S-92311A321 4-48 x 1/8" ASME B18.3 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
- Maximum holding power and vibration resistance achieved with a Class 3A fine UNF thread fit for secure, precise fastening.
- Exceptional durability and strength from Rockwell B80 hardness, preventing deformation under high stress.
- Easy installation and removal with a hex drive (0.050") and headless design, ideal for confined spaces.
- Secure, non-slip grip provided by the cup tip, which bites into surfaces to prevent component movement.
- Guaranteed dimensional accuracy and interchangeability through compliance with ASME B18.3 specifications.
- Safe for sensitive applications as it is RoHS 3 and REACH compliant, free from hazardous substances.
Professional Applications & Engineering Value
This 4-48 UNF Class 3A set screw is engineered to address critical challenges in precision assemblies, such as securing collars, gears, and pulleys on shafts without slipping. The 18-8 Stainless Steel material offers excellent corrosion resistance, making it suitable for use in moist or chemically aggressive environments, including marine, automotive, and food processing equipment. Its headless design and hex drive allow for flush mounting in tight spaces, while the fine thread spacing and Class 3A thread fit ensure a tight, reliable hold that resists loosening under vibration. The cup tip provides concentrated pressure for superior grip, reducing the risk of component shift in high-torque applications. Ideal for OEMs and maintenance teams, this screw delivers consistent performance in demanding set screw applications where precision and durability are paramount.
Specification Summary & Compliance
This set screw features a 4-48 UNF fine thread with a Class 3A thread fit for high precision and a length of 1/8". It is manufactured in accordance with ASME B18.3 standards, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer applications without hazardous substances.
