Components ()
View all results.
Categories ()
View all results.
Sorry, we couldn't find anything for that search.
Recent Searches.
Return to Countersunk Screws

Metric Slotted Countersunk Screws.

No products match the filters selected.

Please clear the filters and try again.

No Results
Metric Slotted Countersunk Screws

What are Metric Slotted Countersunk Screws?

Slotted countersunk screws are a quintessential component in precision engineering, designed to sit flush with their target housing. These screws are characterized by their conical bearing surface with a flat top and a slotted drive. The countersunk slotted screw design is engineered for applications where a smooth surface is a critical attribute, ensuring there are no protrusions once the screw is installed into a countersunk tapped thread such as in classical car bodywork and intricate moving workpieces.

How Slotted Countersunk Screws Work.

The ingenuity of slotted countersunk flat-head screws lies in their ability to align perfectly with the material's surface. When driven into a countersunk hole, the angled sides of the screw head align with the sloped sides of the hole. This allows the top of the screw to sit flush with the surface, offering a neat finish and reducing the risk of snags or abrasions.

The choice of a slotted drive type for these aptly named slotted countersunk machine screws is deliberate, providing a classic, straightforward approach to driving the screw while allowing for a satisfactory level of torque application without the need for specialized tools. This traditional drive type is favoured for its simplicity and the ease with which it can be aligned, ensuring a secure and precise installation.

What Material Countersunk Slotted Screws Are Made From.

Material selection for countersunk slotted screws is pivotal, as it directly influences the performance and suitability of the screw for the task at hand. Accu’s range includes Brass for its machining ease, A2 Stainless Steel for general-purpose applications, A4 Stainless Steel for environments prone to corrosion, Nylon for electrical insulation, and PVDF and Polypropylene for superior chemical resistance. The chosen material ensures the screw’s integrity and functionality within its specific application environment.

Accu’s additional finishes, such as the AccuBlack chemical blackening process provide a reflection-free matte finish while enhancing corrosion resistance. The AccuLock finish involves applying a thread-locking patch to the screw, increasing its resistance to loosening under vibrational forces, giving you that added security while saving you time when it comes to installation.

What Size and Type Slotted Countersunk Screws Are Available.

Our slotted countersunk head screws, manufactured to DIN 963, come in sizes ranging from the delicate M0.5, suitable for intricate assemblies such as watchmaking, up to the robust M16, for larger-scale engineering projects. Lengthwise, our range spans from the minute 2mm all the way to the longer 160mm. Accu provides a comprehensive selection of these screws in both metric and imperial sizes, catering to a vast array of industrial and commercial applications.


Q: Why are countersunk slotted screws ideal for my project?.

A: Countersunk slotted screws are the fasteners of choice when a smooth, seamless finish is required. Their design allows them to lie flush with the surface, preventing snags and providing a clean look. Additionally, the slotted drive provides a fast and relatively easy way of installation.

Q: Are slotted countersunk screws available in materials suited for outdoor use?.

A: Yes, slotted countersunk screws are offered in A4 Marine Grade Stainless Steel and Nylon, which boast excellent outdoor durability due to their resistance to corrosion and environmental conditions.

Q: What tool should I use to install slotted countersunk screws?.

A: A flat-head screwdriver that fits the slot width and length precisely is the ideal tool for installing slotted countersunk screws to avoid cam-out and ensure a secure fit.

Q: How do I choose the correct slotted countersunk screw for my application?.

A: The correct screw size depends on factors like the thickness of the materials being fastened, the load they need to bear, and whether the surface needs to remain flush. When choosing your size, pay close attention to the thread size as this will dictate what size screw to install.

Q: What is the minimum order quantity for slotted countersunk screws at Accu?.

A: Accu is proud to offer the flexibility to order as few as one slotted countersunk machine screw to as many as millions, accommodating both small-scale projects and bulk industrial orders.

Bespoke Metric Slotted Countersunk Screws Manufacture.

High precision, bespoke manufacture of Metric Slotted Countersunk Screws to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.

Get A Quote
Metric Slotted Countersunk Screws Reviews

Your Browsing History.