S-94496A690 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 with zinc plating, extending service life in demanding industrial environments
- High-strength steel construction delivers 70,000 psi tensile strength for reliable load-bearing performance
- Precision UNC coarse threading ensures faster assembly and secure fastening in high-vibration applications
- External hex drive design provides excellent torque transmission and prevents tool slippage during installation
- Class 2A thread fit guarantees consistent engagement and interchangeability with standard components
- Extended 2 1/2" shoulder length offers precise component spacing and rotational support in mechanical assemblies
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance
Professional Applications & Engineering Value
This steel shoulder screw with 1/4"-20 UNC coarse threads and zinc plating addresses critical alignment and wear challenges in rotating assemblies. The precisely machined shoulder maintains accurate component positioning in machinery, while the external hex drive enables high-torque installation without damaging the shoulder surface. With 70,000 psi tensile strength and 35,000 psi shear strength, it withstands substantial mechanical stresses in automotive fixtures, conveyor systems, and industrial equipment. The Rockwell B80 hardness ensures durability against wear in high-cycle applications, making it ideal for precision pivots, bearing mounts, and linkage assemblies where dimensional stability is paramount.
Specification Summary & Compliance
Manufactured to Class 2A thread fit standards with UNC coarse threading for consistent performance. 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 steel alloying element and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global regulatory acceptance for industrial applications.
