S-94302A105 1/4"-20 x 1 1/2" Super-Corrosion-Resistant 316 Stainless Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extending service life
• Vibration-resistant locking provided by the serrated flange, preventing loosening under dynamic loads for reliable assemblies
• High mechanical strength delivering 100,000 psi tensile strength and Rockwell B100 hardness for demanding industrial applications
• Secure and efficient installation enabled by the external hex drive and coarse UNC threads for quick assembly with standard tools
• Optimized load distribution from the 9/16" flange diameter, reducing surface pressure and material stress
• Reliable thread engagement with Class 2A fit and partial threading, ensuring precise fastening and reducing galling risk
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe, sustainable use in regulated industries

Professional Applications & Engineering Value

This 1/4"-20 UNC Hex Head Screw in 316 Stainless Steel is engineered to solve critical challenges in corrosive and high-vibration settings. The serrated locking flange eliminates the need for separate washers or locknuts, providing permanent resistance to rotational loosening in machinery, structural frames, and transportation equipment. Its coarse thread design ensures rapid installation and reliable performance in materials prone to stripping. The partially threaded shank offers concentrated clamping force where needed, while the external hex drive accommodates high-torque applications. Ideal for chemical processing, marine, and outdoor infrastructure, this fastener combines corrosion resistance with high tensile strength to reduce maintenance frequency and enhance assembly integrity.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with Class 2A fit for consistent dimensional accuracy. It is partially threaded with a minimum thread length of 3/4" and overall length of 1-1/2". Manufactured from 316 Stainless Steel with a flange diameter of 9/16", it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international safety and sustainability standards.