S-91239A521 M10 x 40 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 10.9 strength grade, providing reliable performance under high-stress conditions
• Superior corrosion resistance thanks to the black-oxide coating on alloy steel, extending service life in harsh environments
• Optimized fastening efficiency with fully threaded M10 x 1.5mm coarse pitch design for quick installation and secure holding power
• Easy installation and removal with 6mm hex drive and rounded button head design, reducing tool slippage and assembly time
• Precision thread fit with Class 6g tolerance ensuring consistent engagement and vibration resistance in industrial applications
• High tensile strength of 140,000 psi combined with Rockwell C32 hardness for dependable performance in heavy-duty applications
• Broad compatibility with standard metric components and tooling, streamlining inventory and maintenance processes

Professional Applications & Engineering Value

These M10 hex screws with Class 10.9 strength rating and black-oxide alloy steel construction address critical engineering challenges in demanding industrial environments. The combination of 140,000 psi tensile strength and Rockwell C32 hardness ensures reliable performance in heavy machinery, automotive assemblies, and structural applications where vibration resistance and load-bearing capacity are paramount. The fully threaded metric coarse pitch design (M10 x 1.5mm) provides superior grip and prevents loosening under dynamic loads, while the rounded head profile with 6mm hex drive enables efficient installation in confined spaces. The black-oxide surface treatment offers enhanced corrosion protection, making these industrial screws ideal for outdoor equipment, manufacturing fixtures, and assembly lines exposed to moisture and chemicals.

Specification Summary & Compliance

Manufactured to exacting ISO 7380 standards with Class 6g thread fit tolerance for precision engagement. The metric coarse thread (M10 x 1.5mm) follows international threading specifications, while the right-hand thread direction ensures compatibility with standard assembly practices. These fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. The Class 10.9 strength grade certification guarantees consistent mechanical properties across production batches for reliable performance in critical applications.