S-90276A114 4-40 x 7/8" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from zinc plating, extending service life in demanding industrial environments
• Superior tensile strength of 60,000 psi ensures reliable performance under high-stress applications
• Rockwell B69 hardness provides excellent durability and resistance to wear and deformation
• Class 2A thread fit with UNC coarse threading offers easier assembly and reduced cross-threading risks
• Fully threaded 7/8" length maximizes grip and load distribution across the entire fastener
• Slotted drive design allows for straightforward installation with standard tools
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards

Professional Applications & Engineering Value

These 4-40 UNC zinc-plated steel rounded head slotted screws are engineered to address common industrial fastening challenges, such as vibration loosening and corrosion-induced failure. The zinc-plated steel construction provides a protective barrier against moisture and chemicals, making them ideal for machinery, electronics, and outdoor equipment. The coarse UNC threading ensures quick installation and secure holding power in materials where fine threads might strip. With a fully threaded design and rounded head profile, they distribute stress evenly and prevent surface damage, offering a dependable solution for high-tensile applications requiring consistent performance and regulatory compliance.

Specification Summary & Compliance

This product features precise Class 2A thread fit per UNC standards, with dimensions including a 0.112" thread diameter and 7/8" length. Manufactured to meet ASME B18.6.3 specifications for dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.