S-91375A411 9/16"-18 x 1 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 corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
- Precise Class 3A thread fit ensures tighter tolerances and reliable fastening in critical applications
- High-strength alloy steel construction with Rockwell C45 hardness provides exceptional durability under heavy loads
- Secure hex drive design allows for high-torque installation without slippage or tool damage
- Fine thread spacing delivers enhanced grip and vibration resistance in precision assemblies
- Headless cup tip design enables flush mounting while creating positive locking engagement
- Full regulatory compliance meets ASME B18.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional engineering value in industrial applications where vibration resistance and corrosion protection are critical. The 9/16"-18 UNF fine thread configuration provides superior holding power in precision machinery, automotive components, and heavy equipment assemblies. The headless design with cup tip creates positive locking action while maintaining a flush surface profile, eliminating protrusions in confined spaces. With Rockwell C45 hardness, this hex drive set screw withstands repeated adjustments without thread deformation, solving common issues of fastener loosening in high-vibration environments. The combination of Class 3A thread fit and black-oxide surface treatment ensures consistent performance in manufacturing, aerospace, and automotive applications where precision and reliability are non-negotiable.
Specification Summary & Compliance
This precision set screw features 9/16"-18 UNF fine threads with Class 3A thread fit for exceptional dimensional accuracy. Manufactured to ASME B18.3 specifications with Rockwell C45 hardness rating. The black-oxide alloy steel construction provides consistent performance across inch-measurement applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets.
