S-90272A620 1/4"-28 x 1/2" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc plating for extended service life in demanding environments
• Superior holding power with 60,000 PSI tensile strength and Rockwell B70 hardness for reliable fastening
• Optimized drive engagement with Phillips No. 3 drive style, reducing cam-out and improving installation efficiency
• Precise thread fit with Class 2A UNF fine threads ensuring secure, vibration-resistant connections
• Full-length threading provides maximum grip and load distribution across the entire fastener length
• Standard pan head design offers a low-profile, rounded finish with good wrenching clearance
• Regulatory compliance meets ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This zinc-plated steel screw delivers exceptional performance in industrial assembly where corrosion resistance and high tensile strength are critical. The UNF fine thread design provides superior resistance to loosening under vibration, making it ideal for machinery, automotive components, and electronic enclosures. The combination of Phillips drive and Class 2A thread fit ensures quick installation with reliable torque transfer, while the fully threaded construction maximizes load-bearing capacity. Engineered to withstand rigorous operating conditions, this pan head screw solves common fastening challenges in manufacturing and maintenance applications where durability and compliance with industrial standards are paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNF fine thread specifications. Complies with ASME B18.6.3 mechanical and dimensional requirements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restrictions.