S-97705A145 2-56 x 1/4" QQ-P-35, MS51021-3 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit ensuring tight, reliable fastening in demanding applications
• Excellent corrosion resistance from 18-8 stainless steel construction for long-lasting performance in harsh environments
• Maximum torque transmission through hex drive design allowing secure installation without head interference
• Enhanced gripping capability with cup tip design that digs into mating surfaces for superior anti-loosening performance
• Quick installation efficiency with coarse UNC threads that reduce assembly time and prevent cross-threading
• Regulatory compliance assurance meeting Fed. Spec. QQ-P-35 (MS51021-3), RoHS 3, and REACH standards for global applications
• Precision engineering with 2-56 thread size and 1/4" length providing exact dimensional accuracy for critical assemblies

Professional Applications & Engineering Value

This 18-8 stainless steel set screw delivers exceptional engineering value in industrial applications where vibration resistance and corrosion protection are critical. The hex headless design with cup tip provides maximum contact pressure on shaft components, preventing rotational slippage in machinery, automotive, and aerospace assemblies. The 2-56 UNC coarse thread configuration ensures rapid installation while maintaining Class 3A precision fit for exacting tolerance requirements. Manufactured from corrosion-resistant 18-8 stainless steel, this fastener maintains integrity in humid, chemical, or outdoor environments where carbon steel components would degrade. The combination of right-hand thread direction and 0.035" hex drive accommodates standard tooling while the headless profile enables flush mounting in confined spaces.

Specification Summary & Compliance

This precision set screw features 2-56 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and tight tolerances. The fastener complies with Fed. Spec. QQ-P-35 (MS51021-3) manufacturing standards and maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 18-8 stainless steel construction provides consistent mechanical properties while the 1/4" length and 0.086" thread diameter deliver precise dimensional control for engineering applications requiring reliable set screw performance.