S-90251A194 8-32 x 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
- Vibration-resistant locking with nylon patch thread locker prevents loosening in high-stress environments
- Corrosion-resistant 18-8 stainless steel construction ensures long-term durability in harsh industrial conditions
- Precise Class 3A thread fit delivers superior engagement and consistent clamping force
- High-temperature performance with thread locker effective from -50° to 250°F for demanding applications
- Secure hex drive design (5/64") provides reliable torque transmission without head protrusion
- Cup tip configuration creates positive seating and minimal surface damage on components
- Rockwell B80 hardness maintains structural integrity under repeated tightening cycles
Professional Applications & Engineering Value
This 8-32 UNC set screw delivers exceptional engineering value for precision assembly applications where vibration resistance and space constraints are critical concerns. The 18-8 stainless steel material provides excellent corrosion resistance while maintaining the Rockwell B80 hardness needed for repeated use in manufacturing equipment, automotive components, and electronic enclosures. The nylon patch locking element effectively counters vibrational loosening in dynamic systems, eliminating the need for additional locking hardware. The headless design with hex drive allows installation in confined spaces while the cup tip ensures secure contact with shafts and collars without excessive surface deformation. This combination of features makes it ideal for permanent positioning applications in machinery, robotics, and precision instruments where reliability is paramount.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with UNC coarse threads and precise Class 3A thread fit for optimal engagement. The screw features right-hand threading with 8-32 thread size and 1/2" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. The thread locker maintains performance across the specified temperature range of -50° to 250°F.
