S-90273A242 10-24 x 1/2" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Optimized installation efficiency through Phillips No. 2 drive design, preventing cam-out and ensuring secure fastening
• Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Precision thread engagement with Class 2A UNC coarse threads providing consistent, vibration-resistant connections
• Flush surface finishing enabled by standard 82° countersink angle and flat head profile for seamless assembly
• Full-threaded reliability ensuring maximum grip length and uniform stress distribution across the entire fastener
• Regulatory compliance assurance meeting ASME B18.6.3 specifications for dimensional accuracy and material standards

Professional Applications & Engineering Value

These 10-24 UNC flat head screws deliver critical engineering solutions for industrial assembly challenges. The zinc-plated steel construction provides essential corrosion protection in manufacturing facilities, electrical enclosures, and machinery where environmental exposure is a concern. The coarse thread design enables rapid installation in soft materials and prevents cross-threading, while the Class 2A thread fit maintains consistent clamping force in vibration-prone applications. The standard 82° countersink angle ensures flush mounting in predrilled surfaces, creating smooth finished appearances in consumer products, automotive components, and electronic housing. With full threading along the entire 1/2" length, these Phillips head screws provide maximum thread engagement for secure fastening in sheet metal, plastic assemblies, and wood applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit per UNC specifications, ensuring interchangeability and proper engagement. These screws conform to ASME B18.6.3 mechanical and dimensional requirements for flat head screws. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. The right-hand coarse threads (10-24 UNC) provide reliable fastening performance with standard 82° countersink angle for universal compatibility with industry-standard drill points.