🧀 M1.6 M2 M2.5 Slotted Cheese Head Machine Screws – DIN 84, 304 Stainless Steel, Fully Threaded
You’re restoring a classic instrument, repairing a vintage appliance, or assembling a precision mechanism – and you need a screw with a traditional tall cylindrical head and a simple slotted drive. These M1.6 to M2.5 cheese head screws conform to DIN 84, featuring a high, straight‑sided head that provides deep slot engagement for a flathead screwdriver. Made from 304 stainless steel (A2), they offer excellent corrosion resistance, high strength, and good toughness – perfect for outdoor, marine, and industrial applications. Fully threaded, with length measured under the head. Ideal for electronics, machinery, and restoration projects where a classic, reliable fastener is required.
✨ Key Features – Slotted Cheese Head Machine Screws (DIN 84)
- 🧀 Cheese head (cylindrical) design – DIN 84 – Tall, straight‑sided head provides a deep, wide slot for secure driver engagement. Offers good bearing surface without countersinking.
- 📏
Slotted drive – Classic single slot works with any flathead screwdriver. Ideal for restoration, low‑tech, or precise torque applications.
- 🛡️ A2 stainless steel (304) – Excellent corrosion resistance, oxidation resistance, and heat resistance. High strength and toughness for demanding environments.
- 📏 Metric sizes M1.6, M2, M2.5 – Tiny diameters perfect for micro‑electronics, instruments, and delicate assemblies.
- 📐 Fully threaded, length under head – Example: M2 x 6mm means thread diameter 2mm, length from under head to tip is 6mm. Fully threaded for maximum grip.
- ⚙️ Precision threads – Metric coarse pitch, clean and burr‑free. Uniform force distribution.
- 🔧 Widely used – Antique radio/clock restoration, model making, electronics, medical devices, and marine hardware.
📏 Specifications – M1.6 to M2.5 Slotted Cheese Head Screws (304 Stainless)
| Thread Diameter (M) |
Thread Pitch (mm) |
Typical Lengths (mm, under head) * |
Head Height (approx.) |
Head Diameter (approx.) |
Material |
| 📐 Length measured from underside of head to tip. Fully threaded. Select exact size from dropdown. |
| M1.6 |
0.35 |
3, 4, 5, 6, 8, 10, 12, 16, 20, 25
(exact availability varies) |
~1.1 mm |
~3.0 mm |
A2 304 Stainless Steel |
| M2 |
0.4 |
~1.3 mm |
~3.5 mm |
| M2.5 |
0.45 |
~1.5 mm |
~4.5 mm |
* Lengths are typical – exact availability may vary. Head dimensions are approximate based on DIN 84. Please refer to the attached parameter diagram. All values manually measured – minor errors possible.
📋 DIN 84 Standard – Why Cheese Head?
| Feature |
Benefit |
| Tall cylindrical head |
Provides a deep slot, giving excellent driver engagement – less chance of slipping compared to shallow pan head slots. |
| Slotted drive |
Works with any flathead screwdriver; no special bits. Easy to clean and maintain. |
| A2 stainless steel |
Corrosion resistant, non‑magnetic, strong – suitable for medical, marine, and food equipment. |
| Fully threaded |
Maximum thread engagement in blind holes or through‑nut applications. |
❓ Frequently Asked Questions – Slotted Cheese Head Screws
1. How do I measure the length of a cheese head screw?
For cheese head screws (DIN 84), length is measured from the underside of the head to the tip. The head itself is NOT included. So an “M2 x 6mm” screw has a 6mm long threaded shaft under the head. This matches our listing.
2. Are these screws fully threaded? What about longer lengths?
Yes – all screws in this range (M1.6 to M2.5) are fully threaded from under the head to the tip, giving you maximum grip in shallow holes or when using nuts.
3. Why choose cheese head over pan head or countersunk?
Cheese head screws have a tall, straight‑sided head that provides a deeper slot, making it easier to drive with a flathead screwdriver without slipping. They are often used in applications where head height is not a constraint but a secure slotted drive is desired – common in older machinery and restoration.
4. Can I use these screws outdoors? Will they rust?
A2 stainless steel (304) is highly corrosion‑resistant and suitable for outdoor use in most environments – rain, humidity, and coastal areas. For continuous saltwater immersion, consider A4 (316) stainless, but for general outdoor applications, A2 is excellent and will not rust.
5. What screwdriver size do I need for these tiny slotted screws?
Use a flathead screwdriver with a blade width matching the slot. For M1.6–M2.5, a 1.5–2.0mm blade works best. Precision electronics drivers often have these sizes. Always use the correct size to avoid damaging the slot.
6. Can I use these screws with a nut? What size nut fits?
Yes – these are machine screws. Use standard metric nuts of the same thread size (M1.6, M2, or M2.5). For very small sizes, tapping the hole directly is often more practical than using nuts.
