S-90299A542 1/4"-20 x 1" ASME B18.3, ASTM A574 Brass-Tip Alloy Steel Socket Head Screws
Brass-Tip Alloy Steel 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
- Superior tensile strength of 180,000 psi ensures reliable performance in high-stress industrial applications
- Non-marring brass tip prevents surface damage to delicate components while maintaining secure fastening
- Black-oxide coating on alloy steel provides enhanced corrosion resistance and durability
- Class 3A thread fit delivers precise, vibration-resistant connections for critical assemblies
- Hex socket drive design allows for high-torque installation in confined spaces
- Full thread coverage enables consistent clamping force along the entire fastener length
- Rockwell C39 hardness maintains structural integrity under repeated loading cycles
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw with UNC coarse thread configuration addresses critical engineering challenges in precision manufacturing and heavy machinery. The non-marring brass tip specifically solves the common industrial problem of surface damage during assembly, making it ideal for applications involving finished surfaces, electronic enclosures, and sensitive instrumentation. The combination of Class 3A thread fit and 180,000 psi tensile strength ensures vibration resistance in dynamic environments while the hex socket drive facilitates installation in space-constrained applications. These industrial fasteners maintain dimensional stability across temperature variations, providing consistent performance in automotive, aerospace, and manufacturing equipment where reliability cannot be compromised.
Specification Summary & Compliance
This 1/4"-20 UNC socket head cap screw features precise Class 3A thread fit tolerances and coarse thread spacing per unified thread standards. Manufactured to ASME B18.3 specifications using ASTM A574 alloy steel, the fastener maintains dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical safety, ensuring environmental responsibility in industrial supply chains.
