S-91249A537 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh environments and reducing replacement frequency.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads, minimizing the risk of fastener failure.
• Rockwell B70 hardness provides excellent durability and resistance to wear, extending service life in demanding applications.
• Fully threaded UNC coarse spacing delivers superior grip and faster installation in a variety of materials.
• Class 2A thread fit offers consistent, reliable engagement for secure fastening with standard nuts and tapped holes.
• Phillips No. 3 drive with pan head allows for efficient driving and a low-profile, rounded finish that resists snagging.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees product quality, safety, and environmental responsibility for industrial use.

Professional Applications & Engineering Value

Engineered for industrial reliability, this Black-Oxide 18-8 Stainless Steel Phillips Pan Head Screw addresses common challenges like corrosion and mechanical stress in demanding settings. The 18-8 stainless steel base material, enhanced by a black-oxide coating, provides robust protection against rust and chemical exposure, making it suitable for outdoor equipment, marine hardware, and manufacturing assemblies. The fully threaded UNC coarse thread design ensures rapid installation and a strong hold in wood, metal, and plastic, reducing assembly time and improving joint integrity. With a rounded pan head and Phillips drive, it offers a secure, low-profile fastening solution that minimizes protrusion risks. Ideal for machinery, electrical enclosures, and structural applications, this screw delivers long-term performance where high tensile strength and regulatory compliance are critical.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse thread specifications, ensuring dimensional accuracy and compatibility with standard components. Manufactured in accordance with ASME B18.6.3 standards, it guarantees consistent quality and performance. Additionally, the product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its safety and environmental adherence for global industrial use.