S-92311A386 1/2"-20 x 2 1/2" 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-lasting performance in harsh environments
- Exceptional holding power due to Class 3A thread fit and fine UNF thread spacing for maximum engagement
- High-strength durability with Rockwell B80 hardness rating to withstand heavy-duty applications
- Secure installation with 1/4" hex drive providing reliable torque transmission without head interference
- Precision alignment through cup tip design that creates consistent seating and prevents component damage
- Industry compliance meeting ASME B18.3 specifications for dimensional accuracy and performance reliability
- Environmental safety with full RoHS 3 and REACH compliance for sustainable manufacturing standards
Professional Applications & Engineering Value
This 18-8 stainless steel hex headless set screw delivers critical engineering advantages in demanding industrial applications. The Class 3A thread fit with UNF fine threading provides superior vibration resistance and precise clamping force in machinery, automotive components, and precision equipment. The headless design allows for flush mounting in confined spaces while the cup tip creates positive seating without damaging shaft surfaces. Manufactured from corrosion-resistant 18-8 stainless steel with Rockwell B80 hardness, this fastener maintains integrity in high-stress environments while resisting chemical exposure and environmental degradation. Ideal for permanent assemblies requiring reliable positioning and maximum holding power without protrusion concerns.
Specification Summary & Compliance
This 1/2"-20 UNF set screw features precise Class 3A thread fit tolerances with fine thread spacing and 2-1/2" length. Manufactured to ASME B18.3 dimensional specifications with 1/4" hex drive and right-hand thread direction. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across industrial sectors.
