S-90585A977 3/4"-10 x 4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh environments and extended service life
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high-stress conditions
• Precise, secure fastening ensured by Class 3A thread fit and UNC coarse thread profile, reducing the risk of cross-threading and loosening
• Efficient installation and removal with a 1/2" hex drive and standard flat head profile, allowing for high torque application and flush mounting
• Full-length threading provides consistent grip and load distribution along the entire 4" length for maximum holding power
• Compliance with industry standards including ASME B18.3, ensuring dimensional accuracy and interchangeability in professional applications
• Environmental and regulatory safety with RoHS 3 and REACH compliance, making them suitable for regulated industries and global supply chains

Professional Applications & Engineering Value

These 3/4"-10 UNC flat head screws are engineered to address critical challenges in heavy-duty industrial applications where corrosion resistance and structural integrity are paramount. Constructed from 316 stainless steel with a passivated finish, they excel in aggressive environments such as chemical processing, marine hardware, and food processing equipment, preventing rust and degradation. The Class 3A thread fit and coarse UNC threading ensure rapid assembly and vibration resistance, reducing maintenance downtime. The combination of 70,000 psi tensile strength and a hex drive design allows for secure fastening in high-load scenarios, from machinery frames to structural supports, delivering long-term reliability and cost efficiency.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including a Class 3A thread fit for superior thread engagement and a head diameter tolerance of -0.083" to 0". It conforms to ASME B18.3 specifications for flat head screw design and threading standards. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring the absence of hazardous substances and supporting use in environmentally conscious industries.