Stainless Steel Wood Screws 4.0 x 50mm Box of 100
Stainless Steel Wood Screws 4.0 x 50mm Box of 100 is backordered and will ship as soon as it is back in stock.
Pick up available at Skibbereen & Bantry within 3-5 days
Shipping & Dispatch
Shipping & Dispatch
Dispatch Time: We typically dispatch orders within 1 working day if all items are in stock.
Weekend Orders: Orders placed on Saturday or Sunday will be dispatched on the following Monday. If Monday is a Bank Holiday, we'll dispatch on Tuesday.
Delivery Time for Ireland: Once dispatched, deliveries within Ireland typically take 2 to 5 working days.
Same-day Dispatch: Orders placed before 9.30 AM are usually dispatched the same day, thanks to our pick-up time with Fastway.
| Destination | Fee |
| Republic of Ireland & Northern Ireland (orders over €100) | Free |
| Republic of Ireland & Northern Ireland (orders under €100) | €7.99 |
| Mainland UK | Please contact us for pricing. |
| Rest of Europe | Please contact us for information. |
| For prices to other countries please contact us | info@thornhillbrothers.ie |
Note: Orders are subject to a max weight of 30kg. Also, for now, we do not send parcels to P.O Box or Parcel Motel addresses.
Local Delivery
We offer FREE local delivery in county Cork, within 100km of either of our stores, for select products on our site. Local delivery orders are delivered within 2-3 business days. You can check local delivery eligibility of products on their product pages.
Dispatch & Delivery
Dispatch Time: We typically dispatch orders within 1 working day if all items are in stock.
Weekend Orders: Orders placed on Saturday or Sunday will be dispatched on the following Monday. If Monday is a Bank Holiday, we'll dispatch on Tuesday.
Delivery Time for Ireland: Once dispatched, deliveries within Ireland typically take 2 to 5 working days.
Same-day Dispatch: Orders placed before 9.30 AM are usually dispatched the same day, thanks to our pick-up time with Fastway.
Local Delivery: Typically delivered in 2-3 business days. Only available for county Cork orders.
Stainless Steel Wood Screws 4.0 x 50mm Box of 100
Key Features
• 4.0 x 50mm A2 stainless steel wood screws — a versatile mid-size screw for general outdoor timber joinery, fencing, and cladding
• 50mm length gives excellent holding power in most softwood and medium hardwood applications
• Full corrosion resistance — won’t rust or stain outdoors, in coastal environments, or in pressure-treated timber
• Countersunk head for a flush, neat finish on decking, fencing, and exterior cladding
• Box of 100 — trade quantity for fencing, garden joinery, and exterior timber projects
Frequently Asked Questions
What can I use 4.0 x 50mm screws for?
A popular general-purpose size for outdoor timber work including fence panel fixing, gate construction, garden furniture assembly, cladding, and light structural joinery. The 4.0mm gauge is strong without being so heavy that it splits thinner boards.
Do I need to pre-drill?
Pre-drilling is recommended in hardwood and near edges and ends to prevent splitting. In softwood, modern self-tapping stainless screws can often be driven without pre-drilling on central face-fixes, but pilot holes are always good practice near edges.
Are they suitable for pressure-treated timber?
Yes — A2 stainless steel is the correct choice for pressure-treated and tanalised outdoor timber, as it resists the chemicals that corrode standard zinc screws over time.
What driver bit do I need?
Typically Pozi PZ2 or Torx TX20 for 4.0mm screws — confirm on the pack label.
What’s the difference between 4.0mm and 6.0mm screws?
4.0mm is a lighter gauge, better suited to thinner timber and boards where a heavier screw might split the wood. 6.0mm is a heavier structural gauge for thick decking, posts, and high-load connections.
A2 (304) stainless steel. Suitable for outdoor, coastal and pressure-treated timber applications.
