S-91375A160 6-40 x 1/8" 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 for extended service life in demanding environments
- Exceptional holding power through Class 3A thread fit precision for secure, vibration-resistant fastening
- Optimized torque transmission with hex drive design and 1/16" drive size for reliable installation
- Enhanced material durability with Rockwell C45 hardness alloy steel construction
- Precise component positioning using cup tip design for concentrated contact pressure
- Space-saving installation through headless design ideal for compact assemblies
- Regulatory compliance assurance meeting major industrial and environmental standards
Professional Applications & Engineering Value
This 6-40 UNF set screw delivers exceptional engineering value in precision mechanical systems where space constraints and vibration resistance are critical. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the Rockwell C45 hardness necessary for repeated adjustments without deformation. The fine thread spacing and Class 3A thread fit create maximum engagement surface area, effectively preventing loosening under dynamic loads in machinery, automotive, and aerospace applications. The headless design with hex drive allows installation in confined spaces while the cup tip concentrates clamping force for secure shaft and collar positioning. These features collectively solve common industrial challenges of component slippage, corrosion-induced failure, and limited access in assembly operations.
Specification Summary & Compliance
This precision fastener features 6-40 UNF right-hand fine threads with Class 3A thread fit for superior dimensional accuracy and engagement. The 1/8" length and 0.138" thread diameter provide consistent performance in standardized applications. Manufacturing complies with ASME B18.3 specifications (ASTM F912) ensuring dimensional integrity and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, confirming the absence of restricted substances for global industrial use.
