S-90128A204 M3 x 20 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Maximum Load-Bearing Capacity: Class 12.9 strength rating and 170,000 psi tensile strength ensure reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior Corrosion Resistance: Zinc-plated alloy steel construction provides excellent protection against rust and environmental degradation, extending service life in demanding conditions.
• Precision Hex Drive Engagement: 2.5 mm hex socket drive allows for high torque application and secure installation, minimizing stripping and ensuring consistent clamping force.
• Optimized Thread Design: Partially threaded M3 x 0.5 mm coarse thread configuration with 18 mm thread length offers superior grip and vibration resistance in assembled components.
• Enhanced Durability: Rockwell C37 hardness rating maintains structural integrity under repeated loads, ideal for machinery and equipment requiring long-term reliability.
• Global Standard Compliance: Manufactured to DIN 912/ISO 4762 specifications ensures dimensional accuracy and interchangeability with international component designs.
• Environmental Responsibility: RoHS 3 and REACH compliance guarantees safe use in regulated industries while meeting sustainability requirements.

Professional Applications & Engineering Value

Engineered for high-performance industrial applications, these Class 12.9 socket head cap screws solve critical fastening challenges in machinery, automotive assemblies, and precision equipment. The zinc-plated alloy steel construction combats corrosion in harsh environments, while the M3 metric coarse thread with partial threading provides optimal stress distribution and prevents loosening under vibration. The hex socket drive enables flush installation in confined spaces, making these DIN 912/ISO 4762 compliant fasteners ideal for applications requiring both high tensile strength and compact design. Their 18 mm thread engagement ensures secure connections in metal-to-metal assemblies where reliability is paramount.

Specification Summary & Compliance

This socket head cap screw features precise M3 x 0.5 mm coarse threads with Class 5g6g thread fit tolerance per ISO standards, ensuring consistent engagement. Manufacturing conforms to DIN 912/ISO 4762 dimensional specifications for metric socket head screws. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming restriction of hazardous substances for industrial use.