S-91223A333 1/4"-20 x 1/4" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 Stainless Steel construction, ideal for chemical, marine, and outdoor applications.
• Exceptional mechanical strength and durability with a 70,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable performance under high-stress conditions.
• Space-saving ultra-low profile head design allows for installation in tight or recessed spaces where standard socket heads cannot fit.
• Precise and secure fastening with a Class 2A thread fit and 1/4"-20 UNC coarse threads, providing excellent engagement and vibration resistance.
• Easy installation and removal using a standard 1/8" hex key drive, reducing assembly time and tool wear.
• Full thread coverage along the entire 1/4" length ensures maximum grip and adjustability in various material thicknesses.
• Compliance with global safety standards including RoHS 3 and REACH, making it suitable for regulated industries and export markets.

Professional Applications & Engineering Value

This 316 Stainless Steel Socket Head Cap Screw is engineered to address critical challenges in industrial settings, such as corrosion-induced failure and space limitations. The ultra-low profile head minimizes protrusion, making it perfect for compact machinery, precision instruments, and automotive assemblies where clearance is restricted. Its coarse UNC threads and Class 2A fit provide rapid installation and robust holding power, reducing the risk of loosening in high-vibration environments like manufacturing equipment or transportation systems. Combined with the material's inherent resistance to chlorides and acids, this fastener extends service life in demanding sectors including chemical processing, marine engineering, and food machinery, ensuring operational reliability and reduced maintenance costs.

Specification Summary & Compliance

This socket head cap screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent accuracy and a head diameter tolerance of -0.005" to 0.005". It conforms to UNC coarse thread specifications and is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial applications.