S-91294A564 M20 x 140 mm DIN 7991 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional Durability: Made from black-oxide alloy steel with Rockwell C32 hardness for superior wear resistance and long service life in demanding environments.
• High Tensile Strength: Class 10.9 rating and 120,000 psi tensile strength ensure reliable performance under heavy loads and high-stress applications.
• Superior Corrosion Resistance: Black-oxide surface treatment provides enhanced protection against rust and oxidation, extending fastener lifespan.
• Precision Thread Fit: Class 6g thread fit with coarse M20x2.5mm threading ensures secure, vibration-resistant connections and easy installation.
• Optimized Head Design: Standard flat head with 90° countersink angle and 12mm hex drive allows for flush mounting and high-torque application without slippage.
• Full Thread Engagement: Fully threaded 140mm length provides maximum grip and load distribution across the entire fastener.
• Regulatory Compliance: Meets DIN 7991 specifications and is RoHS 3 & REACH compliant for safe use in regulated industrial sectors.

Professional Applications & Engineering Value

This M20 flat head screw is engineered to address critical challenges in heavy machinery, structural steelwork, and industrial equipment assembly. The black-oxide alloy steel construction combats corrosion in humid or outdoor settings, while the Class 10.9 strength grade prevents failure under dynamic loads. The fully threaded metric design with coarse 2.5mm pitch ensures rapid installation and superior clamping force in thick materials. Its flat head profile with 90° countersink angle sits flush with surfaces, eliminating protrusions in conveyor systems or framework. Ideal for high tensile strength requirements in construction, automotive, and manufacturing, this DIN 7991 compliant fastener delivers reliability where safety and precision are non-negotiable.

Specification Summary & Compliance

This fastener maintains precise Class 6g thread fit per ISO metric standards, with a coarse thread spacing of M20x2.5mm and fully threaded 140mm length. Manufacturing adheres to DIN 7991 specifications for dimensional accuracy and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial use.