S-92240A485 5/8"-18 x 2 1/4" 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
- Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Precise thread engagement with Class 2A thread fit and fine UNF threading, ensuring secure fastening and vibration resistance
- Easy installation and removal with external hex drive and standard 15/16" head width for common tool compatibility
- Full thread coverage along the 2 1/4" length provides maximum grip and uniform stress distribution
- Regulatory compliance meets ASME B18.2.1 standards, RoHS 3, and REACH for safe, quality-assured use
- Right-hand thread design offers familiar, efficient fastening for standard assembly applications
Professional Applications & Engineering Value
This 5/8"-18 UNF hex head screw delivers critical performance in demanding industrial settings where corrosion resistance and high tensile strength are paramount. Manufactured from 18-8 stainless steel, it effectively combats rust and chemical degradation in marine, chemical processing, and outdoor equipment applications. The fine thread spacing and Class 2A thread fit provide superior vibration resistance and clamping force retention, preventing loosening under dynamic loads. With its external hex drive and fully threaded design, it ensures quick installation and uniform load distribution across the entire 2 1/4" length, making it an ideal industrial fastener for machinery, structural assemblies, and heavy-duty equipment requiring reliable, long-term performance.
Specification Summary & Compliance
This hex head screw features precision 5/8"-18 UNF fine threads with Class 2A thread fit per ASME standards, ensuring consistent dimensional accuracy and interchangeability. It is manufactured in compliance with ASME B18.2.1 specifications for hex cap screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for regulated industrial and international markets.
