S-98164A422 0-80 x 1/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional thread precision with Class 3A fit and UNF fine threading ensures secure, vibration-resistant fastening
• High tensile strength of 70,000 psi provides reliable load-bearing capacity for demanding applications
• Easy installation and removal with hex drive design requiring only 0.035" drive size for efficient maintenance
• Optimized head design with rounded button profile offers reduced protrusion while maintaining structural integrity
• Full threading along 1/4" length enables maximum engagement depth and uniform stress distribution
• Industry compliance assurance meeting ASME B18.3 standards with RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

Engineered for precision assemblies where corrosion resistance and thread reliability are critical, these 316 Stainless Steel rounded head screws solve common industrial challenges. The UNF fine thread configuration with Class 3A fit prevents loosening under vibration in machinery, electronics, and marine equipment. The passivated finish enhances surface durability while the hex drive ensures secure tool engagement during installation. With 70,000 psi tensile strength and Rockwell B55 hardness, these fully threaded fasteners maintain integrity in high-stress applications from precision instruments to chemical processing equipment.

Specification Summary & Compliance

This 0-80 UNF fine thread screw features precise Class 3A thread fit with 1/4" fully threaded length and right-hand threading. Manufactured to ASME B18.3 specifications with Rockwell B55 hardness and 70,000 psi tensile strength. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.