S-91249A368 1/4"-20 x 2 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coated 18-8 stainless steel, ideal for harsh industrial environments
- Exceptional tensile strength of 70,000 psi ensures reliable performance under heavy loads
- Precise Class 2A thread fit with UNC coarse threads for quick assembly and vibration resistance
- Durable Rockwell B70 hardness maintains structural integrity and resists wear over time
- Full threading design provides maximum grip and uniform load distribution along the entire length
- Comfortable No. 3 Phillips drive allows for efficient installation with standard tools
- Compliance with ASME B18.6.3 and environmental standards (RoHS 3, REACH) ensures quality and safety
Professional Applications & Engineering Value
This black-oxide 18-8 stainless steel screw is engineered to address common industrial challenges such as corrosion, high-stress fatigue, and assembly efficiency. The Phillips pan head design with a rounded profile offers a low-profile, secure fastening solution that minimizes protrusion and snagging risks in machinery, enclosures, and structural frameworks. Its UNC coarse threads and Class 2A fit enable rapid installation and reliable holding power in materials like metal, plastic, or wood, reducing downtime in production lines. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures long-term durability in demanding applications, from automotive assemblies to outdoor equipment, where resistance to environmental factors and mechanical stress is critical.
Specification Summary & Compliance
This screw adheres to Class 2A thread tolerance per UNC standards, with a 1/4"-20 coarse thread and fully threaded 2-1/2" length for consistent performance. It meets ASME B18.6.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global industrial use.
