S-92710A227 4-40 x 3/16" Jack Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc-plated 12L14 steel construction provides reliable protection against rust, extending component lifespan in humid or industrial settings.
• Precision Thread Engagement: Class 2A/2B thread fit ensures smooth, secure mating with minimal risk of cross-threading, reducing assembly errors and rework.
• High Tensile Strength: Rated at 55,000 psi tensile strength, these screws withstand significant mechanical loads without failure, ideal for vibration-prone applications.
• Consistent Dimensional Accuracy: Tight hex size and length tolerances (±0.005") guarantee uniform fit and alignment in precision assemblies like electronics or machinery.
• Robust Material Hardness: Rockwell B40 hardness offers excellent wear resistance, maintaining thread integrity through repeated installation cycles.
• Versatile Standoff Design: Male-female 4-40 thread configuration enables flexible stacking and spacing in PCB mounts or enclosures, simplifying complex layouts.
• Environmental Compliance: RoHS 3 (2015/863/EU) compliance with exemption 6(a)-I ensures adherence to global regulatory standards for hazardous substance restrictions.

Professional Applications & Engineering Value

These 4-40 jack screws address critical challenges in precision industries by combining zinc-plated 12L14 steel durability with exacting Class 2A thread fit tolerances. The hex standoff design provides stable spacing and grounding paths in electronic assemblies, preventing short circuits while resisting loosening under vibration. With a 55,000 psi tensile strength and corrosion-resistant plating, they outperform standard fasteners in automotive control modules, telecom infrastructure, and industrial automation systems where reliability is non-negotiable. The male-female threading allows modular component stacking, reducing part counts and streamlining maintenance in confined spaces.

Specification Summary & Compliance

Manufactured to inch system standards with 4-40 thread size and Class 2A/2B thread fit per ASME B1.1, ensuring interchangeability. Dimensional controls include hex size (3/16") and length (3/16") held to ±0.005" tolerance. Full compliance with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead alloying in steel, meeting international environmental directives without compromising mechanical performance.