S-91249A616 4-40 x 11/16" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from Black-Oxide 18-8 Stainless Steel, ideal for harsh environments and reducing maintenance costs.
• High tensile strength of 70,000 psi ensures reliable performance under load, minimizing the risk of fastener failure.
• Full threading with 4-40 UNC coarse spacing provides faster installation and superior grip in a variety of materials.
• Precise Class 2A thread fit guarantees consistent, vibration-resistant connections for long-term assembly integrity.
• No. 1 Phillips drive and rounded pan head offer easy installation with standard tools and a low-profile, finished appearance.
• Compliance with ASME B18.6.3, RoHS 3, and REACH assures quality, safety, and environmental responsibility for industrial applications.
• Durable black-oxide finish enhances wear resistance and provides a sleek, non-reflective surface.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these Black-Oxide 18-8 Stainless Steel screws combine high tensile strength and corrosion resistance to solve common issues like rust-induced failure and assembly inefficiency. The 4-40 UNC coarse thread and fully threaded design ensure quick, secure fastening in metal, plastic, and electronic enclosures, reducing installation time. The rounded pan head with a Phillips drive allows for flush mounting and easy access in confined spaces, making them ideal for machinery, automotive components, and outdoor equipment where durability and regulatory compliance are critical.

Specification Summary & Compliance

This screw features a 4-40 UNC thread with Class 2A fit and coarse spacing, ensuring dimensional accuracy and reliable engagement. It is manufactured in accordance with ASME B18.6.3 standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and industrial reliability.