Buy Stainless Steel Self-Drilling Timber Screws | 6x150mm T25 Torx Self Drilling Wood Screws

A2 TX25 Self-Drilling Torx Wood Screws 6.0mm x 150mm

Heavy duty self-drilling timber screws with cutting point

Countersinking ribs under head

T25 6-Lobe (torx) drive recess

ORDER BY 3PM FOR NEXT DAY DELIVERY (MON-FRI)*

ORDER BY 3PM FOR NEXT DAY DELIVERY*

FREE STANDARD DELIVERY ON ORDERS OVER £100*

FREE STANDARD DELIVERY OVER £100*

Description
Delivery

A2 Stainless Steel Self-Drilling Torx Wood Screws

Self-drilling stainless steel wood screws designed for timber-to-timber fixing without the need for pilot holes in most applications. Suitable for exterior use where corrosion resistance and fast installation are important. These screws are also suitable for cement board to timber substrate applications.

Product Features & Typical Applications

Key features

• A2 stainless steel for corrosion resistance in outdoor timber
• Self-drilling point reduces or removes the need for pre-drilling
• Torx TX20 drive for secure bit engagement and reduced cam-out
• Countersinking ribs under the head for a flush finish
• Suitable for use with many tannin-rich timbers

Typical applications

• Timber framing and general joinery
• Decking, fencing and garden structures
• Cladding and exterior timber boarding
• Steps, balustrades, and outdoor joinery
• Cement boards onto timber substrates
• Landscaping and site timber work

Practical benefits

These screws speed up installation by cutting their own path into timber, reducing time spent pre-drilling. The TX20 Torx drive provides solid engagement, allowing higher torque transfer with less risk of slipping or damaging the head. Countersinking ribs help the head seat cleanly into the timber for a neat, flush finish.

Manufactured from A2 stainless steel, they provide dependable resistance to corrosion in most external environments.

Self-Drilling Wood Screws FAQ's

What does self-drilling mean in wood screws?
Self-drilling wood screws have a specially formed point that helps them cut into timber without a separate pilot hole in many situations.

Do I still need to pre-drill?
In most softwoods pre-drilling is not required. In dense hardwoods, a pilot hole may still be recommended.

What drive type is TX20?
TX20 refers to a Torx drive size. It offers better grip between bit and screw, reducing cam-out and improving driving control.

Are A2 stainless screws suitable for outdoor use?
Yes, A2 stainless steel is suitable for most external timber applications. For coastal or highly corrosive environments, A4 stainless steel is typically preferred.

Can I use these screws on cement board?
Yes, these screws are an excellent choice for cement board as the self-drilling point will drill through the boards without pre-drilling, and the A2 stainless material offers excellent corrosion resistance.

Specifics & Technical Info

Thread diameter (d): 6mm
Length (l): 150mm
Thread length (b): 70mm
Head diameter (dk): 12mm
Shank diameter (ds): 4.25mm
Drill bit length (lp): 5.8mm
Torx recess (TX): TX25
Material: A2 (304) Stainless steel
Tensile strength: 500 N/mm2
Finish: Self-colour (no plating)
European Technical Assessment: ETA 11/0283
UK Technical Assessment: UKTA 22/6473
Installation note: A minimum screw-in depth of 4x the diameter must be ensured. A screw-in depth of 8x the diameter should ideally be achieved.

technical line drawing of a2 stainless steel self drilling torx drive timber screws

Delivery Options

TC Fixings Ltd offers a range of delivery services across the UK to suit different order sizes and delivery times. Orders are dispatched using reliable courier and postal services to ensure products arrive quickly and safely.

Delivery Summary

Free delivery: Orders over £30 nett qualify for free delivery
Same-day dispatch: Orders placed before 15:00 Monday–Friday are usually dispatched the same day (subject to stock availability)
Collection: Available from our premises
Local delivery: Free van delivery available in Saffron Walden and surrounding villages

Free Delivery

Orders over £30 nett qualify for free delivery.

If your order is close to the threshold, adding additional items may allow you to qualify for free delivery.

Free delivery applies to standard mainland UK delivery only.

Delivery Charges

Orders under £30 nett are subject to carriage charges. Available delivery options are shown below.

Royal Mail Services (Up to 2kg)

Service	Delivery Time	Cost
Royal Mail Standard 48 Tracked	3–5 working days	£4.99
Royal Mail 24 Tracked (Most Popular)	1–3 working days	£5.99
Special Delivery by 1pm	Next working day	£14.99
Special Delivery by 9am	Next working day	£49.99

Royal Mail services are available for consignments up to 2kg.

Courier Services

Service	Delivery Time	Cost
Standard Courier	2–3 working days	£6.98
Express Delivery (Most Popular)	1–2 working days	£8.99
Next Working Day by 13:00	Next working day	£10.99
Next Working Day by 11:00	Next working day	£14.99
Saturday Delivery	Saturday	£9.98

Orders placed before 15:00 Monday–Friday are normally dispatched the same working day, subject to stock availability.

Delivery Surcharges

Additional charges may apply in certain circumstances.

Extended Delivery Areas

Orders to the following locations may incur additional delivery charges:

Isle of Wight
Isle of Man
Scottish Highlands
Scottish Isles
Northern Ireland
Channel Isles

These charges will be shown at checkout where applicable.

Long Item Surcharge

Items measuring 1.5 metres or longer are subject to a £12 length surcharge per shipment.

Dispatch Information

Orders placed before 15:00 Monday–Friday are normally dispatched the same working day when all items are in stock.

Orders placed after this time, or on weekends and bank holidays, will be dispatched on the next working day.

Next working day delivery services apply Monday–Friday excluding bank holidays.

Collection

Customers may collect orders from our premises.

Collection orders are normally ready within 1 hour, provided all items are in stock. Please wait for confirmation before travelling to collect your order.

Local Van Delivery

TC Fixings offers a free local van delivery service to customers in Saffron Walden and surrounding villages.

Please contact our team for further information if you are located in this area.