S-91253A706 1/2"-13 x 1/2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 130,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in industrial environments
• Precise thread engagement with Class 3A thread fit ensuring tight, secure fastening connections
• Easy installation and removal through the 5/16" hex drive design, allowing for efficient assembly and maintenance
• Optimal flush mounting with the 82° countersink angle and flat head profile for smooth surface finishes
• Full thread coverage along the 1/2" length provides maximum grip strength and distribution of clamping force
• Regulatory compliance assurance meeting ASTM F835, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

These 1/2"-13 UNC flat head screws deliver critical engineering solutions for industrial applications where vibration resistance and structural integrity are paramount. The black-oxide alloy steel construction combined with Rockwell C39 hardness provides exceptional durability against wear and environmental factors. The coarse thread design with Class 3A fit ensures rapid installation and superior holding power in metal-to-metal applications, while the fully threaded configuration maximizes surface contact for enhanced load distribution. The hex drive system accommodates high torque applications without stripping, making these industrial screws ideal for heavy machinery, structural frameworks, and equipment assembly where reliability cannot be compromised.

Specification Summary & Compliance

This fastener features precision UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and consistent performance. Manufactured to ASTM F835 specifications, these screws maintain strict quality control throughout production. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across various industrial sectors. The combination of alloy steel material with controlled heat treatment processes guarantees the specified mechanical properties, including the 130,000 psi tensile strength rating.