S-91375A181 5-40 x 7/16" 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
- Exceptional torque transmission through precise 1/16" hex drive design, preventing tool slippage during installation
- Maximum holding power achieved through Class 3A thread fit, ensuring vibration-resistant fastening in critical applications
- Enhanced durability with Rockwell C45 hardness alloy steel construction, resisting deformation under heavy loads
- Quick installation with right-hand coarse UNC threads, reducing assembly time in production environments
- Secure component positioning via cup tip design, providing positive contact and preventing movement in assemblies
- Reliable performance backed by ASME B18.3 specifications, ensuring consistent quality and dimensional accuracy
Professional Applications & Engineering Value
This 5-40 UNC set screw delivers exceptional engineering value in industrial applications where vibration resistance and secure positioning are critical. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining Rockwell C45 hardness for long-term performance in high-stress environments. The Class 3A thread fit ensures precise engagement with mating components, eliminating play and maintaining alignment in precision machinery, automotive assemblies, and industrial equipment. The headless design with 1/16" hex drive allows for flush mounting in confined spaces while providing excellent torque transmission. The cup tip configuration creates positive contact points, preventing shaft slippage in pulley systems, gear assemblies, and coupling applications where reliable torque transmission is essential.
Specification Summary & Compliance
This set screw features 5-40 UNC coarse threads with Class 3A thread fit for precision engagement and meets ASME B18.3 dimensional specifications. The product is fully compliant with RoHS 3 (2015/863/EU) environmental standards and REACH (EC 1907/2006) regulations regarding substance restrictions. Manufactured from alloy steel with black-oxide surface treatment, the fastener delivers consistent performance while meeting industry standards for quality and environmental responsibility.
