S-90002A124 1/2"-13 x 1 3/4" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification
High-Strength Steel Hex Head Screws with Material Certification
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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
- Maximum load-bearing capacity with 150,000 PSI tensile strength for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating in harsh industrial environments
- Exceptional hardness rating of Rockwell C33 ensures minimal wear and extended service life
- Reliable coarse threading (UNC) provides faster assembly and reduced cross-threading risks
- Precision Class 2A thread fit guarantees consistent engagement and vibration resistance
- Heavy-duty external hex drive enables high-torque installation with standard tools
- Full threading coverage offers versatile fastening solutions across various material thicknesses
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 8 hex head screws deliver exceptional performance in heavy machinery, structural steel connections, and high-vibration equipment. The UNC coarse thread configuration ensures rapid installation while maintaining superior clamping force in both soft and hard materials. The zinc yellow-chromate plating provides a durable barrier against oxidation and chemical exposure, significantly extending service life in outdoor or corrosive environments. With fully threaded design and external hex drive, these fasteners offer maximum versatility for construction, manufacturing, and automotive applications where high-strength fastening is critical to operational safety and equipment integrity.
Specification Summary & Compliance
Manufactured to exact Class 2A thread fit tolerances with UNC coarse threading (1/2"-13). Fully compliant with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. The Grade 8 classification guarantees consistent 150,000 PSI tensile strength and Rockwell C33 hardness across all production batches. Surface treatment meets industry standards for corrosion protection while maintaining dimensional stability under extreme loading conditions.
