S-90276A137 5-40 x 1 1/2" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in harsh industrial environments.
• High tensile strength of 60,000 psi provides reliable load-bearing capacity and prevents fastener failure under stress.
• Rockwell B69 hardness offers excellent durability and resistance to wear, maintaining thread integrity over repeated use.
• Class 2A thread fit with UNC coarse threading ensures easy installation and secure fastening in a wide range of materials.
• Fully threaded 1-1/2" length design allows for maximum grip and adjustability in deep or variable thickness applications.
• Slotted drive and rounded head profile enable straightforward installation with standard tools while reducing surface protrusion.
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.

Professional Applications & Engineering Value

These 5-40 UNC zinc-plated steel rounded head slotted screws are engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The zinc plating provides a protective barrier against moisture and chemicals, extending service life in demanding environments like outdoor equipment, machinery, and electrical enclosures. The coarse UNC threads and Class 2A fit facilitate quick, reliable installation in soft metals and plastics, reducing assembly time and minimizing cross-threading risks. With a fully threaded design and 1-1/2" length, they offer versatile fastening solutions for applications requiring deep penetration and strong clamping force, ensuring stability in dynamic or high-stress conditions.

Specification Summary & Compliance

These screws feature precise Class 2A thread fit and UNC coarse threads with a diameter of 0.125", ensuring consistent performance and interchangeability. Manufactured in accordance with ASME B18.6.3 specifications, they guarantee dimensional accuracy and reliability. Additionally, they are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming their safety for use in regulated industries and commitment to environmental standards.