S-97705A650 1/4"-28 x 1/4" QQ-P-35, MS51023-61 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
• Exceptional holding power from Class 3A fine thread fit, ensuring minimal backlash and reliable positioning in precision assemblies
• High torque application capability via the 1/8" hex drive, allowing for secure installation without head protrusion in space-constrained designs
• Enhanced grip and component protection with the cup tip design, distributing pressure evenly to prevent surface damage
• Right-hand thread direction for standard installation practices, improving assembly efficiency and reducing errors
• Compliance with stringent industrial standards including Fed. Spec. QQ-P-35, ensuring consistent quality and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance, supporting sustainable and safe manufacturing processes

Professional Applications & Engineering Value

This 1/4"-28 UNF Class 3A hex headless set screw is engineered to address critical challenges in precision machinery, automotive, and aerospace applications where vibration resistance and corrosion protection are paramount. The 18-8 Stainless Steel material combats rust and chemical exposure, while the fine thread spacing and Class 3A fit deliver tight tolerances that prevent loosening under dynamic loads. Its headless design with a 1/8" hex drive enables flush mounting in confined spaces, maximizing torque transfer without compromising structural integrity. Ideal for securing gears, pulleys, and collars, this cup tip set screw ensures minimal marring of shafts, extending the lifespan of high-value components and reducing maintenance downtime in demanding industrial settings.

Specification Summary & Compliance

This set screw features a 1/4"-28 UNF fine thread with Class 3A thread fit for high precision and minimal clearance, adhering to Fed. Spec. QQ-P-35 (identified as MS51023-61) for consistent manufacturing quality. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring the absence of hazardous substances and supporting environmental safety in industrial applications.