S-92185A127 4-40 x 1 3/8" Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and passivated finish, ideal for harsh environments including marine and chemical applications.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high-stress conditions.
• Precise thread engagement with Class 3A thread fit ensures tighter tolerances and secure fastening in critical assemblies.
• Optimized drive efficiency featuring a 3/32" hex drive and standard socket head profile for easy installation with standard tools and reduced stripping risk.
• Versatile partial threading with a minimum 3/4" thread length allows for adjustable clamping force and secure positioning in various materials.
• Compliance with global standards including RoHS 3 and REACH, ensuring environmental safety and regulatory acceptance in international markets.
• Durable coarse UNC threading provides faster assembly and better performance in materials prone to debris or vibration.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 316 Stainless Steel Socket Head Cap Screws deliver outstanding corrosion resistance and structural integrity. The passivated finish enhances surface durability, preventing oxidation in humid or chemically aggressive environments like marine equipment, food processing machinery, and pharmaceutical installations. With a Class 3A thread fit and coarse UNC threading, these screws ensure rapid, secure fastening even in high-vibration applications, reducing the risk of loosening. The partially threaded design and 3/32" hex drive facilitate precise torque application, making them ideal for compact assemblies where space is limited and reliability is paramount. These features collectively address common engineering challenges such as material degradation, assembly speed, and long-term fastener performance.

Specification Summary & Compliance

This Socket Head Cap Screw adheres to precise dimensional standards, including UNC thread type with Class 3A thread fit for high accuracy. The screw is manufactured with a right-hand thread direction, coarse thread spacing, and a minimum thread length of 3/4". It fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.