S-91255A810 5/8"-11 x 1 3/4" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments
• Superior tensile strength (120,000 psi) ensures reliable performance in heavy-duty applications
• Precise Class 3A thread fit provides secure, vibration-resistant connections
• 3/8" hex drive design allows for high-torque installation with standard tools
• Full threading along 1 3/4" length enables maximum adjustability and grip depth
• Rockwell C37 hardness rating guarantees long-term durability and wear resistance
• Compliance with major industry standards including ASME B18.3 and ASTM F835 for guaranteed quality

Professional Applications & Engineering Value

These 5/8"-11 UNC rounded head screws deliver critical performance advantages in demanding industrial settings. The black-oxide alloy steel construction provides superior corrosion protection, making them ideal for machinery, structural assemblies, and outdoor equipment where environmental exposure is a concern. The coarse UNC thread pattern combined with Class 3A precision threading ensures rapid installation and exceptional resistance to vibration loosening. The button-style rounded head with 3/8" hex drive offers both aesthetic appeal and practical torque transmission capabilities, while the fully threaded design maximizes connection integrity across various material thicknesses.

Specification Summary & Compliance

Manufactured to exacting inch system measurements with Class 3A thread fit tolerances per UNC standards. These screws conform to ASME B18.3 dimensional specifications and ASTM F835 mechanical requirements. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.