S-92655A618 1/2"-13 x 4 1/2" 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
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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 75,000 psi ensures reliable performance in heavy-duty applications
- Precise Class 2A thread fit guarantees smooth installation and secure fastening
- Partially threaded design with 3 1/4" grip length provides optimal clamping force distribution
- External hex drive and 7/8" head width allow for high-torque installation with standard tools
- Coarse UNC thread pattern enables quick assembly and superior vibration resistance
- ASTM A193 and Grade B8 compliance ensures material quality and performance reliability
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 1/2"-13 UNC hex head screws deliver exceptional performance where corrosion resistance and structural integrity are critical. The 18-8 stainless steel composition provides superior protection against rust and chemical exposure, making them ideal for chemical processing, marine environments, and food processing equipment. The partially threaded design with substantial grip length ensures maximum clamping force where it's needed most, preventing joint loosening under vibration and dynamic loads. With ASTM Grade B8 certification and 75,000 psi tensile strength, these heavy-duty fasteners maintain structural stability in high-pressure systems, pipeline flanges, and structural steel connections where failure is not an option.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with UNC coarse threading (1/2"-13) and right-hand thread direction. Manufacturing complies with ASTM A193 specifications for pressure vessel and high-temperature service applications. The fastener meets ASTM Grade B8 material requirements with Rockwell B100 hardness and dimensional accuracy per inch system standards. The partially threaded configuration provides 1 1/4" thread length and 3 1/4" grip length on a total 4 1/2" length, ensuring proper engagement and load distribution in assembled components.
