S-91375A781 10-32 x 1/4" 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 holding power with Class 3A thread fit for precise, vibration-resistant connections in critical assemblies
- Exceptional durability from Rockwell C45 hardness, resisting wear and deformation under high-stress conditions
- Reliable corrosion resistance with zinc plating on alloy steel, extending service life in harsh industrial environments
- Secure, flush installation thanks to the headless hex drive and cup point design that bites into surfaces without protruding
- Easy installation and removal using a standard 3/32" hex key, reducing assembly time and tooling complexity
- Fine thread spacing for improved adjustment accuracy and enhanced load distribution in precision applications
- Compliance with major standards including ASME B18.3, ensuring consistent quality and interchangeability
Professional Applications & Engineering Value
This 10-32 UNF Class 3A set screw is engineered to address common industrial challenges like component slippage and vibration-induced loosening. The zinc plated alloy steel construction provides excellent corrosion resistance, while the cup point design creates a firm grip on shafts, gears, and collars by concentrating pressure on a small contact area. The headless hex drive allows for flush mounting in confined spaces, making it ideal for machinery, automotive, and aerospace applications where space optimization and reliable torque transmission are critical. With fine thread spacing and Class 3A thread fit, it ensures precise positioning and maintains clamping force in dynamic environments, reducing maintenance needs and improving operational safety.
Specification Summary & Compliance
This set screw features a 10-32 UNF thread with Class 3A fit for tight tolerances and superior thread engagement. It meets ASME B18.3 specifications for dimensional accuracy and is manufactured from zinc plated alloy steel with Rockwell C45 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability in industrial use.
