S-91263A529 8-36 x 1/2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy 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 zinc plating that protects against rust in demanding industrial environments
- Exceptional tensile strength rated at 130,000 psi ensures reliable performance under high-stress applications
- Precise Class 3A thread fit provides tighter tolerances for secure fastening in critical assemblies
- Optimized countersink design with 82° angle allows for flush mounting and clean surface finishes
- Enhanced drive engagement with hex drive system prevents cam-out and enables high-torque installation
- Full threading capability ensures maximum grip length and uniform load distribution
- Comprehensive compliance with ASTM F835, RoHS 3, and REACH standards guarantees regulatory acceptance
Professional Applications & Engineering Value
These 8-36 UNF Class 3A flat head screws deliver exceptional engineering value in precision assembly applications where vibration resistance and dimensional accuracy are critical. The zinc-plated alloy steel construction provides superior corrosion protection for machinery, automotive components, and electronic enclosures exposed to harsh operating conditions. The fine UNF thread spacing and Class 3A thread fit ensure secure fastening in thin materials and prevent loosening under dynamic loads. The 82° countersink angle and standard flat head profile enable seamless integration with countersunk holes, creating smooth surface finishes ideal for aerodynamic components and precision instruments. With 130,000 psi tensile strength and Rockwell C39 hardness, these screws maintain structural integrity in high-stress applications while the hex drive design allows for efficient installation in confined spaces.
Specification Summary & Compliance
This 8-36 UNF flat head screw features precision Class 3A thread fit with fine thread spacing and right-hand threading. Manufactured to ASTM F835 specifications with dimensional accuracy including 1/2" length, 0.359" head diameter, and 3/32" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
