S-91294A136 M3 x 20 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Durable black-oxide coating on alloy steel provides enhanced corrosion resistance, extending service life in demanding industrial environments.
• Class 10.9 strength grade guarantees high load-bearing capacity and fatigue resistance for critical assembly operations.
• Precision Class 6g thread fit with coarse pitch ensures easy, secure installation and vibration resistance in machinery and equipment.
• 90° countersink angle and flat head design allows for a flush, unobtrusive finish, ideal for applications requiring smooth surfaces.
• Fully threaded M3 x 0.5mm configuration offers maximum grip and uniform clamping force along the entire 20mm length.
• Compliance with DIN 7991/ISO 10642, RoHS 3, and REACH ensures adherence to international quality and environmental standards for global supply chain compatibility.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these M3 flat head screws in black-oxide alloy steel address common challenges like corrosion, vibration loosening, and high mechanical stress. The Class 10.9 strength rating and Rockwell C32 hardness provide superior durability in automotive, machinery, and electronic enclosures, where consistent performance under load is critical. The fully threaded coarse pitch design with Class 6g fit ensures quick assembly and reliable retention, minimizing maintenance needs. With a 90° countersink angle, they deliver a seamless finish in countersunk holes, enhancing both safety and aesthetics in precision engineering applications.

Specification Summary & Compliance

This fastener features a Metric M3 x 0.5mm coarse thread with Class 6g tolerance for precise fit, and a length of 20mm. It conforms to DIN 7991 and ISO 10642 manufacturing standards, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and use in global industrial markets.