S-92710A229 4-40 x 3/16" Jack Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust in demanding industrial environments
• Precise installation and removal with 3/16" hex head design and tight ±0.005" tolerance for reliable tool engagement
• Exceptional mechanical strength delivering 55,000 psi tensile strength and Rockwell B40 hardness for heavy-duty applications
• Reliable thread engagement with Class 2A/2B fit ensuring consistent mating and vibration resistance in assemblies
• Extended thread length versatility with 7/8" male thread and 0.1" minimum female thread for adjustable positioning
• Environmental compliance meeting RoHS 3 standards for use in regulated industries and international markets
• Dual-gender threading providing both male and female 4-40 threads for flexible connection options in complex assemblies

Professional Applications & Engineering Value

These 4-40 jack screws deliver critical performance in precision mechanical systems where vibration resistance and positioning accuracy are paramount. The zinc-plated 12L14 steel construction provides excellent corrosion protection while maintaining the machinability required for high-volume production. With Class 2A/2B thread fit, these fasteners eliminate play in electronic enclosures, optical mounts, and precision instrumentation, preventing misalignment under thermal cycling and mechanical stress. The 7/8" thread length offers substantial adjustment range for leveling applications, while the 3/16" hex head ensures secure tool engagement during repeated maintenance cycles. Engineered for industrial fastening solutions requiring both strength and precision, these jack screws solve alignment challenges in telecommunications equipment, automated manufacturing systems, and precision mechanical assemblies.

Specification Summary & Compliance

Manufactured to inch system standards with precise dimensional tolerances of ±0.005" for both hex size and length. Features 4-40 UNC threads with Class 2A external and Class 2B internal thread fits per ASME B1.1 specifications. The zinc-plated 12L14 steel construction provides 55,000 psi tensile strength and Rockwell B40 hardness. Compliant with RoHS 3 (2015/863/EU) regulations under exemption 6(a)-I for lead as an alloying element in steel, ensuring environmental responsibility while maintaining mechanical performance.