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The Stainless Steel Slotted Countersunk Machine Screws are precision fastening components designed for applications that require a clean, flush surface after installation. Featuring a flat countersunk head, single slotted drive, and fully threaded shank, these screws are suitable for metal parts, machinery, equipment, furniture hardware, electrical components, and general industrial assembly.
Made from stainless steel, these fasteners provide good corrosion resistance, a clean metallic appearance, and reliable fastening performance. The countersunk head allows the screw to sit flush with the surface when installed into a matching countersunk hole, helping create a smooth and professional finish.
| Item | Specification |
|---|---|
| Product Name | Slotted Countersunk Machine Screw |
| Material | Stainless Steel |
| Head Type | Countersunk Flat Head |
| Drive Type | Slotted Drive |
| Thread Type | Machine Thread |
| Thread Design | Fully Threaded |
| Surface Appearance | Silver Metallic Finish |
| Installation Tool | Flat-Blade Screwdriver |
| Application | Machinery, Metal Assembly, Equipment, Furniture Hardware, Electrical Components |
| Product Category | Machine Screws / Flat Head Screws / Countersunk Fasteners |
| Part | Description |
|---|---|
| Countersunk Flat Head | Allows the screw head to sit flush with the workpiece surface |
| Slotted Drive | Designed for installation with a flat-blade screwdriver |
| Fully Threaded Body | Provides continuous thread engagement along the screw length |
| Stainless Steel Body | Offers corrosion resistance and clean surface appearance |
| Flat End | Supports stable fastening in tapped holes or with matching nuts |
| Advantage | Description |
|---|---|
| Flush Installation | Countersunk head design creates a smooth surface after tightening. |
| Corrosion Resistance | Stainless steel material helps resist rust in general working environments. |
| Easy Operation | Slotted drive is simple and widely compatible with common tools. |
| Strong Thread Engagement | Fully threaded design improves fastening contact with tapped holes or nuts. |
| Clean Appearance | Silver stainless steel surface is suitable for visible assemblies. |
| Wide Application | Suitable for industrial, commercial, and general hardware use. |
| Application Area | Typical Use |
|---|---|
| Machinery Assembly | Machine covers, panels, brackets, and equipment parts |
| Metal Fabrication | Countersunk holes, flush surface fastening, metal plates |
| Electrical Equipment | Enclosures, control boxes, terminal parts, panels |
| Furniture Hardware | Metal furniture, cabinet hardware, decorative fixing |
| Industrial Equipment | Instruments, fixtures, frames, and mechanical components |
| General Maintenance | Repair, replacement, and assembly fastening |
Slotted countersunk machine screws are used when a flat and smooth surface is required after installation. The countersunk head fits into a matching countersunk hole, reducing surface protrusion and improving the appearance of the assembled part.
The fully threaded design provides stable fastening along the entire screw body. When used with a tapped hole or matching nut, it offers secure connection performance for metal and equipment assembly.
| Step | Recommendation |
|---|---|
| Prepare Hole | Use a matching countersunk hole for flush head installation. |
| Match Thread | Ensure the tapped hole or nut matches the screw thread. |
| Select Tool | Use a suitable flat-blade screwdriver. |
| Tighten Carefully | Apply even pressure to avoid damaging the slotted drive. |
| Check Finish | Confirm the countersunk head sits flush with the surface. |
| Custom Item | Available Option |
|---|---|
| Length | Custom length available |
| Diameter | Custom diameter available |
| Material | Stainless steel |
| Head Type | Countersunk flat head |
| Drive Type | Slotted drive |
| Thread Design | Fully threaded |
| Packaging | Bulk packing, small box packing, carton packing, customized packing |
A slotted countersunk machine screw is a threaded fastener with a flat countersunk head and a single straight slot drive. It is designed to sit flush with the surface after installation.
This screw is made from stainless steel.
Fully threaded means the screw has threads along the body, providing continuous thread engagement with a tapped hole or matching nut.
This screw uses a slotted drive, so it can be installed with a flat-blade screwdriver.
It can be used in machinery, metal assembly, equipment, furniture hardware, electrical components, and general industrial fastening.
Yes. When installed into a matching countersunk hole, the flat head can sit flush with the surface.
Yes. It can be used with matching nuts or tapped holes.
Yes. Diameter, length, packaging, and related specifications can be customized according to customer requirements.
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Complies with major global standards such as ISO/DIN/GB/ANSI/JIS
Standard parts + customized parts, one-stop solution for all your fastening needs
Tolerance control far exceeds industry standards, ranging from 4.8 to 12.9 grades.
Customization based on provided drawings/samples/working conditions; rapid prototyping and mass production delivery.
Trusted by global manufacturers for fastener solutions
International Organization for Standardization (ISO) standards
German Industrial Standards
Chinese National Standards
American National Standards
Japanese Industrial Standards
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