S-92655A465 5/8"-11 x 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
- Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Superior mechanical strength delivering 75,000 psi tensile strength for heavy-duty load-bearing applications
- Precise thread engagement with Class 2A fit and UNC coarse threading for reliable assembly and vibration resistance
- Optimized load distribution through 2½" grip length and partial threading design
- Enhanced installation efficiency with external hex drive and 1-1/16" head width for secure tool engagement
- Certified material quality meeting ASTM Grade B8 specifications for consistent performance
- Durable surface hardness rated Rockwell B100 to maintain thread integrity under repeated use
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 5/8"-11 UNC hex head screws solve critical fastening challenges in chemical processing, marine equipment, and structural assemblies. The 18-8 stainless steel composition provides inherent corrosion resistance, eliminating premature failure in moisture-rich environments. The coarse UNC threading ensures rapid installation and superior vibration resistance, while the partial threading design concentrates stress away from shear planes. With ASTM Grade B8 certification and 75,000 psi tensile strength, these fasteners maintain structural integrity under extreme mechanical loads, making them ideal for pressure vessels, pump systems, and high-temperature applications where reliability is paramount.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with Class 2A thread fit tolerance for consistent mating with standard nuts. Complies with ASTM A193 specification for alloy-steel and stainless steel bolting materials in high-temperature service. Threading conforms to UNC (Unified National Coarse) standards with right-hand orientation. The 4" overall length with 1½" thread length and 2½" grip length provides optimal clamping force distribution. Material certification includes ASTM Grade B8 requirements for chemical composition and mechanical properties.
