Premium self-tapping screws phillips and countersunk head screws crafted from 304 stainless steel or carton steel. Sharp thread design for easy installation in metal/wood; corrosion-resistant. Sizes from M3 to M12
| Model no. | LS-SC14 |
| Material | carbon steel, stainless steel, Alumium Alloy, |
| Screw Type | Countersunk head |
| Drive type | Phillips Drive |
| Length Range | 6mm-120mm or customized |
| Thread Type | Self-tapping thread (Metric or imperial) |
| Finish | Plain(mill finish), Passivated zinc-plated(for carbon steel) |
| Corrosion Resistance | 304SS: Good resistance to atmospheric corrosion, fresh water, mild chemicals
316SS:Superior resistance to saltwater, harsh chemicals |
| Tensile strength | 304SS:550N/mm2(min) 8.8Grade carbon steel:800 N/mm2(min) |
Truss Head stainless steel self-tapping screws 4*30 fastener
Self tapping screws 304 stainless steel fasteners, Truss head screw for machinery
Key Keywords Embedded: M6 M8 M10 M12 hex head wood screws, stainless steel lag screw dimensions, DIN 571 lag bolts
3. Benefits of 304 Stainless Steel Lag Screws
304 stainless steel hex head lag screws outperform carbon steel and zinc-plated fasteners in outdoor and structural applications, with these core advantages:
1. Superior Corrosion Resistance: 304 stainless steel contains 18% chromium and 8% nickel, forming a protective oxide layer that resists rust, saltwater, and UV damage—perfect for coastal, marine, or humid environments (unlike zinc-plated screws that corrode within 1–2 years outdoors).
2. High Tensile Strength: Rated at A2-70, these lag screws have a minimum tensile strength of 700 MPa and yield strength of 450 MPa, supporting heavy loads (up to 2,000 lbs per screw in dense wood) for deck joists, fence posts, and roof trusses.
3. Wrench-Driven Installation: The hexagonal head allows for torque application with a socket wrench or spanner, creating a tighter fit than Phillips/slotted head wood screws—reducing the risk of stripping or loosening over time.
4. Splinter-Free Wood Engagement: The sharp, tapered point and coarse threads pull the screw into wood smoothly, minimizing splintering (critical for hardwoods like oak and maple) and ensuring a flush, secure connection.
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