S-98057A403 8-32 x 1/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life
• Excellent vibration resistance and secure locking provided by the cup point design, preventing component slippage
• Reliable and consistent thread engagement ensured by the Class 2A thread fit for predictable assembly performance
• High mechanical strength and durability from Rockwell B80 hardness, resisting wear and deformation under load
• Broad compatibility and easy installation with standard UNC coarse threads and a simple slotted drive
• Compliance with major industry standards including ASME B18.3, ensuring quality and interchangeability
• Safe for regulated industries with full RoHS 3 and REACH compliance, meeting environmental and safety directives

Professional Applications & Engineering Value

This 8-32 UNC set screw is engineered to address critical fastening challenges in demanding industrial settings. Manufactured from 316 Stainless Steel, it offers exceptional resistance to corrosion from chemicals, moisture, and salt spray, making it a top choice for marine, chemical processing, and food-grade equipment. The headless, slotted design allows for flush mounting in confined spaces, while the cup point bites securely into shafts and components, providing a strong mechanical lock that resists loosening from vibration—a common failure point in machinery and automotive assemblies. Its coarse thread spacing enables quick installation and high clamp force, ensuring reliable performance in industrial set screw applications where precision and holding power are non-negotiable.

Specification Summary & Compliance

This set screw features a thread size of 8-32 UNC with a 0.164" diameter and 1/8" length, manufactured to Class 2A thread fit tolerances for consistent, precise engagement. It conforms to the ASME B18.3 standard for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances and safe for use in various global markets.