S-98256A106 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance and lightweight strength from Grade 2 Titanium, ideal for harsh environments without compromising structural integrity.
• Precise component alignment and smooth rotation due to the 1/2" shoulder with tight diameter tolerance, reducing wear in assemblies.
• High tensile strength of 40,000 psi ensures reliable performance under heavy loads, minimizing failure risks.
• Easy installation and removal with the 5/64" hex socket drive and knurled head, providing secure grip and torque application.
• Superior thread engagement and vibration resistance from Class 3A fit and coarse UNC threads, maintaining tight fastening in dynamic applications.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and suitability for global industrial markets.
• Durability backed by Rockwell B80 hardness offers long service life, reducing maintenance needs and downtime.

Professional Applications & Engineering Value

This Grade 2 Titanium Shoulder Screw is engineered to address common industrial challenges such as misalignment, corrosion, and high-stress fatigue. The 4-40 UNC coarse threads and Class 3A thread fit provide excellent holding power in applications like precision machinery, aerospace components, and medical devices, where vibration resistance is critical. The knurled head and hex socket drive facilitate quick assembly in tight spaces, while the 1/2" shoulder length ensures accurate positioning of moving parts, reducing friction and extending equipment lifespan. Made from titanium, it offers a high strength-to-weight ratio, making it ideal for industries requiring lightweight yet robust shoulder screws that comply with stringent environmental standards.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise tolerance, ensuring reliable fastening. Dimensions include a thread diameter of 0.112", shoulder diameter of 1/8" with tolerance from -0.004" to -0.002", and shoulder length of 1/2" with tolerance from -0.005" to 0.005". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances and suitable for industrial use.