As a China-based Manufacturer, I understand what B2B buyers need: reliable fasteners, traceable quality, and steady supply. When you browse sems torx m4 screws, you’re looking for corrosion resistance, precise drive, and compatible dimensions for electronics, machinery, or automotive assemblies. I offer SEMS Torx M4 screws made from high-grade stainless steel or alloy steel, heat-treated for strength, with a built-in washer under head. The Torx drive reduces cam-out, improves torque transfer, and ensures long service life. Our production follows ISO 9001 and RoHS, with full packing options and CFR/courier terms for China and global shipments. I stock standard sizes and can customize finishes, coatings, and packaging to match your assembly line. If you are seeking a dependable partner in China, I can provide competitive pricing, quick lead times, and documentation for procurement teams. Let me know your quantity and delivery need, and I’ll tailor the offer for your project.
SEMS Torx M4 screws are compact, high‑precision fasteners for electronics, automotive, and consumer devices where space is tight. The Torx drive yields higher torque with less cam-out than Phillips or hex, enabling fast, reliable assembly in automated lines. A built‑in washer and corrosion‑resistant shank make them suitable for vibration-prone applications. Available in stainless steel and zinc‑plated steel, they come in multiple lengths to match required thread engagement. As a leading fastener producer, a capable supplier supports global procurement with scalable production, strict QA, and traceability. Automated inspection, tight tolerances, and RoHS/REACH compliance align with international standards. Flexible MOQs, bulk packaging, and dependable logistics ensure steady supply and predictable lead times, even in volatile markets. Whether you need standard SKUs or customized coatings, drilling, or unique lengths, an export-ready partner can deliver consistent quality, competitive pricing, and resilient global delivery.
| Item | Drive Type | Head Type | Thread Size | Length (mm) | Material | Finish | Tensile Strength (MPa) | Hardness (HRC) | Application | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| S1 | Torx | Pan head | M4 | 6 | A2-70 Stainless Steel | Zinc Plated | 520-700 | 18-28 | Electronics enclosure | General purpose hardware |
| S2 | Torx | Button head | M4 | 8 | A2-70 Stainless Steel | Passivated | 520-700 | 20-28 | Consumer electronics | Low-profile assemblies |
| S3 | Torx | Countersunk | M4 | 10 | A2-70 Stainless Steel | Zinc Plated | 540-700 | 22-30 | PCB mounting | Flush-fit head |
| S4 | Torx | Pan head | M4 | 12 | A4-80 (316) Stainless | Nickel Plated | 520-730 | 23-30 | Marine electronics | Corrosion resistant |
| S5 | Torx | Pan head | M4 | 16 | A2-70 Stainless Steel | Black Oxide | 520-700 | 17-27 | Automotive interior | Moisture resistant |
| S6 | Torx | Truss head | M4 | 20 | A2-70 Stainless Steel | Zinc Plated | 520-700 | 18-27 | General machinery | Load distribution |
| S7 | Torx | Button head | M4 | 25 | A2-70 Stainless Steel | Nickel Plated | 520-700 | 20-28 | Outdoor enclosure | Weather resistant |