S-92655A668 7/8"-9 x 2 1/4" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications
18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 75,000 psi tensile strength for heavy-duty load-bearing applications
- Reliable thread engagement with Class 2A fit UNC coarse threads ensuring secure fastening
- Optimized partial threading providing enhanced grip length control in critical assemblies
- Standardized external hex drive enabling high-torque installation with common tools
- Certified material quality meeting ASTM A193 Grade B8 specifications for consistent performance
- Dimensional precision with Rockwell B96 hardness maintaining structural integrity under stress
Professional Applications & Engineering Value
This 7/8"-9 UNC hex head screw delivers critical engineering solutions where corrosion resistance and structural reliability are paramount. The 18-8 Stainless Steel composition combined with ASTM A193 Grade B8 certification ensures long-term performance in chemical processing, marine equipment, and high-temperature industrial systems. The partially threaded design with coarse UNC threads provides optimal stress distribution while the external hex drive accommodates high-torque applications. These heavy-duty fasteners effectively address common failure points in structural assemblies, piping systems, and pressure vessel applications where standard fasteners would succumb to corrosion or mechanical stress.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with 2 1/4" length and 2" thread length. Features UNC coarse threads with Class 2A thread fit tolerance for reliable assembly. Complies with ASTM A193 specification requirements for Grade B8 stainless steel fasteners. The external hex head design (1 7/16" width) ensures compatibility with standard industrial tools. Material certification includes 75,000 psi tensile strength and Rockwell B96 hardness verification.
