S-97646A314 1/4"-28 x 3/4" 18-8 Stainless Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional vibration resistance through serrated locking flange design that prevents loosening under dynamic loads
• High tensile strength performance rated at 100,000 psi for demanding mechanical applications
• Precise thread engagement with Class 2A UNF fine threads ensuring reliable fastening in critical assemblies
• Enhanced installation efficiency featuring external hex drive for secure tool engagement and torque application
• Wide load distribution from integrated flange design that reduces surface pressure and material stress
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 1/4"-28 UNF hex head screws deliver exceptional performance in machinery, equipment manufacturing, and structural assemblies. The 18-8 stainless steel construction provides excellent corrosion resistance while maintaining Rockwell B100 hardness for durability. The serrated locking flange addresses common vibration-induced loosening issues in dynamic systems, ensuring maintained clamp load in transportation equipment, power transmission systems, and automated machinery. The fully threaded design with UNF fine threads offers superior holding power in thin materials and precision assemblies, while the external hex drive facilitates efficient installation in confined spaces. These flanged hex screws are particularly valuable in applications requiring both vibration resistance and corrosion protection without compromising mechanical strength.

Specification Summary & Compliance

This 1/4"-28 UNF hex head screw features precision Class 2A thread fit with right-hand thread direction and fine thread spacing. Manufactured from 18-8 stainless steel with Rockwell B100 hardness and 100,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting international standards for industrial fastener applications. Dimensions include 3/4" length, 3/8" head width, and 9/16" flange diameter for consistent performance across manufacturing and assembly operations.