S-94288A218 5/16"-18 x 1 1/2" Extreme-Strength Stainless Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 450 stainless steel construction, ideal for harsh industrial environments
• Superior load-bearing capacity from 170,000 psi tensile strength for heavy-duty applications
• Enhanced durability with Rockwell C38 hardness to withstand wear and repeated use
• Secure anti-loosening performance thanks to the integrated flange design
• Quick installation with UNC coarse threading and external hex drive for efficient assembly
• Reliable thread engagement ensured by Class 2A fit for consistent fastening quality
• Optimized thread length with partial threading for precise grip in various material thicknesses

Professional Applications & Engineering Value

Engineered for demanding industrial and construction applications, these 450 stainless steel hex head screws deliver exceptional performance where reliability is critical. The UNC coarse threading ensures rapid installation in tough materials, while the integrated flange eliminates the need for separate washers, providing superior load distribution and vibration resistance. With 170,000 psi tensile strength and Rockwell C38 hardness, these partially threaded screws maintain structural integrity under extreme stress, making them ideal for machinery assembly, structural frameworks, and heavy equipment where corrosion resistance and long-term durability are essential.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 2A thread fit for consistent performance. Features 5/16"-18 UNC coarse threading with right-hand direction and 1" minimum thread length. Complies with standard industrial specifications for dimensional accuracy and material properties, suitable for applications requiring reliable external hex drive fasteners with 5/8" flange diameter.