S-93310A341 1/2"-13 x 3/4" ASME B18.3, ASTM F879, MIL-DTL-18240 Thread-Locking Stainless Steel Button Head Hex-Drive Screws
Thread-Locking Stainless Steel Button Head Hex-Drive 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
- Superior vibration resistance with nylon patch locking that maintains secure fastening in high-motion environments
- Excellent corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial conditions
- High tensile strength of 70,000 PSI ensures reliable performance under heavy loads and stress
- Precise Class 3A thread fit provides consistent engagement and reduces the risk of cross-threading
- Hex drive design allows for high torque application and easy installation with standard tools
- Broad temperature tolerance from -70° to 250°F, suitable for diverse operating environments
- Full threading offers maximum grip length and uniform load distribution across the fastener
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this nylon patch locking screw delivers exceptional performance where vibration loosening is a critical concern. The 18-8 stainless steel material provides outstanding corrosion resistance, making it suitable for outdoor equipment, marine components, and chemical processing machinery. The coarse UNC thread and Class 3A fit ensure quick assembly and reliable engagement in various materials, while the hex drive design enables high torque transmission without slippage. These characteristics make it particularly valuable in automotive assemblies, heavy machinery, and structural frameworks where fastener integrity is paramount to operational safety and equipment longevity.
Specification Summary & Compliance
This fastener features 1/2"-13 UNC coarse threads with Class 3A precision fit for consistent performance. Manufacturing complies with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications, ensuring dimensional accuracy and reliability. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety standards for industrial use.
