From my workshop to your procurement desk, I offer the 18-8 screw black oxide 18-8 socket head designed for reliable performance in harsh environments. As a China-based Manufacturer, I understand how a dependable fastener can cut downtime and extend equipment life. The 18-8 screw black oxide 18-8 socket head is made from 18-8 stainless steel, delivering corrosion resistance with a premium black oxide finish for reduced glare and added protection. I provide standard imperial and metric sizes, tight tolerances, and options for length, thread pitch, and head style to fit your application. You can expect fast lead times, consistent quality, and scalable supply for bulk orders. I can supply documentation, certification, and magnetism testing if needed. If you’re sourcing from a China Manufacturer, I’m here to help you streamline purchasing with a single trusted partner, competitive pricing, and dependable delivery.
Engineered for high-demand OEM applications, 18-8 stainless steel socket head cap screws with a black oxide finish deliver unmatched quality. The 18-8 grade (304/304L) offers excellent corrosion resistance and formability, ideal for electronics, automotive, and machinery assemblies. The black oxide provides a discreet, low-glare appearance and improves lubricity for smoother assembly and precise engagement in tight tolerances. Global buyers rely on a steady supply chain and consistent performance across diverse environments. These screws can be supplied in a range of lengths, thread pitches, head sizes, and optional finishes to meet specific OEM needs, with tight tolerances and high-quality surfaces. Through rigorous QA, material traceability, and compliance with international standards, manufacturers gain reliable prototypes to production, with predictable lead times and scalable volumes for electronics, transportation, and industrial equipment.
| Product Code | Nominal Size | Length (mm) | Thread Pitch (mm) | Finish | Head Diameter (mm) | Head Height (mm) | Material | Tensile Strength (MPa) | Hardness (HRB) | Standard | Applications |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S-SS304-BO-M3x6 | M3 | 6 | 0.50 | Black Oxide | 5.0 | 3.2 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | General mechanical assembly; electronics enclosures |
| S-SS304-BO-M3x8 | M3 | 8 | 0.50 | Black Oxide | 5.0 | 3.2 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | General mechanical assembly; electronics enclosures |
| S-SS304-BO-M4x8 | M4 | 8 | 0.70 | Black Oxide | 6.0 | 3.3 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | Industrial machinery assemblies; automotive components |
| S-SS304-BO-M4x12 | M4 | 12 | 0.70 | Black Oxide | 6.0 | 3.3 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | General machinery; consumer electronics housings |
| S-SS304-BO-M5x10 | M5 | 10 | 0.80 | Black Oxide | 7.0 | 3.5 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | Robotics and automation equipment |
| S-SS304-BO-M6x12 | M6 | 12 | 1.00 | Black Oxide | 8.0 | 4.0 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | Industrial equipment; mechanical assemblies |
| S-SS304-BO-M8x16 | M8 | 16 | 1.25 | Black Oxide | 11.0 | 4.0 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | Electrical enclosures; machine frames |
| S-SS304-BO-M10x20 | M10 | 20 | 1.50 | Black Oxide | 14.0 | 4.5 | 304 Stainless Steel (18-8) | 520 | 90 | ISO 4762 / DIN 912 | Heavy equipment, automotive assemblies |