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You’re building a deck, mounting heavy machinery, or installing outdoor furniture – and you need strong, corrosion‑proof screws that sit perfectly flush. These M6 and M8 countersunk flat head screws are made from A2 stainless steel (304) to DIN 965 standards. The Phillips drive gives you reliable engagement, while the 90° flat head sinks flush into a pre‑drilled countersink, leaving a smooth surface that won’t snag. Available in M6 from 8mm up to 200mm, and M8 from 10mm up to 100mm – measured overall including the head. Fully threaded for most lengths (longer M6 may have partial threads). Perfect for industrial equipment, furniture assembly, marine hardware, and decorative fixtures where both strength and a clean finish matter.
| Thread Diameter | Length Range (mm, overall including head) | Thread Pitch (mm) | Fully Threaded? | Typical Applications |
|---|---|---|---|---|
| M6 | 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200 | 1.0 | Up to ~50mm fully threaded; longer may have partial thread | Furniture, machinery, automotive trim, marine hardware |
📐 Length is measured overall, including the head (top of head to tip). DIN 965 standard defines countersunk head dimensions. Select your required size from the dropdown menu.
| Parameter | Details |
|---|---|
| Product name | Phillips Countersunk Flat Head Machine Screws / Bolts – DIN 965 |
| Material | A2 Stainless Steel (304 / 18-8) – corrosion resistant, high strength, heat resistant, oxidation resistant |
| Standard | DIN 965 (metric countersunk head with Phillips drive) |
| Thread diameters | M6, M8 (6mm and 8mm nominal) |
| Length range (overall) | M6: 8–200mm; M8: 10–100mm (see dropdown for exact options) |
| Head style | Countersunk / Flat head – 90° cone, fits flush after countersinking |
| Drive style | Phillips cross recess |
| Thread type | Metric coarse – fully threaded for shorter lengths; longer screws may have partial thread (unthreaded shank near head) |
| Typical applications | Electronic equipment, mechanical parts, decorative accessories, furniture, marine, industrial, construction |
1. Do I need to countersink the hole for these screws to sit flush?
Yes – these are true countersunk screws (90° cone). For the head to be flush with the surface, you must drill a matching 90° countersink hole. Use a countersink bit of the appropriate size. If you drive them into a straight hole, the head will sit proud.
2. How is the length measured for DIN 965 countersunk screws?
Per DIN 965, the length is measured overall – from the top of the head to the tip. So an “M6 x 30mm” screw has a total length of 30mm, including the head. This is different from pan head screws (which are measured under the head).
3. Are these screws fully threaded? What about longer lengths?
Short lengths (up to about 50mm for M6 and M8) are typically fully threaded. Longer screws may have a partial thread – meaning an unthreaded shank near the head. This is standard for DIN 965. If you need full thread on a long screw, please contact us.
4. Can I use these screws outdoors or in marine environments?
Yes – A2 stainless steel (304) is highly corrosion‑resistant and suitable for outdoor use, coastal areas, and freshwater marine applications. For continuous saltwater immersion, consider A4 (316) stainless, but for most decks, furniture, and machinery, A2 is perfect.
5. What is DIN 965? How is it different from DIN 963/964?
DIN 965 specifies countersunk flat head screws with Phillips drive. DIN 963 is the same head shape but with slotted drive. DIN 964 is raised countersunk (oval head) with Phillips. So DIN 965 is the standard for Phillips drive flat countersunk screws.
6. What Phillips screwdriver size should I use for M6 and M8 screws?
For M6, use a #2 Phillips (PH2). For M8, a #2 or #3 Phillips – #2 works for most, but #3 provides a better fit for larger heads. Always match the bit to the screw to avoid cam‑out and head damage.
