S-91783A596 5/16"-18 x 3" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• High tensile strength of 100,000 psi ensures reliable performance under heavy loads and vibration
• Class 2A thread fit with UNC coarse threading provides easy installation and secure fastening in various materials
• Partially threaded design allows for precise clamping force control and prevents over-tightening
• Rockwell B100 hardness maintains thread integrity and durability through repeated use
• Slotted drive with rounded head offers compatibility with standard tools and reduced surface protrusion
• Full regulatory compliance including ASME B18.6.3, RoHS, and REACH for global project acceptance

Professional Applications & Engineering Value

These 5/16"-18 UNC rounded head slotted screws deliver exceptional engineering value in demanding applications where corrosion resistance and mechanical strength are critical. The 18-8 stainless steel composition combined with passivated finish provides superior protection against chemical exposure and atmospheric corrosion, making them ideal for marine equipment, food processing machinery, and outdoor structures. The partially threaded configuration ensures optimal stress distribution while the coarse UNC threading facilitates quick assembly in soft metals and plastics. With 100,000 psi tensile strength and standardized dimensions per ASME B18.6.3, these industrial fasteners eliminate premature failure risks in vibration-intensive applications while maintaining consistent performance across production runs.

Specification Summary & Compliance

This rounded head slotted screw features precise Class 2A thread fit tolerances with 5/16"-18 UNC coarse threads and right-hand threading direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance. With a 3" length and partial threading extending 1-1/2" minimum, these screws provide reliable fastening solutions while meeting international quality standards.