S-90696A222 1/2"-13 x 4 1/4" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction for long-lasting performance in harsh environments
• High-strength clamping force with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Precise thread engagement through Class 3A fit and UNC coarse threads ensuring reliable, vibration-resistant connections
• Secure installation and removal with 3/8" hex drive providing maximum torque transfer and reduced stripping risk
• Optimized load distribution from partially threaded design minimizing stress concentration points
• Industry-standard compatibility meeting ASME B18.3 specifications for interchangeability and quality assurance
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these socket head cap screws deliver exceptional reliability in machinery assembly, automotive systems, and structural frameworks. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, while the Class 3A UNC coarse threads enable rapid installation and superior vibration resistance in high-stress environments. The 3/8" hex drive design allows for high-torque applications where space constraints limit wrench clearance, making these partially threaded fasteners ideal for precision equipment requiring controlled clamping force. With Rockwell B70 hardness and 70,000 psi tensile strength, they maintain integrity under extreme mechanical loads, reducing maintenance frequency and downtime in continuous operation settings.

Specification Summary & Compliance

Manufactured to ASME B18.3 standards with Class 3A thread fit ensuring precise dimensional accuracy and interchangeability. Features 1/2"-13 UNC coarse threads in right-hand direction with minimum 1 1/2" thread length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Inch system measurements include 4 1/4" overall length with 3/4" head diameter and 1/2" head height.