S-99553A226 8-32 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure
• Precise thread engagement with Class 3A fit UNC coarse threads ensuring reliable, vibration-resistant fastening
• High durability backed by Rockwell B80 hardness for long-term performance under mechanical stress
• Secure installation using a 5/64" hex drive that provides excellent torque transmission without head protrusion
• Optimized point contact with an oval tip design to minimize surface damage on shafts and components
• Broad industry compliance meeting ASME B18.3 specifications for dimensional accuracy and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated applications

Professional Applications & Engineering Value

These 8-32 UNC set screws in 316 stainless steel are engineered to address critical challenges in precision assemblies where space constraints and corrosion are concerns. The headless hex drive design allows for flush mounting in tight spaces, while the coarse thread and Class 3A fit provide rapid installation and high resistance to loosening under vibration. The oval tip ensures minimal marring of shafts and rotating parts, making them ideal for securing collars, pulleys, and gears in machinery, marine equipment, and food processing applications. Their exceptional corrosion resistance ensures reliability in moist or chemically aggressive environments, reducing maintenance frequency and downtime.

Specification Summary & Compliance

This set screw features an 8-32 UNC coarse thread with a Class 3A thread fit for precise tolerances, a 1/2" length, and a 5/64" hex drive. It conforms to ASME B18.3 dimensional standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring both performance reliability and regulatory safety.