S-90042A239 M3 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 Sealing Performance: Integrated Buna-N rubber O-ring creates reliable fluid and gas seals, preventing leaks in pressurized systems up to 1500 psi.
- Exceptional Corrosion Resistance: 18-8 stainless steel construction provides excellent durability against rust and chemical exposure in harsh industrial environments.
- High Strength & Durability: 100,000 psi tensile strength and Rockwell B85 hardness ensure reliable fastening under heavy loads and vibration.
- Wide Temperature Tolerance: O-ring maintains sealing integrity across extreme temperatures from -40° to 225° F (-40° to 107° C).
- Precision Thread Fit: Class 6g thread tolerance ensures smooth installation and secure mating with compatible nuts and threaded holes.
- Standardized Dimensions: Complies with ASME B18.3, DIN 912, and ISO 4762 specifications for guaranteed interchangeability and engineering consistency.
- Secure Hex Drive: 2.5 mm hex socket drive provides positive torque transmission and reduces stripping risk during installation.
Professional Applications & Engineering Value
These M3 socket head cap screws with integrated Buna-N O-rings solve critical sealing challenges in hydraulic, pneumatic, and fluid handling systems. The 18-8 stainless steel body resists corrosion while the fully threaded M3 x 0.5 mm coarse thread design ensures maximum engagement strength. Engineers specify these sealing screws for applications requiring reliable pressure containment up to 1500 psi, from industrial machinery and processing equipment to automotive components. The combination of metric thread standards and hex socket drive makes them ideal for precision assemblies where space constraints demand compact, high-strength fasteners with integrated sealing functionality.
Specification Summary & Compliance
Thread specifications include M3 x 0.5 mm coarse thread with Class 6g tolerance per ISO metric standards. Manufacturing complies with ASME B18.3, DIN 912, and ISO 4762 dimensional requirements. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. Maximum recommended hole diameter is 3.454 mm for proper sealing performance.
