🔩 Countersunk Slotted Head Screw (CSK Slotted) – Traditional Flat Drive | Neo Fasteners
CSK Slotted Screws, also called Flat Head Slotted Screws, are classic fastening solutions with a countersunk (flat) head and a single-slot drive. These screws sit flush with the surface and offer a clean, low-profile finish. Ideal for light-duty, aesthetic, or vintage applications, CSK slotted screws are widely used in woodworking, switchboards, terminals, electrical accessories, brassware, and general assembly work.
At Neo Fasteners, we supply a complete range of CSK slotted screws in steel, stainless steel, brass, and nylon, with customization available in size, thread, material, and finish.
🛠️ Key Features
- Countersunk Head Design: Flush surface finish when installed
- Slotted Drive: Classic straight-slot for flathead screwdriver
- Decorative Appeal: Neat and retro-style look
- Widely Used: Compatible with traditional fastening tools
- Smooth Surface Contact: Distributes load evenly
📐 Available Sizes
🔹 Metric Sizes (DIN 963 / ISO 2009)
| Diameter | Pitch | Head Dia. | Head Height | Slot Width | Length Range |
|---|---|---|---|---|---|
| M2 | 0.4 | 4.0 mm | 1.2 mm | 0.5 mm | 4–16 mm |
| M2.5 | 0.45 | 5.0 mm | 1.5 mm | 0.6 mm | 4–20 mm |
| M3 | 0.5 | 6.0 mm | 1.6 mm | 0.8 mm | 6–30 mm |
| M4 | 0.7 | 8.0 mm | 2.2 mm | 1.0 mm | 8–40 mm |
| M5 | 0.8 | 10.0 mm | 2.5 mm | 1.2 mm | 10–50 mm |
| M6 | 1.0 | 12.0 mm | 3.0 mm | 1.4 mm | 12–60 mm |
| M8 | 1.25 | 16.0 mm | 4.0 mm | 1.8 mm | 16–80 mm |
Inch sizes also available (#2 to 1/2”)
🧱 Material Options
- Mild Steel (MS): Standard, economical option
- Stainless Steel (SS 202, SS 304, SS 316): Corrosion-resistant
- Brass (IS 319): Decorative & non-magnetic
- Nylon (White/Black): Non-conductive, for electrical use
- High Tensile Steel (8.8 / 10.9): Available on request
🎨 Finish Options
| Finish Type | Appearance | Application |
|---|---|---|
| Zinc Plated (White/Yellow) | Bright/Silver | Indoor use, electrical fittings |
| Nickel Plated | Bright silver | Decorative and rust-resistant |
| Chrome Plated | Mirror finish | Automotive and high-end furnishings |
| Black Oxide | Matte black | Machinery, tools, aesthetics |
| Natural Brass | Golden tone | Decorative/antique applications |
| Self Color / Plain | Untreated metal | Custom treatment or welding use |
⚙️ Thread Types
- Metric (Full Thread – DIN 963 / ISO 2009)
- Inch threads: UNC, UNF, BSW
- Self-tapping type (on request)
- BA / Custom pitch available for electrical/antique work
✅ Standards
- DIN 963 – Slotted Countersunk Machine Screws
- ISO 2009 – Equivalent global standard
- RoHS Compliant | ISO 9001:2015 Certified
📦 Packaging & Supply
- 100 pcs / 500 pcs / 1000 pcs in boxes
- Bulk carton packaging for OEMs
- Barcoding & labeling for inventory systems
- MTC (Material Test Certificate) on request
- Custom kitting and branding available
🧰 Applications
- Electrical terminals and switchgear
- Furniture & cabinetry
- Brassware and hardware assembly
- Antique and retro-style repair work
- Sheet metal and plastic enclosures
- Instruments and small appliance manufacturing
📞 Contact Neo Fasteners
📧 Email: neofasteners@yahoo.com
📞 Call/WhatsApp: +91-96328 07665
🌐 Website:
🔗 neofasteners.com (Google Site)
📍 Location: Bengaluru, Karnataka, India