M4.5 x 55 Brown Decking Screw (200/Box)
Box of 200 exterior decking screws (M4.5 x 55, brown) with corrosion-resistant coating and countersunk head. Ideal for hardwood and softwood decks. Secures dense timber boards and composite decking.
Product Overview
Box of 200 exterior decking screws (M4.5 x 55, brown) with corrosion-resistant coating and countersunk head. Ideal for hardwood and softwood decks. Secures dense timber boards and composite decking.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
| Screws & Fixings and Adhesives & Sealants | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £10 ex. VAT |
| Over £300 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{shield}} Exterior-grade fasteners
- {{keyboard_double_arrow_down}} Coarse single thread and sharp point
- {{vertical_align_center}} Countersunk head clamps boards to joists
- {{fitness_center}} Hardened carbon steel
Technical Specification
| Material Type: | Ruspert Coated Steel |
|---|---|
| Length: | 55mm |
| Box Quantity: | 200 |
| Sales Unit: | Box |
| Colour: | Brown |
| Collated: | No |
| Diameter: | 4.5mm |
| Head Type: | Countersunk |
| Indoor/Outdoor Usage: | Outdoor |
| Drive Type: | Pozi |
| Thread Length: | Fully Threaded |
Product Overview
M4.5 x 55 Brown Decking Screws for reliable board-to-joist fixing in hardwood, softwood, and treated timbers.
Each screw is manufactured from Ruspert-coated steel, featuring a durable three-layer metallic coating of zinc, film, and ceramic.
This advanced finish offers excellent corrosion resistance and a subtle, low-visibility appearance that blends seamlessly with stained or dark decking boards.
The countersunk head draws boards tight for a flush, professional finish with reduced movement and creak.
A sharp, coarse thread provides fast bite, controlled driving, and dependable pull-down across dense timber boards and composite decking.
Features & Benefits
- Exterior durability: Hardened carbon steel with corrosion-resistant coated finish for outdoor decking conditions.
- Flush finish: Countersunk head clamps boards to joists for a smooth walking surface.
- Fast bite: Coarse single thread and sharp point promote rapid insertion and strong pull-out resistance.
- Timber compatibility: Suitable for softwood, many hardwoods, and pressure-treated joists; pilot drilling recommended for dense boards and near edges.
- Visual blend: Brown coating helps minimise head visibility on darker or stained timber.
- Nominal size: M4.5 x 55mm.
- Tub quantity: Supplied in a box of 200 for efficient deck coverage and fewer on-site restocks.
Applications
- Dense timber decking: Provides deep thread engagement for hardwood or high-density treated boards.
- Composite decking boards: Reliable fixing into timber subframes; maintains hold under thermal movement.
- Perimeter trims and step edges: Ensures tight, flush fixing in visible deck details.
- Intermediate joist fixing: Suitable for standard board-to-joist attachment where extra bite is required.
- Outdoor carpentry: Ideal for heavy fascia boards, planters, and structural edging in garden projects.
Installation Guidance
- Pilot & clearance: Pilot dense hardwoods and pre-drill near board ends to limit splitting.
- Driving technique: Drive at moderate speed with steady pressure; avoid over-torque that can strip fibres.
- Head seating: Countersink until flush; do not bury the head below the board surface.
- Good practice: Maintain consistent board gaps and fix each board with two screws per joist line.
Compliance & Performance
- Manufacturing reference: Produced to relevant timber fastener requirements (EN 14592 reference for mechanical fasteners).
- Corrosion protection: Exterior coated finish suitable for typical residential exposure; check local exposure class.
- Substrate suitability: Use with timber and most composite-over-timber installs; verify composite manufacturer guidance.
- Safety: Wear eye protection; support boards during fixing.
- Important note: For aggressive/coastal environments or permanent wet areas, specify stainless steel grade fasteners.
