S-97646A333 M8 x 30 mm 18-8 Stainless Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
• Enhanced vibration resistance due to the serrated locking flange, preventing loosening under dynamic loads
• High tensile strength of 100,000 psi ensures reliable performance in demanding mechanical applications
• Excellent durability provided by Rockwell B100 hardness, maintaining thread integrity and head shape
• Easy installation and removal with a standard external hex drive and flanged design that eliminates the need for a separate washer
• Precise thread fit (Class 6g) for smooth assembly and secure fastening in metric coarse thread applications
• Full regulatory compliance with RoHS 3 and REACH, making them safe for use in regulated industrial sectors

Professional Applications & Engineering Value

This M8 flanged hex head screw is engineered to address common industrial challenges like joint failure from vibration and corrosion. The 18-8 Stainless Steel material provides excellent resistance to rust and chemicals, making it suitable for outdoor equipment, marine hardware, and food processing machinery. The serrated locking flange bites into surfaces to maintain clamp load, effectively resisting loosening in high-vibration environments such as automotive assemblies, machinery frames, and electrical enclosures. Its fully threaded metric coarse thread design ensures maximum grip and load distribution, while the external hex drive allows for high-torque installation with common tools. This combination delivers reliable, long-term fastening solutions for industrial hex screw applications where safety and durability are critical.

Specification Summary & Compliance

This screw features an M8 x 1.25 mm metric coarse thread with a Class 6g thread fit for precise dimensional accuracy according to standard metric specifications. It is fully threaded, with a length of 30 mm, flange diameter of 18 mm, and external hex head (13 mm width, 8.1 mm height). Manufactured from 18-8 Stainless Steel with a hardness of Rockwell B100 and tensile strength of 100,000 psi. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.