S-92949A446 5/16"-32 x 1/2" Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
- High tensile strength of 70,000 psi provides dependable load-bearing capacity for demanding applications
- Extra fine UNEF threading offers finer adjustment and improved holding power in thin materials
- Easy installation with 3/16" hex drive and rounded button head design for flush, low-profile finishes
- Full threading along the 1/2" length enables maximum grip and uniform stress distribution
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance
Professional Applications & Engineering Value
This 5/16"-32 UNEF rounded button head screw in 18-8 stainless steel is engineered to address common industrial challenges such as corrosion, vibration loosening, and space constraints. Its extra fine thread spacing and Class 3A thread fit deliver precise, secure fastening in applications like precision instruments, electronics, and aerospace components where fine adjustments and minimal backlash are critical. The hex drive and rounded head profile allow for easy torque application and a smooth, snag-free surface, reducing assembly time and improving safety. With excellent corrosion resistance and high tensile strength, it ensures long-term reliability in environments exposed to moisture, chemicals, or dynamic loads, making it a trusted choice for OEMs and maintenance teams.
Specification Summary & Compliance
This screw features a 5/16"-32 UNEF extra fine thread with Class 3A thread fit for high precision, manufactured to standard inch dimensions including a 1/2" length and 0.313" thread diameter. It meets industry standards for 18-8 stainless steel with a hardness of Rockwell B55 and tensile strength of 70,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety requirements for industrial use.
