S-90201A429 1/2"-13 x 2 1/2" Extreme-Strength Grade 9 Steel Hex Head Screws
Extreme-Strength Grade 9 Steel Hex 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 180,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance provided by the zinc yellow-chromate plating extends service life in harsh industrial environments.
- High hardness rating (Rockwell C38) offers excellent wear resistance and maintains thread integrity under repeated use.
- Coarse UNC threading with Class 2A fit allows for quick assembly and secure fastening, minimizing installation time.
- Partially threaded design provides optimal clamping force and prevents loosening in dynamic load conditions.
- External hex drive and standard hex head enable easy installation with common tools, enhancing workflow efficiency.
- Compliance with RoHS 3 and REACH standards ensures environmental safety and meets global regulatory requirements for industrial components.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this Grade 9 hex head screw addresses critical challenges in heavy machinery, construction, and automotive assemblies. The steel material and zinc yellow-chromate plating combat corrosion and oxidation, prolonging fastener life in outdoor or humid conditions. With a 1/2"-13 UNC coarse thread and partial threading, it delivers superior vibration resistance and clamping force, preventing joint failure in high-vibration environments. The external hex drive simplifies maintenance and disassembly, reducing downtime. Ideal for structural applications requiring 180,000 PSI tensile strength, this screw ensures operational reliability and cost-effective performance in industrial fastening systems.
Specification Summary & Compliance
This screw adheres to precise Class 2A thread fit and UNC standard for consistent dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring adherence to environmental and safety regulations. Manufactured to Grade 9 strength specifications with a right-hand thread direction, it guarantees reliable performance in coarse-thread applications.
