S-90291A842 0-80 ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Non-marring fastening: Nylon 6/6 plastic tip prevents damage to sensitive surfaces, maintaining product aesthetics and integrity.
• Superior corrosion resistance: 18-8 Stainless Steel construction ensures long-lasting performance in demanding environments.
• High-precision threading: Class 3A thread fit guarantees tight, secure connections with minimal backlash in fine-thread applications.
• Wide temperature tolerance: Operates reliably from -50°F to 250°F, suitable for varied industrial conditions.
• Enhanced durability: Rockwell B80 hardness provides excellent resistance to wear and deformation under load.
• Secure installation: Hex drive design allows for high torque application without slippage, ensuring consistent clamping force.
• Regulatory compliance: Meets ASME B18.3, RoHS 3, and REACH standards for safe, globally acceptable use.

Professional Applications & Engineering Value

This 0-80 UNF fine thread set screw is engineered to address critical challenges in precision assembly, where surface protection and vibration resistance are paramount. The nylon tip eliminates galling and damage on shafts, gears, and knobs, making it ideal for adjustable components in machinery, electronics, and optical devices. Constructed from 18-8 stainless steel, it resists oxidation and chemical exposure, while the Class 3A thread fit ensures repeatable, secure fastening in high-vibration environments. Its headless hex drive design allows for flush mounting in confined spaces, providing reliable performance in industrial fastening applications without compromising equipment longevity.

Specification Summary & Compliance

This set screw features a 0-80 UNF fine thread with Class 3A fit for precise dimensional accuracy, manufactured in compliance with ASME B18.3 standards. It is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations for industrial use.