S-92991A114 8-32 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
- Superior corrosion resistance with brass construction for extended service life in harsh environments
- Precise Class 3A thread fit ensures secure fastening with minimal backlash in critical assemblies
- High-strength Rockwell B55 hardness provides excellent wear resistance and repeated installation capability
- Compact 5/64" hex drive allows installation in tight spaces while maintaining high torque transmission
- Cup point design creates positive locking action and prevents component slippage under vibration
- Headless configuration enables flush mounting where protruding fasteners are not permissible
- Comprehensive compliance with ASME B18.3, RoHS 3, and REACH ensures regulatory acceptance
Professional Applications & Engineering Value
This 8-32 UNC brass set screw delivers exceptional performance in precision mechanical systems where corrosion resistance and reliable positioning are paramount. The Class 3A thread fit maintains tight tolerances in assemblies subject to vibration, while the coarse UNC thread enables quick installation and removal in maintenance-critical applications. The headless design with hex drive provides optimal space utilization in compact enclosures, instrumentation, and precision machinery. The cup tip configuration bites securely into shaft materials without causing excessive deformation, making these set screws ideal for permanent positioning of gears, pulleys, and collars in industrial equipment, marine components, and electrical assemblies where brass' non-magnetic and non-sparking properties add significant safety value.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision for superior engagement. Features 8-32 UNC coarse threads with right-hand direction, 5/16" length, and 5/64" hex drive. Constructed from brass with Rockwell B55 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global market acceptance.
