From the trusted RS PRO brand, this set of high-quality hexagonal metric cap and socket screws have a hexagonal drive and a black oxide finish. Socket screws are tightened using an Allan or Hex key, making them ideal for use in applications where externally wrenched fasteners are not practical because of a lack of space. Metric cap head screws have a larger head diameter than the screw shaft yet a smaller diameter than most machine screws, making them more appropriate for holding thin materials such as sheet metal guards while still being discreet.

In this kit, you will find a range of 450 socket screws with metric cap heads and hexagonal sockets for Allan or hex keys. The kit includes thread sizes of M3, M4 and M5 with lengths ranging from 6mm to 30mm.

• Button head hexagonal socket screws to DIN912 standards


• Steel with black oxide finish


• Supplied in a polypropylene case with a hinged lid

The strength of steel due to its carbon content makes it a versatile component material that can withstand wear and tear. The black oxide finish provides a resistance to corrosion and wear, granting these screws the same qualities as their stainless steel counterparts.

Compared to ordinary fasteners, fewer socket screws of the same size can achieve an equal clamping force in a joint. As fewer screws are required for a given job, fewer holes are required to be drilled and tapped, as well as reducing the overall project weight as fewer, smaller screws are used.

• Carpentry


• Construction and roofing


• DIY applications


• Machinery applications

What Does M2.5, M3, M3.5, M4, M5, etc. mean?

These measurements are found on metric screws, The 'M' stands for Metric. The number after the 'M' is the nominal outer diameter of the screw in mm.

Why RS PRO?

RS PRO aims to be your go-to brand for reliability and value for money. We source great parts at great prices and test everything with our in-house experts to ensure the quality you need. When it comes to tools and fasteners, we know that versatility and dependability are what you need. As such, we stock a variety of mainstay and specialist fasteners and couplers to suit any application. Whether you're a professional electrician, plumber, builder or DIY enthusiast, RS PRO is here to support you.