S-90042A258 M4 x 20 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws
Sealing Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
- Reliable high-pressure sealing up to 1500 PSI, preventing leaks in critical fluid and gas systems.
- Wide temperature tolerance from -40° to 225°F, ensuring performance stability in varying operational conditions.
- Exceptional mechanical strength with 100,000 PSI tensile strength and Rockwell B85 hardness for durable, long-lasting fastening.
- Easy, secure installation using a standard 3 mm hex key, reducing assembly time and tool slippage.
- Precise thread fit with Class 6g tolerance, providing consistent engagement and vibration resistance.
- Integrated Buna-N O-ring for immediate, effective sealing without additional components.
Professional Applications & Engineering Value
This M4 socket head cap screw is engineered to address common sealing and durability challenges in industrial assemblies. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it suitable for outdoor, marine, or chemical-exposed applications. Combined with the Buna-N rubber O-ring, it creates a robust seal that withstands pressures up to 1500 PSI, preventing fluid or gas leaks in hydraulic systems, pumps, and compressors. The fully threaded design and coarse thread pitch ensure quick installation and high clamp load distribution, while the hex drive allows for tight spaces and torque control. Ideal for machinery, automotive, and equipment manufacturing, this screw reduces maintenance needs and enhances operational reliability.
Specification Summary & Compliance
This fastener features a Class 6g thread fit per ISO metric standards, ensuring dimensional accuracy and interchangeability. It conforms to ASME B18.3, DIN 912, and ISO 4762 specifications for socket head cap screws, guaranteeing consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.
