S-92800A255 1/2"-20 x 4 1/4" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 PSI ensures reliable performance under heavy loads and stress
• Precise Class 2A thread fit guarantees smooth assembly and secure fastening in critical applications
• External hex drive with 3/4" head width provides excellent torque transmission and easy installation
• Fine UNF thread design offers enhanced vibration resistance and improved clamping force
• Partial threading allows for optimized grip length and reduced material usage without compromising strength
• Full compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 18-8 stainless steel hex head screws deliver exceptional durability where corrosion resistance and mechanical strength are paramount. The 1/2"-20 UNF fine thread configuration provides superior holding power in vibration-prone equipment, while the external hex drive enables high-torque installation in confined spaces. With an 80,000 PSI tensile strength and Rockwell B70 hardness, these partially threaded fasteners maintain integrity in structural assemblies, machinery frames, and heavy-duty manufacturing applications where reliability cannot be compromised.

Specification Summary & Compliance

This 4 1/4" length hex head screw features precise Class 2A thread fit per UNF standards with 1 1/4" minimum thread length. Manufactured from 18-8 stainless steel with Rockwell B70 hardness, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for industrial use worldwide.