S-90283A542 1/4"-20 x 1" ASME B18.6.3 Steel Pan Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Exceptional 60,000 psi tensile strength ensures reliable performance under heavy loads and vibration
• Rockwell B60 hardness provides excellent durability and resistance to wear during installation and use
• Class 2A thread fit with UNC coarse threading enables quick assembly and reduces cross-threading risks
• Fully threaded design offers maximum grip length and uniform load distribution across applications
• Slotted pan head design allows for easy installation with standard tools while providing a low-profile finished appearance
• Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental responsibility

Professional Applications & Engineering Value

This zinc-plated steel slotted pan head screw delivers critical engineering solutions for industrial assembly challenges. The combination of UNC coarse threading and Class 2A thread fit provides rapid installation while minimizing the risk of thread damage in high-volume production environments. The rounded pan head profile distributes clamping force effectively while maintaining a low-profile appearance ideal for machinery, equipment manufacturing, and electrical enclosures. With full threading along the entire 1" length, this fastener ensures maximum engagement strength in various material thicknesses. The zinc-plated surface treatment creates a protective barrier against corrosion, extending service life in demanding applications where moisture or chemical exposure is a concern. These industrial fasteners are engineered to maintain integrity under the 60,000 psi tensile loads typical in heavy machinery and structural applications.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance per UNC standards with precise 1/4"-20 coarse threading and right-hand thread direction. Manufacturing conforms to ASME B18.6.3 specifications for dimensional accuracy and performance reliability. The product is fully RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) requirements for environmental safety and restricted substances. With Rockwell B60 hardness and 60,000 psi tensile strength, this screw delivers consistent mechanical performance across industrial applications.