S-92245A550 1/4"-20 x 2" FF-S-85, MS35307-314 Mil. Spec. 18-8 Stainless Steel Hex Head Screws
Mil. Spec. 18-8 Stainless Steel Hex Head 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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and joint integrity under stress
- Class 2A thread fit provides consistent, reliable engagement with standard nuts and threaded components
- Coarse UNC threading enables faster assembly and reduced cross-threading risk in production environments
- External hex drive design delivers secure tool engagement and high torque transmission capability
- Partial threading configuration optimizes clamping force distribution for superior fastened joint performance
- Full compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance
Professional Applications & Engineering Value
This 1/4-20 UNC hex head screw delivers exceptional engineering value through its passivated 18-8 stainless steel composition, providing superior corrosion resistance that extends service life in demanding applications. The coarse thread design significantly reduces installation time while minimizing cross-threading incidents in high-volume assembly operations. With 70,000 psi tensile strength and Rockwell B74 hardness, this fastener maintains structural integrity under vibration and dynamic loads common in industrial machinery, automotive assemblies, and construction equipment. The partially threaded configuration concentrates clamping force precisely where needed, preventing joint loosening while the external hex drive ensures reliable torque application during installation and maintenance procedures.
Specification Summary & Compliance
This 1/4-20 UNC hex head screw features Class 2A thread fit per standard inch system requirements, ensuring dimensional accuracy and interchangeability. Manufacturing complies with Fed. Spec. FF-S-85 (MS35307-314) for consistent quality and performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, confirming environmental responsibility and regulatory acceptance for global industrial applications.
