S-91375A642 3/8"-24 x 3/8" ASME B18.3, ASTM F912 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 black-oxide coating, extending service life in demanding industrial environments
- Precise Class 3A thread fit ensures secure, vibration-resistant fastening in critical assemblies
- Exceptional hardness (Rockwell C45) provides excellent wear resistance and prevents thread deformation
- Headless hex drive design allows for flush mounting in space-constrained applications
- Cup tip configuration creates positive locking action on shaft components without damaging surfaces
- Fine UNF threading delivers enhanced clamping force and superior resistance to loosening under vibration
- Full regulatory compliance with RoHS 3 and REACH standards for global manufacturing applications
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional performance in precision mechanical systems where vibration resistance and reliable positioning are critical. The headless hex drive design enables completely flush installation in pulleys, gears, and collars, eliminating protrusions in compact assemblies. The cup tip configuration provides superior biting action on shafts while minimizing surface damage compared to pointed alternatives. Manufactured to ASME B18.3 specifications with Class 3A UNF fine threads, this fastener maintains precise tolerances for high-stress applications in automotive, aerospace, and industrial machinery. The combination of Rockwell C45 hardness and corrosion-resistant black-oxide finish ensures long-term reliability in harsh operating conditions.
Specification Summary & Compliance
This set screw features 3/8"-24 UNF fine threads with Class 3A thread fit for precision applications, manufactured from alloy steel with black-oxide surface treatment. The fastener complies with ASME B18.3 dimensional standards and meets ASTM F912 material specifications. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, ensuring environmental safety for global industrial use.
