S-90276A561 1/4"-28 x 1" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in harsh environments
• Superior holding power from fully threaded design and 60,000 psi tensile strength for reliable fastening
• Precise thread engagement with Class 2A thread fit and UNF fine threads ensuring vibration-resistant connections
• Easy manual installation with standard slotted drive and rounded head profile for straightforward tool compatibility
• Consistent performance backed by Rockwell B69 hardness for dimensional stability under load
• Regulatory compliance meeting ASME B18.6.3 specifications and environmental standards for global industrial use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these zinc-plated steel screws combine corrosion protection with high tensile strength to prevent fastener failure in machinery, equipment assembly, and structural components. The UNF fine threads and Class 2A thread fit provide superior resistance to vibration loosening, while the fully threaded design ensures maximum grip length for critical joints. The slotted drive and rounded head profile facilitate quick installation in confined spaces, making them ideal for maintenance operations and OEM manufacturing where ASME B18.6.3 compliance is required.

Specification Summary & Compliance

This screw features precision 1/4"-28 UNF fine threads with Class 2A thread fit tolerances, manufactured to ASME B18.6.3 standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets. Dimensional specifications include 1" length, 0.472" head diameter, and right-hand threading for standardized installation.