Best current price£8.28from The Range
Shopping.co.uk recommended and popular offers
The Range£8.28Visit shop Unifix Grade 10.9 Socket Csk Head Screws M6 X 12 - Box Of 200 - Grey
Visit shop39 offers from £8.28 - £33.90
View price history by clicking the chart icon.
Designed for professionals and DIY enthusiasts in the construction and engineering sectors, these Unifix Grade 10.9 Socket Countersunk Head Screws offer superior tensile strength for high-load applications. Manufactured to DIN 7991 standards, they feature a sleek, flush-mount design that ensures a clean finish on any surface. While their high-grade steel construction provides exceptional reliability, users should note that they require specific hex key sizes for proper installation to avoid stripping the internal drive.
| Colour | Grey |
|---|---|
| Model Part Number | 1355321 |
| Brand | Unifix |
Grade 10.9 indicates the tensile strength of the steel; it is a high-strength fastener typically used in mechanical applications that require durability and resistance to shearing.
They feature a bright zinc plating which provides corrosion resistance, but they are generally intended for indoor or dry-climate use. They are not recommended for salt-heavy or marine environments.
DIN 7991 is a German standard that defines the dimensions and specifications for hexagonal socket countersunk head screws.
Yes, for metal applications, you must drill and tap the hole to the correct size. For wood, you must pre-drill and countersink to ensure a clean flush fit.
Yes, due to their steel construction, these Grade 10.9 screws are magnetic.
Ensure the pilot hole has been countersunk to the proper depth and angle to accommodate the screw head taper.
Verify that you are using a hex key of the correct metric size and ensure the tool is fully seated in the socket before applying pressure.
Use a tapping tool to pre-thread the hole or apply a small amount of lubricant to the screw threads.
To achieve the best results, use a high-quality hex key (Allen key) that matches the socket size of the fastener to prevent stripping the internal drive. It is recommended to apply a small amount of thread-locking compound if the fastener is intended for use in areas subject to high-frequency vibration. When handling and storing, keep the screws in a dry, low-humidity area; although zinc-plated, excessive moisture exposure over extended periods can eventually compromise the finish. Do not use power drills at high torque during initial threading, as this can easily over-tighten and damage the material threads.
