S-91375A810 5/8"-18 x 5/8" 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 on alloy steel, extending service life in demanding environments
- Exceptional holding power from the cup tip design that bites into shafts for secure, non-slip fastening
- High-strength performance backed by Rockwell C45 hardness, ensuring durability under heavy loads
- Precise thread engagement with Class 3A fine UNF threads, providing reliable, vibration-resistant connections
- Easy installation and removal using the 5/16" hex drive, allowing efficient maintenance with standard tools
- Space-saving headless design ideal for applications where flush mounting is required
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical challenges in industrial assembly, such as component slippage and corrosion-induced failure. The cup tip design creates a permanent indentation on shafts or collars, preventing rotational movement in high-torque applications like machinery drives and automotive systems. Made from alloy steel with Rockwell C45 hardness, it withstands repetitive stress and harsh conditions without deforming. The 5/8"-18 UNF fine threads and Class 3A fit ensure tight tolerances for precision equipment, while the headless hex drive allows flush installation in confined spaces. Ideal for securing gears, pulleys, and couplings, this fastener delivers reliable performance in manufacturing, aerospace, and heavy equipment sectors.
Specification Summary & Compliance
This set screw features a 5/8"-18 UNF thread with Class 3A tolerance for precise fit and fine thread spacing to enhance vibration resistance. It complies with ASME B18.3 manufacturing specifications, ensuring dimensional accuracy and reliability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.
