S-92991A124 1/4"-20 x 3/16" 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 high-quality brass construction, ensuring long-term reliability in harsh environments
- Precise Class 3A thread fit delivers exceptional engagement and vibration resistance for secure fastening
- Compact 3/16" length with headless design enables installation in space-constrained applications
- 1/8" hex drive provides excellent torque transmission and prevents tool slippage during installation
- Durable Rockwell B55 hardness maintains thread integrity and prevents deformation under load
- Cup tip design creates positive seating and minimizes component surface damage
- UNC coarse threading ensures quick assembly and disassembly while resisting cross-threading
Professional Applications & Engineering Value
This brass set screw delivers exceptional performance in demanding industrial applications where corrosion resistance and precision threading are critical. The Class 3A thread fit provides tighter tolerances than standard fasteners, ensuring secure positioning of components in machinery, electrical enclosures, and precision instruments. The headless design with 1/8" hex drive allows for flush mounting in confined spaces while maintaining high torque capability. The UNC coarse thread pattern combined with Rockwell B55 hardness prevents stripping and maintains thread integrity in high-vibration environments. Ideal for securing collars, gears, and knobs on shafts, this set screw solves common engineering challenges related to space limitations, corrosion concerns, and vibration-induced loosening in manufacturing equipment and electronic assemblies.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC coarse threading (1/4"-20). Features include 0.25" thread diameter, 3/16" length, right-hand thread direction, and cup tip configuration. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
