S-92710A203 4-40 x 3/16" Jack Screws

Key Features & Benefits at a Glance

• Superior Corrosion Resistance: Zinc Yellow-Chromate plating on 12L14 steel provides excellent protection against rust, extending service life in harsh industrial environments.
• High Tensile Strength for Demanding Applications: With a 55,000 psi tensile strength, this jack screw reliably handles high-stress loads without failure.
• Precision Thread Fit for Secure Connections: Class 2A/2B thread fit ensures consistent, reliable engagement with mating components, reducing the risk of loosening.
• Complete Assembly for Immediate Use: Includes a hex nut, lock washer, and two flat washers, saving installation time and ensuring a secure, vibration-resistant fastening solution.
• Durable Material Hardness: Rockwell B40 hardness provides excellent resistance to wear and deformation under load.
• Strict Dimensional Tolerances: Hex size and length tolerances of -0.005" to 0.005" guarantee precise fit and consistent performance in assembled products.
• Compliant for Global Industrial Use: Meets RoHS 3 and REACH compliance standards, ensuring they are safe for use in regulated markets and applications.

Professional Applications & Engineering Value

This 3/16" 4-40 Jack Screw assembly is engineered to solve critical fastening challenges in industrial and electronic applications. The Zinc Yellow-Chromate Plated 12L14 Steel construction offers a robust barrier against corrosion, which is essential in environments with moisture or chemical exposure. The Class 2A thread and precise hex head design allow for easy installation and reliable torque application, preventing stripping and ensuring a secure fit in panel mounting, equipment leveling, and spacing tasks. The included hardware kit—hex nut, lock washer, and flat washers—provides a complete, vibration-resistant solution, reducing assembly time and component sourcing for engineers. Its 55,000 psi tensile strength and consistent performance make it ideal for maintaining structural integrity in demanding precision assemblies.

Specification Summary & Compliance

This jack screw features a 4-40 thread size with a Class 2A/2B thread fit per standard inch system specifications, ensuring dimensional accuracy and interchangeability. Manufactured from 12L14 steel with a Rockwell B40 hardness, it meets rigorous mechanical property requirements. The assembly is compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I and REACH (EC 1907/2006), affirming its suitability for use in industrial and consumer products without hazardous substances.