S-92785A528 1/4"-20 x 5/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Maximum holding power achieved through Class 3A thread fit ensuring precise, vibration-resistant fastening
• Enhanced grip and positioning with 90° cone point design that bites securely into mating surfaces
• Exceptional durability backed by Rockwell B80 hardness rating for reliable performance under heavy loads
• Streamlined installation using 1/8" hex drive for easy access in confined spaces without protruding heads
• Industry-standard compatibility with UNC coarse threads providing reliable engagement in various applications
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 1/4"-20 UNC hex headless set screw delivers exceptional engineering value in precision assembly applications where space constraints and vibration resistance are critical concerns. The 18-8 stainless steel composition provides excellent corrosion resistance for demanding environments including marine, chemical processing, and outdoor equipment. The 90° cone point design creates positive locking action by concentrating pressure on a small contact area, preventing component slippage in shafts, collars, and pulleys. With Class 3A thread fit and Rockwell B80 hardness, this set screw maintains dimensional stability and clamping force even under continuous vibration and thermal cycling. The headless configuration with 1/8" hex drive allows installation in recessed locations while maintaining clean profiles in machinery, automotive, and aerospace assemblies where protruding fasteners are not feasible.

Specification Summary & Compliance

This precision set screw features 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and engagement. Manufacturing complies with ASME B18.3 specifications ensuring consistent quality and performance. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components. Thread direction is standardized as right-hand with precise 5/8" length and 90° cone point angle for reliable positioning in mechanical systems.