A4 Stainless Torx Wafer Head Timber Screws 70mm

A4 SS TX20 Torx Wafer Head Timber Construction Screws 4.5x70mm

ETA approval for use in structural applications

A4 (316) Marine grade stainless steel

Ideal for fixing oak sleepers

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

Pan Washer Head Timber Screws with Cutting Point

Pan washer head timber screws designed for secure timber connections with high bearing capacity and rapid thread engagement. Available in A4 stainless steel with a TX drive and cutting point for efficient installation in outdoor and structural timber applications.

Product Features & Typical Applications

Key Features

• Pan washer head for increased clamping surface
• Cutting point for fast start and reduced splitting
• Partial thread for tight timber-to-timber compression
• High-strength steel construction
• Deep drive recess for improved torque transfer
• Corrosion-resistant finish (grade dependent)

Typical Applications

• Timber framing
• Decking and landscaping structures
• Timber boarding and cladding
• Roofing battens
• Carcassing and structural timber joints
• Fencing and garden buildings

Practical Benefits

The cutting point reduces the need for pre-drilling in most softwood applications, saving time on site.

The wide washer head spreads the load, reducing the risk of pull-through in softer materials and sheet timber.

Partial thread design helps draw timbers tightly together for solid, secure joints.

Suitable for both internal and external applications depending on material grade.

Torx Wafer Head Screws FAQ's

What is a pan washer head timber screw used for?
It is used where a larger head bearing surface is needed to prevent pull-through, particularly in timber framing and decking applications.

Do pan washer head screws need washers?
No. The integrated washer-style head removes the need for a separate washer.

Do I need to pre-drill timber?
In most softwoods, the cutting point allows direct driving. Pre-drilling may be required in hardwoods or near edges.

Are these screws suitable for outdoor use?
This depends on the material grade. Stainless steel versions are suitable for external and corrosive environments.

What is the benefit of a partial thread?
A partial thread pulls two pieces of timber tightly together, improving joint strength and reducing movement.

Specifics

Thread dia (d): 4.5mm
Head dia (dk): 13mm
Head height (k): 3.2mm
Length (l): 70mm
Thread length (b): 42mm
TX drive size: TX20
Material: A4 (316) marine grade stainless steel
Tensile strength: 500 N/mm2
For application: Timber to timber

technical line drawing of A4 stainless steel railway sleeper 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.