S-90117A542 1/4"-20 x 1" ASME B18.3 Alloy Steel Wire-Lockable Socket Head Screws
Alloy Steel Wire-Lockable 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
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish for long-term use.
- Hex socket drive design allows for easy installation and removal in confined spaces with standard tools, improving assembly efficiency.
- Coarse UNC threads enable quick assembly and disassembly, reducing labor time in maintenance and production settings.
- Full threading along the 1" length ensures consistent clamping force and flexibility in various material thicknesses.
- Rockwell C37 hardness provides excellent wear resistance, maintaining thread integrity through repeated use.
Professional Applications & Engineering Value
Engineered for demanding environments, these Black-Oxide Alloy Steel Socket Head Cap Screws with 1/4"-20 UNC coarse threads address critical challenges in machinery, automotive, and heavy equipment assembly. The Class 3A thread fit and fully threaded design deliver secure fastening that withstands vibrations and dynamic loads, preventing joint failure. The hex drive facilitates torque application in tight spaces, while the black-oxide surface treatment resists rust and wear, extending service life in harsh conditions. Ideal for applications requiring high tensile strength and compliance with industry standards, these screws ensure operational reliability and reduced maintenance costs.
Specification Summary & Compliance
This product features precise Class 3A thread fit and UNC coarse threads with a 1/4"-20 size and 1" length, manufactured to ASME B18.3 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial use.
