S-92240A105 1/4"-28 x 5/8" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws
18-8 Stainless Steel Hex 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 corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing maintenance costs.
- Superior tensile strength of 80,000 PSI ensures reliable, high-load fastening for demanding industrial applications.
- Precise Class 2A thread fit guarantees smooth assembly, reduces cross-threading risks, and improves installation efficiency.
- Fine UNF thread design provides enhanced vibration resistance and superior holding power in critical assemblies.
- External hex drive and hex head allow for high-torque application with standard tools, speeding up installation and removal.
- Full threading along the 5/8" length offers maximum grip and adjustability across the entire fastener.
- Compliance with ASME B18.2.1, RoHS 3, and REACH ensures product reliability, safety, and environmental responsibility.
Professional Applications & Engineering Value
This 1/4"-28 UNF hex head screw is engineered to address common industrial challenges such as component loosening under vibration and corrosion-induced failure. The 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. Its fine thread spacing and Class 2A thread fit enhance clamping force and prevent back-off in high-stress environments, from machinery assembly to automotive systems. The external hex drive facilitates quick, secure fastening with common wrenches, reducing downtime. Ideal for heavy-duty fasteners in construction, manufacturing, and aerospace, this screw ensures long-term reliability and performance in critical applications.
Specification Summary & Compliance
This product features a Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and interchangeability. It complies with ASME B18.2.1 for mechanical and material specifications, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards without hazardous substances.
