S-93705A585 5/16"-18 x 1 1/4" 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 nylon patch thread locker maintains secure fastening in temperatures from -70° to 250°F, preventing loosening in dynamic applications.
- Superior corrosion resistance from 18-8 stainless steel construction ensures long-term reliability in harsh industrial environments.
- High tensile strength of 70,000 psi provides exceptional load-bearing capacity for demanding mechanical assemblies.
- Precision Class 3A thread fit guarantees consistent engagement and reliable performance in critical applications.
- Hex socket drive design allows for high torque application and easy installation in confined spaces.
- Full threading along the 1-1/4" length offers versatile positioning and maximum grip strength.
- Compliance with major industry standards including ASME B18.3 ensures dimensional accuracy and interchangeability.
Professional Applications & Engineering Value
These 18-8 stainless steel socket head cap screws deliver critical performance advantages in demanding industrial settings. The combination of 70,000 psi tensile strength and Rockwell B70 hardness provides exceptional resistance to mechanical stress and deformation, making them ideal for heavy machinery, automotive assemblies, and precision equipment. The nylon patch thread locking feature solves the common problem of vibration-induced loosening, ensuring maintained clamp force in applications subject to continuous motion or thermal cycling. With UNC coarse threading and Class 3A fit, these fasteners offer quick assembly and reliable engagement in both soft and hard materials, while the corrosion-resistant properties of 18-8 stainless steel extend service life in humid or chemically aggressive environments.
Specification Summary & Compliance
This 5/16"-18 UNC socket head cap screw features precise Class 3A thread fit with coarse thread spacing and right-hand threading. Manufactured to ASME B18.3 specifications with a 1/4" hex drive and standard socket head profile. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.
