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When the job demands the ultimate protection against saltwater, chemicals, and harsh outdoor conditions, these M6 Pozi button truss head self‑tapping screws in A4 / 316 stainless steel deliver unmatched corrosion resistance. The wide truss head spreads clamping force to prevent pull‑through in sheet metal, plastic, and wood, while the low‑profile button shape provides a clean, finished appearance on visible assemblies. The Pozi drive recess grips your driver firmly, reducing cam‑out compared to a standard Phillips — perfect for machine tools, camera tripods, brackets, and marine hardware where repeatable torque matters. Made from genuine 316 stainless steel with added molybdenum, these screws resist pitting and crevice corrosion even in seawater and chemical‑exposed environments. The sharp metric coarse thread cuts its own path into the base material, eliminating the need for pre‑tapped holes or nuts in most thin‑gauge applications. GooBetter Fastener supplies this M6 screw in a range of lengths to suit your specific assembly thickness.
| Size | Thread Diameter | Available Lengths (mm)* | Head Style | Drive | Material & Grade |
|---|---|---|---|---|---|
| M6 | 6.0 mm | 10 – 50 (see listing) | Button Truss Head | Pozi (PZ2/PZ3) | A4 316 Stainless Steel |
* Lengths are thread length only (head thickness not included). For exact head dimensions (dk, k, etc.), please refer to the detailed dimensional photo in the listing. All screws are fully threaded with metric coarse pitch.
Yes, a Phillips bit will fit and can drive the screw, but for a truly secure, cam‑out‑free engagement, a Pozi bit (PZ2 or PZ3) is strongly recommended. The Pozi recess has extra ribs that give a much better grip at higher torque.
Absolutely. A4 / 316 stainless steel contains molybdenum, which dramatically improves resistance to chlorides and salt spray. It is the standard choice for marine above‑ and below‑waterline fasteners, chemical processing equipment, and coastal structures. These screws will hold up even in the harshest environments.
In thin sheet metal (up to about 1.5 mm), you can often drive them directly. For thicker steel or hard materials, a pilot hole roughly 80% of the thread diameter (about 4.8 mm for M6) makes driving easier and ensures the cleanest thread engagement.
316 stainless is essentially non‑magnetic, even after cold working. They are safe for use near sensitive electronics, navigation equipment, and MRI installations where magnetism must be avoided.
