S-90291A234 10-24 ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with the green nylon 6/6 plastic tip that prevents loosening under dynamic loads and protects shaft surfaces from damage
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Precise thread engagement with Class 3A thread fit for tighter tolerances and secure fastening in demanding applications
• Wide temperature compatibility as the nylon tip maintains performance across an extensive range from -50° to 250° F
• Easy installation and removal using a standard 3/32" hex key, saving time during assembly and maintenance operations
• Enhanced durability with Rockwell B80 hardness that resists wear and deformation under high clamping forces
• Reliable positioning through the coarse UNC thread spacing that ensures quick assembly and strong holding power

Professional Applications & Engineering Value

This 10-24 UNC set screw is engineered to address critical challenges in precision assembly and motion control systems. The 18-8 stainless steel construction provides exceptional corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor elements. The hex headless design allows for flush mounting in confined spaces while the nylon 6/6 plastic tip creates a vibration-resistant lock that prevents backlash in pulleys, gears, and collars. With its Class 3A thread fit and coarse thread spacing, this fastener delivers superior clamping force distribution, eliminating the need for frequent retightening in high-vibration environments such as automotive components, conveyor systems, and industrial machinery. The combination of material strength and tip flexibility ensures damage-free installation on precision shafts and rotating elements.

Specification Summary & Compliance

This set screw features precision 10-24 UNC threads with Class 3A thread fit for superior dimensional accuracy. Manufacturing complies with ASME B18.3 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted hazardous substances. Critical dimensions include thread diameter of 0.19", length of 3/16", and drive size of 3/32" hex.