Timco Bi-Metal Heavy Section Steel Screws – Self-Drilling – Hex – 5.5mm x 55mm – Box of 100

Pack Quantity:
100
SKU: BMH55

Timco bi-metal heavy section steel screws designed for fixing metal to steel up to 12mm without pre-drilling. Featuring a self-drilling No.5 point, hex head, and metric thread with V flutes for fast, secure installation. Suitable for heavy duty steel applications in exposed environments.

£38.58 ex VAT(£46.29 inc VAT)

VIP Club Icon

VIP Members Club

Up to 10% off every order

Fast Delivery Icon

Fast Delivery

Next day delivery options

Products Icon

8,000 + Products

All in one place

Delivery Van Icon

Free Delivery

When you spend over £85

Call us icon red

Need Help?

Our team is here to help with orders, stock or product advice.

Call Us Logo
Call Us

07920120644

Mon - Fri 9am - 5pm

WhatsApp Us

07920120644

Quick replies

Description

Bi metal self drilling screws 55mm fix metal to heavy section steel up to 12mm thick. The self-drilling No.5 point cuts through steel efficiently, so you don’t need to pre-drill. As a result, installation is quicker and more consistent on site.

In addition, the hex head provides a strong drive and helps maintain control during fixing. The metric thread with V flutes improves cutting performance and creates a secure hold in thicker steel sections. This makes them a reliable choice for structural and fabrication work.

These bi metal self drilling screws 55mm use a bi-metal construction. The A2-304 stainless steel body resists corrosion, while the hardened carbon steel drill tip delivers the strength needed to drill into heavy gauge steel. Therefore, they are well suited to urban and industrial environments where durability is important.

  • Self-drilling No.5 point for steel up to 12mm
  • Hex head for controlled and consistent installation
  • Metric thread with V flutes for improved cutting performance
  • A2-304 stainless steel body for corrosion resistance
  • Hardened carbon steel drill tip for drilling strength
  • Suitable for heavy section steel and external applications
Features
Weight 0.895 kg
Brand

Timco

Corrosion Rating (1-5)

4 – Urban & industrial areas with a moderate salt atmosphere

Drill Tip L (mm)

17

Effective Thread L (mm)

34

Finish

Exterior (Silver Organic)

Fixed Washer Dia. mm

11

Head H (mm)

5.3

Head Type

Hex

Length mm

55

Material

Bi-Metal/A2-304 Stainless Steel/Carbon Steel

MDT (mm)

12

Pack Qty

100

Pack Type

Box

Point Type

Self-Drilling No.5

Size

5.5mm x 55mm

Socket Size mm

8

Substrates

Steel

Thread Coverage

Fully Threaded

Thread Dia. mm

M5.5

Thread Type

Metric with V Flutes

Delivery & Returns

All orders to the UK mainland are free of charge over £85 inc VAT. Orders under £85 inc VAT are charged at £9.95. We aim to dispatch orders placed before 3pm Monday to Friday on the same working day, with delivery to most UK mainland addresses typically taking 1–2 working days.

Some products have a longer delivery lead time, such as 3–4 working days. Where this applies, the expected delivery timeframe will be clearly stated on the individual product page. Orders may be dispatched from more than one location and items within the same order may therefore arrive separately. Please see our full Delivery & Returns Policy for further information.

Returns: Please inspect your goods as soon as reasonably possible after delivery and contact us promptly if anything is damaged, incorrect or appears to be faulty. Prompt notification helps us investigate delivery issues with our couriers and suppliers, but does not affect your statutory rights.

For consumer change-of-mind returns, you are responsible for arranging and paying the cost of returning the goods to us. Some products, including ladders, long-length building materials and other oversized goods, cannot normally be returned using standard postal services. For large, heavy or oversized goods that cannot normally be returned by post, we estimate that return carriage may cost up to £75 (including VAT) within the UK mainland. The actual cost will depend on the size and weight of the goods, the collection location and the carrier or return service used.

Please contact us before returning any goods so that we can provide the correct return address and any applicable return instructions or authorisation requirements. Different provisions apply to business customers and to goods that are faulty, damaged, incorrect or misdescribed. Please see our full Delivery & Returns Policy for full details.

Should you require any assistance, please email us at sales@fastfixingsonline.com, call us on 07920 120644, or complete our contact form. We are open Monday to Friday, 9am–5pm.