S-90042A292 M8 x 40 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws
Sealing Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior sealing performance with integrated Buna-N rubber O-ring rated for pressures up to 1500 psi and temperatures from -40° to 225° F
- Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
- High tensile strength of 100,000 psi ensures reliable fastening under demanding mechanical loads
- Precision Class 6g thread fit guarantees consistent engagement and vibration resistance in metric coarse thread applications
- Partially threaded design provides optimal grip strength while preventing thread damage during installation
- Standard hex socket drive allows for high torque application with common 6mm hex keys
- Rockwell B85 hardness delivers excellent durability and wear resistance for extended service life
Professional Applications & Engineering Value
These M8 socket head cap screws with Buna-N rubber O-rings solve critical sealing challenges in industrial applications where fluid containment and pressure resistance are paramount. The 18-8 stainless steel construction provides inherent corrosion resistance, making these metric coarse thread fasteners ideal for machinery, hydraulic systems, and processing equipment exposed to moisture, chemicals, or outdoor conditions. The partially threaded configuration ensures maximum clamping force while the Class 6g thread fit maintains precise alignment in high-vibration environments. With their hex socket drive design, these screws accommodate high torque requirements in confined spaces, delivering reliable performance in automotive, manufacturing, and fluid handling systems where leak prevention is critical.
Specification Summary & Compliance
This M8 x 1.25mm x 40mm socket head cap screw features Class 6g thread tolerance with metric coarse threading and partial threading up to 24mm. Manufacturing specifications comply with ASME B18.3, DIN 912, and ISO 4762 standards. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental and safety regulations for industrial components.
