S-94496A600 1/4"-20 Shoulder Screws
Shoulder 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 through zinc plating, extending service life in demanding industrial environments
- Exceptional load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for heavy-duty applications
- Precision alignment and smooth rotation enabled by the 1 7/8" shoulder with standard fit and smooth texture
- Reliable fastening performance with Class 2A thread fit ensuring consistent engagement and vibration resistance
- Easy installation and removal using standard tools thanks to the 5/8" external hex head design
- Optimized for high-volume assembly with UNC coarse threads providing quick installation and reduced cross-threading risk
- Compliance with international standards including RoHS 3 and REACH for global manufacturing applications
Professional Applications & Engineering Value
This steel shoulder screw delivers critical engineering solutions where precise component alignment and rotational movement are essential. The 1 7/8" shoulder length provides an accurate pivot point for gears, bearings, and linkages, while the 1/4"-20 UNC coarse thread ensures secure fastening in machinery, automotive assemblies, and industrial equipment. The zinc plated finish protects against corrosion in humid or outdoor environments, maintaining the Rockwell B80 hardness for long-term performance. Engineers specify this shoulder screw for applications requiring both structural support and rotational freedom, making it ideal for manufacturing jigs, conveyor systems, and precision mechanisms where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit tolerance for consistent performance. The shoulder diameter maintains tight tolerance of -0.004" to 0" while shoulder length tolerance is held within -0.005" to 0.005". Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations, ensuring environmental responsibility in industrial applications.
