S-92125A531 M20 x 40 mm DIN 7991, ISO 10642 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• High-torque installation capability through 12mm hex drive design that prevents stripping and ensures secure fastening
• Exceptional mechanical strength with 70,000 psi tensile strength for demanding industrial applications
• Reliable thread engagement with Class 6g thread fit and coarse 2.5mm pitch for quick assembly and vibration resistance
• Flush mounting design with standard flat head profile that sits perfectly countersunk for smooth surface finishes
• Full thread coverage along the entire 40mm length provides maximum holding power and load distribution
• Regulatory compliance assurance meeting DIN 7991/ISO 10642 standards plus RoHS 3 and REACH environmental directives

Professional Applications & Engineering Value

These M20 metric flat head screws deliver critical performance advantages in industrial settings where corrosion resistance and structural integrity are paramount. The combination of 18-8 stainless steel material with passivated finish creates a robust barrier against chemical exposure and atmospheric corrosion, significantly extending maintenance intervals in manufacturing equipment, marine hardware, and food processing machinery. The fully threaded design with coarse 2.5mm pitch ensures rapid installation while maintaining Class 6g thread fit precision for vibration-resistant connections. The 12mm hex drive accommodates high torque applications without cam-out, making these flat head hex screws ideal for heavy-duty fastening in structural frameworks, machinery assembly, and transportation equipment where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to precise DIN 7991/ISO 10642 standards, these metric screws maintain Class 6g thread fit tolerances for consistent performance. The M20 x 2.5mm coarse thread configuration with 40mm length and 36mm head diameter ensures dimensional accuracy across production batches. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility, while the 90° countersink angle provides proper seating in standard chamfered holes. The fully threaded construction with right-hand thread direction follows international metric fastener conventions for universal compatibility.