S-92311A258 2-56 x 7/16" 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 from 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
- Exceptional thread engagement and vibration resistance due to Class 3A thread fit, providing secure, precise fastening.
- High-strength performance with Rockwell B80 hardness, offering excellent durability and wear resistance.
- Easy installation and removal using the 0.035" hex drive, allowing for efficient assembly in confined spaces.
- Secure component positioning with the cup tip design, preventing slippage and damage to shaft surfaces.
- Broad industrial compatibility through UNC coarse threading, ensuring reliable performance in various applications.
- Regulatory peace of mind with compliance to ASME B18.3, RoHS 3, and REACH standards.
Professional Applications & Engineering Value
This 2-56 UNC set screw is engineered for precision fastening in demanding industrial environments. Manufactured from 18-8 stainless steel, it provides excellent corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor conditions. The headless design and hex drive enable flush mounting and easy access in tight spaces, while the Class 3A thread fit ensures minimal backlash and superior vibration resistance—critical for maintaining alignment in machinery, automotive assemblies, and electronic enclosures. The cup tip offers concentrated holding force, preventing rotational slip on shafts and gears. Compliant with ASME B18.3 specifications, this screw delivers consistent performance for OEM and MRO needs where reliability is non-negotiable.
Specification Summary & Compliance
This set screw features a 2-56 UNC coarse thread with Class 3A precision tolerance, ensuring tight fit and reduced loosening under dynamic loads. It adheres to ASME B18.3 manufacturing standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.
