S-95289A141 1/4"-28 x 5/16" 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 environments and long-term reliability.
- Precise thread engagement with Class 3A fit and fine UNF threads, ensuring secure, vibration-resistant fastening in critical assemblies.
- High durability and strength from Rockwell B80 hardness, providing excellent resistance to wear and deformation under load.
- Secure installation and removal using the hex drive style, allowing for high torque application without slippage in confined spaces.
- Enhanced gripping performance due to the extended tip design, which increases contact area and prevents component slippage.
- Reliable compliance with ASME B18.3 standards, ensuring consistent quality and interchangeability in industrial applications.
- Environmental and safety adherence through RoHS 3 and REACH compliance, making it suitable for regulated global markets.
Professional Applications & Engineering Value
This 1/4"-28 UNF Class 3A set screw is engineered to address common industrial challenges such as component misalignment and loosening under vibration. Made from 18-8 Stainless Steel, it offers excellent corrosion resistance, reducing maintenance needs in moist or chemical-exposed settings. The fine thread and Class 3A fit provide tighter tolerances, minimizing backlash in precision machinery, while the extended tip enhances grip on shafts or collars, preventing rotational slip. Ideal for use in automotive, aerospace, and machinery assemblies, this hex headless set screw ensures reliable performance in high-stress applications, supported by its compliance with ASME B18.3 standards for consistent dimensional accuracy.
Specification Summary & Compliance
This set screw features a 1/4"-28 UNF fine thread with Class 3A thread fit for high precision, and dimensions including a length of 5/16" and extended tip with specified tolerances. It is manufactured in accordance with ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.
