I supply {carbon steel sems screw} solutions for high-volume fastening in manufacturing and construction. Built from sturdy carbon steel and finished with zinc or black oxide, these screws deliver reliable grip and easy drive in a range of environments. I stock multiple head styles, thread pitches, and lengths to fit your assembly line, with standard ASTM specs and consistent torque values. Our team keeps a tight eye on quality and batch traceability, so you get predictable performance every time. Check our Pricelist for cheap options without sacrificing strength, and I can tailor a package to your exact quantity—whether you need a small run or thousands of pieces. Lead times are short, packaging is customizable, and QC documentation is available on request. If you want samples or a formal quote, I’ll respond quickly and help you compare options on cost, delivery, and compliance.
Carbon steel SEMS screws offer an ahead‑of‑the‑curve fastening: one integrated screw and washer for rapid, reliable installation with consistent torque. Affordable carbon steel, when coated properly, suits electronics, appliances, and automotive interiors, and works with common threads on automated lines. This design reduces parts, speeds assembly, and supports high‑volume production with predictable performance. For global buyers, key considerations are material quality, coating, and traceability. Seek standards (DIN/ISO/ANSI), controlled hardness, and corrosion protection. Ensure proper thread engagement, head and washer fit, and vibration resistance. Plan for steady supply, scalable MOQs, RoHS compliance, and transparent QA data. Choose partners who can tailor lengths, coatings, and packaging to regional specs while keeping lead times.
| Grade | Carbon Content (%) | Manganese (%) | Diameter Range (mm) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC) | Standard | Coating | Region of Production | Typical Application |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1018 | 0.15 | 0.70 | 2-8 | 430 | 270 | 18 | 28 | ASTM A29 | Zinc-Plated | North America | General fasteners for automotive and construction |
| 1020 | 0.21 | 0.75 | 2-12 | 520 | 320 | 16 | 30 | ASTM A29 | Zinc | Asia | Machinery components |
| 1035 | 0.35 | 0.70 | 3-12 | 640 | 420 | 15 | 32 | ASTM A29 | HDG | Europe | Structural framing fasteners |
| 1045 | 0.48 | 0.80 | 3-14 | 700 | 520 | 12 | 34 | SAE J403 / ASTM A29 | HDG | Asia | Heavy-duty fastening |
| 12L14 | 0.18 | 0.70 | 2-8 | 480 | 270 | 12 | 28 | ASTM A29 | Zinc | North America | Free-cutting fasteners for electronics assemblies |
| 1008 | 0.12 | 0.25 | 2-6 | 420 | 270 | 22 | 25 | ASTM A29 | Uncoated | Europe | Precision SEMS screws for electronics |