S-93705A538 1/4"-20 x 5/8" ASME B18.3 18-8 Stainless Steel Thread-Locking Socket Head Screws
18-8 Stainless Steel Thread-Locking Socket 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
- Vibration-resistant locking with permanent nylon patch thread locker prevents loosening in high-stress applications, ensuring long-term assembly integrity.
- Exceptional corrosion resistance from 18-8 stainless steel material protects against rust and degradation in harsh industrial environments.
- High tensile strength of 70,000 psi provides reliable fastening for heavy-duty mechanical assemblies without risk of failure.
- Wide temperature tolerance from -70° to 250°F maintains performance stability across diverse operating conditions.
- Precision Class 3A thread fit ensures smooth installation and superior engagement with mating components.
- Hex socket drive design allows for high torque application and secure fastening in confined spaces.
- Industry-standard compliance with ASME B18.3 guarantees consistent quality and dimensional accuracy.
Professional Applications & Engineering Value
Engineered for demanding industrial fastening applications, these socket head cap screws combine 18-8 stainless steel construction with permanent nylon patch thread locking to solve critical vibration-induced loosening problems. The UNC coarse threads with Class 3A fit provide rapid installation and secure holding power in machinery, automotive, and equipment assembly where reliability is paramount. With Rockwell B70 hardness and 70,000 psi tensile strength, these screws withstand extreme mechanical stresses while the corrosion-resistant material ensures longevity in challenging environments. The hex drive socket design enables high-torque tightening in space-constrained applications, making them ideal for precision engineering and maintenance operations.
Specification Summary & Compliance
This 1/4"-20 x 5/8" socket head cap screw features UNC coarse threads with precision Class 3A thread fit for superior engagement. Manufacturing complies with ASME B18.3 standards for dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial use.
