S-92695A112 4-40 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 ensuring precise, vibration-resistant fastening in demanding applications
- Enhanced corrosion resistance from black-oxide coating on alloy steel, extending service life in industrial environments
- Maximum grip penetration with 90° cone point design that bites securely into shafts and components
- High-strength durability backed by Rockwell C45 hardness for reliable performance under mechanical stress
- Space-saving headless design allowing flush mounting where clearance is limited
- Easy installation and removal with standardized 0.050" hex drive compatible with common tools
- Industry compliance assurance meeting ASME B18.3 specifications for consistent quality and interoperability
Professional Applications & Engineering Value
This 4-40 UNC set screw delivers critical engineering solutions for precision assembly challenges. The black-oxide alloy steel construction provides excellent corrosion protection while maintaining the Rockwell C45 hardness needed for high-strength applications. The 90° cone point creates permanent positioning marks on shafts and components, preventing rotational slip in pulleys, gears, and collars. With coarse UNC threads and Class 3A thread fit, it offers superior resistance to vibrational loosening in machinery, automotive, and aerospace assemblies. The headless hex drive design enables installation in confined spaces while maintaining tool accessibility, making it ideal for precision equipment where reliability cannot be compromised.
Specification Summary & Compliance
This 1/4" length set screw features precision 4-40 UNC threads with Class 3A thread fit for exacting dimensional accuracy. Manufactured to ASME B18.3 specifications, it ensures consistent performance and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. The right-hand thread direction with coarse thread spacing provides optimal engagement for secure fastening in various industrial applications.
