S-90429A116 1-72 x 5/8" 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
- Exceptional tensile strength of 130,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Black-oxide finish on alloy steel provides enhanced corrosion resistance, extending service life in demanding industrial environments.
- Class 3A fine threading offers superior thread engagement and vibration resistance for secure, long-lasting assemblies.
- Hex drive design allows for easy installation with standard tools, minimizing assembly time and improving efficiency.
- Full threading along the 5/8" length ensures maximum grip and adjustability in various material thicknesses.
- High Rockwell C39 hardness maintains thread integrity and resistance to wear under repeated use.
- Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interoperability in precision engineering applications.
Professional Applications & Engineering Value
These 1-72 UNF flat head screws are engineered to address critical challenges in precision assemblies, such as maintaining tight tolerances and resisting loosening under vibration. The black-oxide alloy steel construction combats corrosion in harsh conditions, while the Class 3A fine thread ensures a secure fit in materials where coarse threads may strip. Ideal for electronics, aerospace, and machinery, these screws provide reliable fastening in applications requiring high tensile strength and minimal head protrusion. Their hex drive facilitates quick installation, reducing labor costs and enhancing productivity in industrial screw applications.
Specification Summary & Compliance
This product features precise Class 3A thread fit per UNF standards, ensuring tight tolerances for fine-thread applications. It meets ASME B18.3 and ASTM F835 specifications for dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting environmental and safety standards in global supply chains.
