S-90291A409 5/16"-24 ASME B18.3 Set Screws
Set Screws
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Basic Information
Head Parameters
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior vibration resistance with a durable green nylon 6/6 plastic tip that maintains a secure grip without loosening under dynamic loads.
- Surface protection from the non-marring nylon tip, preventing damage to expensive components during assembly and disassembly.
- Excellent corrosion resistance provided by 18-8 stainless steel construction, ideal for harsh or humid industrial environments.
- High-precision threading with Class 3A fit for tight tolerances and reliable, repeatable fastening in critical applications.
- Wide temperature tolerance from -50° to 250°F, ensuring consistent performance in extreme operating conditions.
- Easy installation and removal using a standard 5/32" hex drive, compatible with common tools for efficient maintenance.
- Compliance with industry standards including ASME B18.3, ensuring quality and interchangeability in professional settings.
Professional Applications & Engineering Value
This 5/16"-24 UNF nylon tip set screw is engineered to address common industrial challenges such as component slippage and surface damage in precision assemblies. The 18-8 stainless steel body offers robust strength and corrosion resistance, while the green nylon 6/6 plastic tip acts as a resilient buffer, reducing wear on mating surfaces and enhancing grip under vibration. Ideal for applications in machinery, automotive, and electronics, the fine thread and Class 3A fit provide superior holding power in right-hand thread configurations, making it a reliable choice for headless set screws used in adjustable fixtures and rotating components where secure, non-damaging fastening is critical.
Specification Summary & Compliance
This set screw features a 5/16"-24 UNF fine thread with Class 3A precision fit, ensuring tight dimensional accuracy and reliable performance. Manufactured in compliance with ASME B18.3 specifications, it meets rigorous engineering standards. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.
