resistance to rust and wear, helping reduce maintenance and improve the longevity of steel assemblies in exposed conditions.
We aim to despatch our customer orders as quickly as possible. For orders placed online and where the items are held in stock the goods will be usually despatched within the displayed expected delivery timescale.
If for any reason delivery is delayed we will notify you.
We deliver to Mainland UK addresses, the following delivery services are available:
Standard next day delivery
| For orders over £199 (excluding signage) | F.O.C. |
For orders below £199
| For orders under £199 (excluding signage) | £9.00 |
Specialist delivery
| Specialist delivery service (e.g. signage): | POA |
Enhanced delivery options
For priority timed deliveries, weekend or options outside of mainland UK, please contact us for a quotation.
Returns & Cancellation
Trade customers
Faulty, damaged or incorrectly supplied goods
In accordance with our Terms & Conditions of Sale, faulty or damaged goods may be returned if these have been inspected upon delivery or where not possible, signed for them as “not examined” and that we have been notified within 3 working days from receiving the goods.
Incorrectly delivered items must be returned in their original condition, in unopened packaging, as delivered, with proof of purchase.
Unwanted or incorrectly ordered goods
If an order has been placed incorrectly, and that we have been notified within 3 working days from receiving the goods, we may at our discretion agree a return of the goods, however these will be subject to a 20% restocking charge.
Where an item is bespoke or has been decorated returns will not be accepted.
Consumers
Cancellation
If ordering goods as a consumer you have a statutory right to cancel the order for any reason and receive a full refund including any standard delivery charges. To exercise your right you must notify us by email/post/phone within 14 calendar days from order acceptance or from receiving the goods. If the order is delivered in installments, the time-frame ends 14 calendar days after you receive the final installment. This does not apply to bespoke or decorated goods.
Goods must be returned within 14 days from cancellation of order and you will be responsible for returning the goods at your own cost. Any refunds owed will be paid within 14 calendar days, using the same payment method used on the original order.
Returns
You may return faulty, damaged or incorrectly supplied goods within 30 days from receiving them. Goods should be returned in their original condition and we will issue a replacement or refund.
Any refunds owed will be paid within 14 calendar days, using the same payment method used on the original order, including delivery and returns costs.