S-92710A209 4-40 x 3/16" Jack Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc yellow-chromate plating, extending service life in harsh industrial environments.
• Reliable, vibration-resistant assembly thanks to the included lock washer and two flat washers, preventing loosening under dynamic loads.
• High-strength performance with 55,000 psi tensile strength and Rockwell B40 hardness, ensuring durability under significant mechanical stress.
• Precise, easy installation using the 3/16" hex size with tight ±0.005" tolerance, allowing for secure tool engagement and consistent torque application.
• Accurate and compatible threading with Class 2A (male) and Class 2B (female) 4-40 threads, providing smooth engagement and reliable fastening in standard applications.
• Complete, ready-to-use kit including hex nut, lock washer, and two flat washers, saving time and reducing sourcing complexity for assembly projects.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and international markets.

Professional Applications & Engineering Value

This 4-40 Jack Screw Set is engineered to address common challenges in precision assembly, such as component spacing, alignment, and secure mounting in electronics, machinery, and instrumentation. The zinc yellow-chromate plated 12L14 steel construction offers superior corrosion protection, reducing maintenance needs in humid or corrosive environments. The Class 2A/2B thread fit ensures minimal backlash and reliable engagement, critical for applications requiring repeated adjustments or stability. Combined with a 55,000 psi tensile strength, this set provides a robust solution for securing panels, circuit boards, and mechanical parts where vibration resistance and long-term reliability are paramount. The inclusion of a hex nut, lock washer, and flat washers simplifies inventory management and enhances assembly efficiency for B2B users in manufacturing and maintenance sectors.

Specification Summary & Compliance

The jack screw features precise inch system measurements, including a 3/16" hex size with a tolerance of -0.005" to 0.005" and a 4-40 thread size with Class 2A (male) and Class 2B (female) fit per standard threading guidelines. Manufacturing adheres to strict quality controls, with compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and suitability for industrial and electronic applications worldwide.