S-90042A461 M4 x 40 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with Viton® fluoroelastomer O-rings that maintain integrity in extreme temperatures from -20° to 400° F and pressures up to 1500 psi
• Exceptional corrosion resistance provided by 18-8 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Precise thread engagement with Class 6g thread fit ensuring reliable fastening and vibration resistance in critical applications
• High strength durability featuring 100,000 psi tensile strength and Rockwell B85 hardness for long-lasting performance under heavy loads
• Optimized drive efficiency with standard hex socket design and 3mm drive size for secure tool engagement and reduced cam-out risk
• Versatile partial threading allowing for both secure clamping and adjustment flexibility in various assembly configurations
• Broad compatibility with maximum hole diameter of 4.546 mm, making these screws suitable for diverse industrial equipment and machinery

Professional Applications & Engineering Value

These M4 socket head cap screws deliver critical engineering solutions for demanding industrial applications where fluid sealing and pressure containment are paramount. The combination of 18-8 stainless steel material and Viton® fluoroelastomer O-rings addresses common failure points in hydraulic systems, pneumatic equipment, and processing machinery exposed to aggressive chemicals and temperature extremes. The metric coarse thread (M4 x 0.7mm) with Class 6g thread fit ensures precise engagement while the partially threaded design provides optimal clamping force distribution. These hex socket screws are engineered to prevent leakage in high-pressure environments up to 1500 psi, making them ideal for valve assemblies, pump connections, and industrial machinery requiring reliable sealing performance.

Specification Summary & Compliance

These socket head cap screws feature precise Class 6g thread fit according to metric standards with M4 x 0.7mm coarse thread specification. Manufacturing complies with ASME B18.3, DIN 912, and ISO 4762 standards for dimensional accuracy and performance reliability. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.