S-91355A163 6-32 x 5/8" Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability with black-oxide alloy steel construction providing superior corrosion resistance and extended service life in harsh environments
• Maximum load-bearing capacity achieved through 120,000 PSI tensile strength and Rockwell C32 hardness for reliable performance under heavy stress
• Precise thread engagement with Class 3A fit UNC coarse threads ensuring secure fastening and vibration resistance in industrial applications
• Efficient installation through 5/64" hex drive design allowing quick assembly with standard tools while preventing cam-out
• Enhanced stability from integrated flange design distributing load evenly and eliminating the need for separate washers
• Full-threaded coverage along the 5/8" length providing consistent clamping force and superior holding power
• Regulatory compliance meeting RoHS 3 and REACH standards for safe use across various industrial sectors

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 6-32 UNC threaded rounded head screws deliver exceptional performance where vibration resistance and structural integrity are critical. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the 120,000 PSI tensile strength necessary for heavy machinery, automotive assemblies, and industrial equipment. The coarse UNC thread pattern combined with Class 3A fit ensures rapid installation and reliable performance in materials where fine threads might strip or fail. The integrated flange design eliminates washer requirements while the rounded button head profile offers a finished appearance with reduced snagging hazards. These fully threaded screws with 5/64" hex drive are particularly valuable in production environments where speed, reliability, and consistent clamping force are essential for operational efficiency.

Specification Summary & Compliance

This high-performance fastener features precision 6-32 UNC coarse threads with Class 3A fit for superior thread engagement and dimensional accuracy. The manufacturing process ensures consistent 0.138" thread diameter and proper thread spacing throughout the 5/8" length. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) requirements for chemical safety. The black-oxide surface treatment on alloy steel substrate provides enhanced corrosion protection while maintaining the mechanical properties required for industrial applications requiring 120,000 PSI tensile strength and Rockwell C32 hardness specifications.