S-92845A117 4-40 x 3/8" 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 with 18-8 stainless steel construction for long-term reliability in harsh environments
- Precise thread engagement with Class 3A fit ensuring consistent clamping force and vibration resistance
- Enhanced tip penetration from extended tip design providing superior grip on shafts and components
- High torque capability through hex drive design allowing secure installation without stripping
- Optimized hardness at Rockwell B80 maintaining thread integrity under repeated adjustments
- Industry-standard compliance meeting ASME B18.3 specifications for dimensional accuracy
- Environmental responsibility with RoHS 3 and REACH compliance for global manufacturing applications
Professional Applications & Engineering Value
This 4-40 UNC set screw delivers exceptional engineering value in precision assembly applications where space constraints and vibration resistance are critical. The 18-8 stainless steel construction provides excellent corrosion resistance for demanding environments including marine, food processing, and outdoor equipment. The extended tip design ensures maximum contact surface area, preventing component slippage in high-torque applications while the Class 3A thread fit maintains precise tolerances for consistent performance. The headless configuration with hex drive allows for flush mounting in confined spaces, making it ideal for machinery, robotics, and precision instrument assemblies where reliability and dimensional accuracy are paramount.
Specification Summary & Compliance
Manufactured to ASME B18.3 standards with Class 3A thread fit precision, this set screw features UNC coarse thread spacing with right-hand orientation. The extended tip maintains tight diameter tolerances (-0.005" to 0") for consistent performance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures suitability for global industrial applications requiring strict material restrictions.
