S-99926A147 5/16"-18 x 3/4" Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive Flat 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 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-lasting fastening
- Precise thread engagement with Class 3A fit and UNC coarse threads ensuring secure installation and vibration resistance
- Efficient installation using 5/32" hex drive and undercut flat head design for flush mounting and reduced cam-out
- Versatile industrial compatibility with 100° countersink angle and 3/4" length fitting standard applications
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe, sustainable usage
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 5/16"-18 UNC flat head screws deliver exceptional reliability where corrosion resistance and structural integrity are critical. The 18-8 stainless steel material combined with passivated finish provides superior protection against chemical exposure and oxidation, extending service life in manufacturing equipment, machinery assemblies, and outdoor installations. The hex drive design and undercut head profile enable high-torque installation without stripping, while the Class 3A thread fit maintains tight tolerances for vibration-prone environments. With coarse threading facilitating quick assembly and the 70,000 psi tensile strength ensuring joint integrity, these screws solve common fastening failures in automotive, construction, and heavy equipment sectors.
Specification Summary & Compliance
This flat head screw features precise UNC coarse threads with Class 3A fit and partial threading up to 0.57" minimum length. Manufactured to standard dimensions including 0.656" head diameter, 100° countersink angle, and 3/4" overall length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability.
