S-91253A286 12-24 x 2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 130,000 psi for reliable performance in demanding industrial applications.
- Superior corrosion resistance with black-oxide coating on alloy steel, extending service life in harsh environments.
- Precise Class 3A thread fit ensures tight, secure fastening with minimal risk of loosening under vibration.
- Partially threaded design allows for controlled clamping force and reduced risk of cross-threading during installation.
- 82° countersink angle provides a flush, low-profile finish for streamlined assemblies and improved aesthetics.
- Hex drive compatibility with 1/8" drive size enables easy installation and removal using standard tools.
- Compliance with ASTM F835, RoHS 3, and REACH guarantees adherence to rigorous quality and environmental standards.
Professional Applications & Engineering Value
These 12-24 UNC flat head screws are engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion in exposed environments. The black-oxide alloy steel construction, combined with a Rockwell C39 hardness, provides durability against wear and environmental stressors, making them ideal for machinery, automotive, and structural assemblies. The coarse UNC threads and Class 3A fit ensure rapid installation and high clamping force, reducing assembly time while maintaining integrity under heavy loads. Partially threaded sections help prevent over-tightening and thread damage, offering consistent performance in high-tensile applications where reliability is paramount.
Specification Summary & Compliance
This product adheres to Class 3A thread fit for precise dimensional accuracy and meets ASTM F835 specifications for mechanical properties. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability. The screw features a 2" length with a minimum thread length of 7/8", UNC coarse threading, and an 82° countersink angle, designed for consistent performance in standardized industrial fastening systems.
