S-91249A645 1/4"-20 x 2 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 stainless steel, ideal for harsh industrial environments
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration
• Class 2A thread fit with UNC coarse spacing provides easy installation and secure fastening in various materials
• Fully threaded design offers maximum grip length and consistent holding power along the entire shank
• Phillips No. 3 drive with pan head delivers efficient torque transfer and a low-profile, rounded finish
• Compliance with ASME B18.6.3 guarantees dimensional accuracy and interchangeability for professional use
• RoHS 3 and REACH compliant meets environmental regulations for safe, sustainable sourcing

Professional Applications & Engineering Value

This 1/4"-20 x 2-1/4" Black-Oxide 18-8 stainless steel screw is engineered to address common industrial challenges, such as corrosion in humid or chemical-exposed settings. The Black-Oxide coating on 18-8 stainless steel enhances durability and reduces galling, while the Phillips pan head and UNC coarse threads allow for quick assembly in metal, wood, and plastic components. With a 70,000 psi tensile strength and fully threaded design, it provides robust clamping force in machinery, automotive, and construction applications, minimizing loosening from vibrations. Meeting ASME B18.6.3 standards, it ensures precision fit and long-term reliability, making it a top choice for B2B procurement in demanding environments.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A fit for standard tolerance and easy installation. It complies with ASME B18.6.3 for dimensional consistency, and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations without hazardous substances.