S-94355A216 4-40 x 5/16" ASME B18.3 Set Screws
Set Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional holding power achieved through Class 3A thread fit precision for secure, vibration-resistant fastening
- Optimized installation efficiency with hex drive design allowing high torque application without head interference
- Enhanced material durability with Rockwell B80 hardness providing reliable performance under mechanical stress
- Secure flat tip engagement ensuring maximum surface contact and preventing component slippage
- Industry-standard compatibility with UNC coarse threads facilitating quick assembly and disassembly
- Headless space-saving design enabling flush mounting in confined applications
Professional Applications & Engineering Value
This 4-40 UNC Class 3A set screw delivers critical engineering solutions for precision assembly challenges. The 18-8 stainless steel composition provides excellent corrosion resistance in manufacturing, automotive, and electronics applications where environmental factors compromise fastener integrity. The headless hex drive design allows installation in space-constrained assemblies while maintaining high torque capability. With coarse thread spacing and Class 3A thread fit, this component ensures rapid installation and reliable positioning in pulleys, gears, and collars. The flat tip configuration maximizes surface contact area, preventing rotational slippage in high-vibration industrial equipment. Engineered to maintain precise alignment in mechanical systems, this set screw addresses common issues of component loosening and misalignment in demanding applications.
Specification Summary & Compliance
This precision fastener maintains Class 3A thread fit tolerances per UNC thread standards with 4-40 thread size and 5/16" length. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for industrial components.
