S-99553A399 10-32 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel material, ideal for harsh or wet environments.
• Exceptional holding power and vibration resistance due to the fine UNF thread and Class 3A fit for a tight, secure connection.
• High mechanical strength and durability provided by the Rockwell B80 hardness, preventing deformation under load.
• Secure, flush-mount fastening with a headless design and oval tip, minimizing protrusion and preventing component damage.
• Easy and reliable installation using the standard 3/32" hex drive, allowing for high torque application with common tools.
• Wide industrial compatibility as a right-hand thread, 10-32 inch set screw, conforming to common North American specifications.
• Compliance with major industry standards ensures reliability and safety in regulated applications.

Professional Applications & Engineering Value

This 10-32 UNF Class 3A set screw is engineered to solve critical challenges in precision assembly and machinery. Crafted from 316 Stainless Steel, it offers outstanding resistance to chemicals and saltwater corrosion, making it perfect for marine, chemical processing, and food industry equipment. The fine thread spacing and Class 3A thread fit provide a tighter grip and superior vibration resistance compared to coarse threads, essential for maintaining alignment in high-stress applications like motor shafts, gears, and pulleys. The headless design with an oval tip ensures a flush finish that protects adjacent components from damage while the 3/32" hex drive allows for secure, high-torque installation in confined spaces. This combination of material strength, thread precision, and secure drive style delivers reliable, long-term performance in demanding industrial settings.

Specification Summary & Compliance

This set screw features a 10-32 UNF fine thread with a Class 3A fit for high precision and a tight tolerance assembly. It is manufactured in compliance with the ASME B18.3 standard, ensuring dimensional accuracy and interchangeability. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from hazardous substances and suitable for use in regulated markets.