S-92820A735 M16 x 40 mm High-Strength Metric Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments.
• Secure anti-loosening performance due to serrated locking under the flange, maintaining clamp load in high-vibration applications.
• High tensile strength of 130,000 psi ensures reliable fastening under heavy loads and mechanical stress.
• Precise Class 6g thread fit for smooth assembly and consistent engagement, reducing the risk of cross-threading.
• Integrated flange design distributes pressure evenly, eliminating the need for a separate washer and speeding up installation.
• External hex drive allows for high torque application with standard tools, facilitating quick and secure tightening.
• Full threading along the 40mm length provides maximum grip and adjustability in a variety of material thicknesses.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these M16 hex head flange screws in black-oxide steel address critical challenges in machinery assembly, automotive frames, and structural steelwork. The fully threaded design with coarse pitch (2mm) ensures rapid installation and robust holding power in thick materials or soft substrates. The serrated locking feature prevents spontaneous loosening caused by vibrations, a common failure point in dynamic equipment. With a 31mm flange diameter, the screw acts as an integrated washer, reducing point stress and protecting sensitive surfaces. This combination of high tensile strength (130,000 psi) and Rockwell C27 hardness makes it ideal for heavy-duty applications where reliability and durability are non-negotiable.

Specification Summary & Compliance

This screw adheres to metric coarse thread standards with a precise Class 6g thread fit, ensuring dimensional accuracy and interchangeability. It is manufactured to meet rigorous industrial specifications, including full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global markets and environmentally conscious procurement. The product is free from restricted substances as per the latest SVHC list, providing assurance for safe and sustainable use in various engineering projects.