S-90272A078 2-56 x 5/16" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• High tensile strength of 60,000 psi ensures reliable fastening under demanding mechanical loads
• Rockwell B70 hardness provides excellent durability and resistance to wear during installation and use
• Class 2A thread fit with UNC coarse threading enables quick assembly and secure holding power
• Phillips No. 1 drive design offers familiar, slip-resistant engagement for efficient installation
• Fully threaded 5/16" length maximizes grip range and versatility across various material thicknesses
• Compliance with ASME B18.6.3 standards guarantees precise dimensional accuracy and interchangeability

Professional Applications & Engineering Value

These zinc-plated steel rounded head screws with 2-56 UNC coarse threading address critical challenges in industrial assembly where corrosion resistance and structural integrity are paramount. The pan head profile distributes clamping force effectively while the Phillips drive ensures consistent torque application without cam-out issues. Engineered for electronic enclosures, machinery components, and automotive assemblies, these fasteners prevent galvanic corrosion while maintaining 60,000 psi tensile strength in vibration-prone environments. The fully threaded design accommodates varying material thicknesses, eliminating the need for multiple screw types in inventory.

Specification Summary & Compliance

Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerances for consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries. The UNC coarse thread series provides optimal engagement in both metallic and non-metallic materials while maintaining Rockwell B70 hardness standards throughout the fastener structure.