S-91385A169 1/2"-13 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 vibration resistance through integrated nylon patch thread locker that maintains locking integrity even under extreme conditions
- Exceptional durability with black-oxide coated alloy steel construction providing excellent corrosion resistance in harsh environments
- Precise thread engagement with Class 3A fit ensuring reliable, secure fastening in critical applications
- High torque capability through hex drive design allowing for maximum tightening force without stripping
- Wide temperature tolerance with thread locker performance maintained from -50°F to 250°F for diverse operating conditions
- Optimized grip strength with cup tip design that creates secure contact points without damaging mating surfaces
- Enhanced mechanical strength with Rockwell C45 hardness rating for heavy-duty applications requiring repeated adjustments
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional performance in demanding industrial environments where vibration resistance and reliable positioning are critical. The 1/2"-13 UNC coarse thread configuration provides rapid installation while maintaining superior holding power, making it ideal for machinery components, power transmission systems, and precision equipment requiring secure shaft positioning. The integrated nylon patch thread locker eliminates the need for separate locking compounds, streamlining assembly processes while ensuring consistent performance across temperature variations from -50°F to 250°F. Engineered with Rockwell C45 hardness and headless design, this set screw withstands repeated adjustments without compromising structural integrity, solving common challenges of fastener loosening in high-vibration applications.
Specification Summary & Compliance
Manufactured to precise Class 3A thread fit tolerances with 1/2"-13 UNC coarse threads and right-hand thread direction. Complies with ASME B18.3 specifications where identified with ASTM F912 standards. Meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations (06/14/2023, 235 SVHC). Features include: 1-1/4" length, 1/4" hex drive, cup tip configuration, and black-oxide surface treatment on alloy steel substrate.
