S-92198A245 1 1/4"-7 x 4 1/2" 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 industrial environments
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and stress
- Rockwell B70 hardness provides superior durability and wear resistance for long service life
- Class 2A thread fit offers consistent assembly with standard nuts while maintaining easy installation
- External hex drive design allows for high-torque applications with common tools
- Partial threading provides optimal grip and clamping force for demanding mechanical connections
- Compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
This 1 1/4"-7 UNC hex head screw delivers critical engineering solutions where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition prevents rust and degradation in chemical processing, marine, and outdoor applications, while the coarse UNC thread ensures rapid assembly and superior holding power in structural steel connections, heavy machinery, and industrial equipment. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening under vibration. With its external hex drive and substantial head dimensions, this fastener accommodates high torque requirements in maintenance, construction, and manufacturing applications where reliability cannot be compromised.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit per UNC standards with 1 1/4"-7 coarse threading and right-hand direction. Manufactured to ASME B18.2.1 specifications for dimensional accuracy, it maintains 80,000 psi tensile strength and Rockwell B70 hardness. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental and safety regulations for industrial components.
