S-96870A231 5/16"-18 x 1 1/4" ASME B18.2.1, ASTM F593 Grade 630 High-Strength 17-4 PH Stainless Steel Hex Head Screws
High-Strength 17-4 PH Stainless 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 corrosion resistance from 17-4 PH Stainless Steel, ideal for harsh environments and long-term reliability.
- High tensile and yield strength (130,000 PSI and 105,000 PSI respectively) for superior load-bearing capacity in demanding applications.
- Precise Class 2A thread fit ensures easy assembly and reliable engagement, reducing installation time and risk of cross-threading.
- Durable Rockwell C28 hardness provides excellent wear resistance, maintaining fastener integrity under repeated stress.
- Coarse UNC thread design offers faster installation and better performance in materials prone to stripping or vibration.
- Full threading along the 1-1/4" length allows for maximum adjustability and secure fastening in various material thicknesses.
- External hex drive and hex head facilitate easy installation with standard tools, enhancing efficiency in assembly lines.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these 5/16"-18 UNC hex head screws address critical challenges in machinery, construction, and automotive assemblies where vibration resistance and structural integrity are paramount. The 17-4 PH Stainless Steel composition, combined with a Rockwell C28 hardness, ensures durability against corrosion and mechanical wear, reducing maintenance costs and downtime. The coarse thread and Class 2A fit provide reliable performance in softer materials or high-vibration environments, preventing loosening and ensuring long-term joint security. Fully compliant with ASME B18.2.1 standards, these screws deliver consistent quality for critical fastening solutions in aerospace, marine, and chemical processing industries.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with Class 2A tolerance for precise fit, a length of 1-1/4", and is fully threaded. It meets ASME B18.2.1 specifications and ASTM F593 Grade 630 for material consistency. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory adherence for global industrial use.
