S-93395A403 M8 x 18 mm DIN 7991 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and passivated finish for extended service life in harsh environments
• Precise flush mounting with standard 90° countersink angle and flat head design for seamless surface integration
• High-strength performance delivering 70,000 psi tensile strength for reliable load-bearing applications
• Secure hex drive engagement with 5mm drive size preventing tool slippage during installation
• Optimized thread engagement through Class 6g tolerance coarse threading (M8 x 1.25mm) ensuring vibration resistance
• Full-length threading providing maximum grip along the entire 18mm shaft length
• Regulatory compliance meeting DIN 7991 specifications with RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

These M8 flat head screws engineered from 316 Stainless Steel deliver critical corrosion resistance for industrial applications exposed to chemicals, moisture, and extreme temperatures. The passivated finish enhances surface durability while the hex drive design ensures secure torque transmission during assembly. With coarse threading (1.25mm pitch) and Class 6g tolerance, these fasteners provide reliable performance in vibration-prone environments while the 90° countersink angle enables flush mounting in precision machinery, marine equipment, and chemical processing systems where surface integrity and material compatibility are paramount.

Specification Summary & Compliance

Manufactured to DIN 7991 standards with Metric M8 x 1.25mm coarse threads and Class 6g thread fit tolerance. Features include 16mm head diameter (±0-1.92mm tolerance), 4.4mm head height, and 18mm fully threaded length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.