S-94355A721 5/16"-18 x 1" 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 with 18-8 stainless steel construction, ideal for harsh industrial environments
- Maximum holding power and vibration resistance due to Class 3A thread fit precision and Rockwell B80 hardness
- Secure, flush installation with headless design and flat tip for unobtrusive, reliable fastening
- Easy installation and removal using a standard 5/32" hex key, compatible with common tools
- Reliable performance in high-stress applications with coarse UNC threads and right-hand direction
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for safe use
Professional Applications & Engineering Value
This 5/16"-18 UNC hex headless set screw is engineered to address critical challenges in industrial assembly, such as component slippage and loosening under vibration. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for outdoor, marine, or chemical-exposed settings. Its Class 3A thread fit and coarse UNC threads ensure tight, precise engagement, reducing the risk of stripping and enhancing load distribution. The headless design with a flat tip allows for flush mounting in pulleys, collars, and gears, preventing interference while maintaining secure positioning. Ideal for machinery, automotive, and heavy equipment, this screw delivers long-term reliability and reduces maintenance needs in demanding applications.
Specification Summary & Compliance
This set screw features a 5/16"-18 UNC coarse thread with Class 3A thread fit for high precision and strength. It measures 1" in length with a 0.313" thread diameter and is manufactured from 18-8 stainless steel with a Rockwell B80 hardness. The product complies with ASME B18.3 specifications for dimensional accuracy and performance. It is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations.
