S-90251A254 10-32 x 5/16" 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
- Vibration-resistant performance with nylon patch thread locker that maintains secure fastening in high-motion environments
- Superior corrosion resistance thanks to 18-8 stainless steel construction for extended service life in harsh conditions
- Precise thread engagement with Class 3A UNF fine threads ensuring reliable, tight fits in critical assemblies
- High-temperature capability with thread locker effective from -50° to 250°F for stable performance in thermal cycling applications
- Optimized installation torque through hex drive design allowing secure tightening without head protrusion in confined spaces
- Enhanced grip security with cup tip design that provides positive seating and reduces component slippage
- Consistent mechanical properties with Rockwell B80 hardness delivering dependable strength and wear resistance
Professional Applications & Engineering Value
This nylon patch locking set screw delivers critical vibration resistance in precision assemblies where 18-8 stainless steel provides essential corrosion protection. The Class 3A UNF fine threads maintain dimensional accuracy in machinery, automotive, and aerospace components subjected to thermal expansion. The headless hex drive design enables flush mounting in tight spaces while the cup tip creates secure contact points on shafts and collars. Engineered for high-temperature environments up to 250°F, this fastener solves loosening problems in motors, gearboxes, and rotating equipment where thermal cycling and vibration compromise standard fasteners.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNF thread form. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Features 10-32 thread size, 0.19" thread diameter, 5/16" length, and 3/32" hex drive. The nylon patch thread locker maintains performance across the specified temperature range of -50° to 250°F.
