S-91375A814 5/8"-18 x 1" 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
- Exceptional corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
- Superior holding power from Rockwell C45 hardness, preventing deformation under high torque applications
- Precise component positioning achieved through Class 3A thread fit for minimal backlash and vibration resistance
- Secure installation in confined spaces using the headless design with 5/16" hex drive
- Enhanced grip on shaft surfaces provided by the cup tip design for reliable torque transmission
- Reduced cross-threading risk with UNF fine threads ensuring smooth engagement in precision assemblies
- Global compliance assurance meeting RoHS 3 and REACH environmental regulations for international projects
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical performance in demanding mechanical systems where vibration resistance and positional stability are paramount. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in precision machinery, automotive assemblies, and industrial equipment. The cup tip design creates concentrated pressure points on shafts and collars, preventing slippage in high-torque applications. With UNF fine threads maintaining secure fastening under dynamic loads, this headless set screw solves space-constrained installation challenges while providing reliable, long-term performance in corrosive environments thanks to its protective black-oxide surface treatment.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision, this set screw maintains exacting dimensional tolerances for consistent performance. The 5/8"-18 UNF fine thread configuration ensures proper engagement while the 1" length and 5/16" hex drive provide standardized installation. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety for global industrial applications, backed by Rockwell C45 hardness verification for mechanical reliability.
