Drywall Black Phosphate Screws 3.5 X 50mm
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
See our full range:
Description
PROFESSIONAL GRADE DRYWALL INSTALLATION
Securing plasterboard correctly is the fundamental stage of any interior partition project. When you are tasked with mounting boarding to wooden frames or thin sheet metal, the choice of fastener determines the integrity of your finish. Low quality fixings often result in stripped heads, surface damage, or frustrating pull-out issues that can compromise the safety and aesthetics of a wall system. At Doorfit, we understand that reliability on site is not a luxury but a necessity for trade professionals and home renovators alike.
Our Drywall Black Phosphate Screws 3.5 x 50mm are engineered to meet these challenges head on. By combining a hardened steel core with a specialised black phosphate coating, these fasteners provide excellent corrosion resistance while ensuring a rock solid hold within the substrate. Whether you are fitting out a small renovation or working on a large scale commercial development, choosing the right screw geometry is the easiest way to prevent snagging and ensuring your boards remain perfectly flush against your studs.
These screws are designed to disappear into your finish, leaving a clean surface that is ready for plastering or painting with minimal remedial work. We pride ourselves on supplying hardware that works with you, not against you, during the long hours of a busy site installation.
PRECISION FIT
The precision engineered PH2 recess ensures your driver bit stays seated firmly without slipping. This means fewer damaged screw heads and faster installation times even when working in awkward overhead positions or confined spaces.
RAPID ASSEMBLY
Featuring a sharp 25 degree point, these fasteners bite instantly into materials like MDF, timber, and thin sheet metal. This rapid entry reduces the need for pilot holes and keeps your assembly moving at pace.
UK CERTIFIED
Supplied by Doorfit to meet rigorous quality expectations for the British construction market. Every batch is checked for thread consistency and head strength to ensure you get a consistent product in every single box.
MANUFACTURING INTEGRITY
The structural integrity of a wall begins with the fasteners you cannot see. Our manufacturing process focuses on creating a high strength bugle head that sits perfectly level with the plasterboard surface. This specific curvature prevents the common issue of tearing the paper face of the board, which often leads to structural failure or a poor decorative finish once the paint is applied. By applying consistent pressure across the head, the board is held securely without being over tightened or damaged during the final drive.
The thread configuration is equally vital to the performance of these Drywall Black Phosphate Screws. Our classic thread profile is specifically designed to provide high pull out resistance in both softwoods and thinner metallic track systems. This partially threaded design on the 50mm length is ideal for bridging gaps and pulling materials tight together with minimal effort. The black phosphate plating acts as a protective shield, preventing surface rust and ensuring the screws remain solid and reliable for the duration of the building's lifecycle.
Uniform thread depth ensures consistent bite and maximum holding power in all standard plasterboard applications.
Generous pack sizes are designed to keep your tool bag ready for immediate use on site.
PROVEN APPLICATION BENCHMARKS
These screws are the preferred choice for installing drywall in residential or commercial settings where time and precision are everything. Their ability to handle diverse materials like chipboard and thin sheet metal up to 0.6mm thickness makes them a versatile addition to any professional tool kit. You will find that the sharp point starts the drive immediately, reducing hand fatigue and allowing you to maintain a steady rhythm across large wall panels or ceiling runs.
When you choose these 3.5 x 50mm screws, you are selecting a product that has been refined through years of trade feedback. We understand that a screw is only as good as the finish it produces. That is why our focus remains on delivering a product that balances raw strength with the finesse required for high quality interior work. Rely on our expertise and these high performance fixings to bring your construction projects to completion smoothly and efficiently.
Detailed Specifications
| Feature | Technical Rating | Notes |
|---|---|---|
| Product Size | 3.5mm x 50mm | Standard gauge for board |
| Head Style | Bugle Head | Protects board surface |
| Recess | Phillips No. 2 | Industry standard bit |
| Material Finish | Black Phosphate | Enhanced anti-corrosion |
| Point Type | 25 Degree Sharp Point | Instant penetration |
Ready to Order or Enquire?
Doorfit · Fast Nationwide Dispatch · Full Trade Warranty
Specification
| Finish | Black |
|---|

