S-90841A200 1/4"-20 x 3/4" ASME B18.3 High-Vacuum Cleaned-and-Bagged Vented Socket Head Screws
High-Vacuum Cleaned-and-Bagged Vented Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Exceptional tensile strength of 70,000 psi ensures reliable performance under high-stress conditions
- High-vacuum compatibility with vented design prevents outgassing in critical vacuum applications
- Precision Class 3A threads deliver superior fit and vibration resistance in demanding assemblies
- Optimized hex drive engagement provides maximum torque transmission and reduces tool slippage
- Enhanced durability with Rockwell B70 hardness for extended service life in repetitive applications
- Full regulatory compliance meets ASME B18.3 standards and environmental regulations for global acceptance
Professional Applications & Engineering Value
Engineered for demanding industrial environments, this 18-8 Stainless Steel Socket Head Cap Screw delivers critical performance advantages in high-vacuum systems, precision machinery, and corrosive applications. The Class 3A UNC coarse threads provide superior engagement and vibration resistance, while the vented design with 0.063" diameter effectively prevents gas entrapment in vacuum chambers. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures reliable fastening in high-stress assemblies, making it ideal for semiconductor equipment, aerospace components, and medical devices where precision and reliability are paramount. The hex socket drive allows for high-torque installation in confined spaces, enhancing assembly efficiency.
Specification Summary & Compliance
This 1/4"-20 UNC Socket Head Cap Screw features Class 3A thread fit precision with coarse thread spacing and right-hand threading. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications.
