Overview
The 18-8SS hex head cap screw 7/16-14 x 3″ is a fully threaded stainless steel fastener built to ASME B18.2.1 specifications. Manufactured from 304 stainless steel (containing 18% chromium and 8% nickel), this screw delivers dependable corrosion resistance and strength for demanding industrial applications. The full threading along the entire shank length and external hex drive make it ideal for applications requiring maximum engagement and secure clamping.
Key Features
- Fully threaded design — thread coverage along entire length for maximum holding power
- 304 stainless steel (18-8) — excellent corrosion and stain resistance in harsh environments
- External hex head — compatible with standard hex wrenches and sockets
- ASME B18.2.1 compliant — meets industry dimensional and performance standards
- Coarse thread (UNC) — 14 threads per inch for quick installation and removal
- 100,000 psi tensile strength — provides reliable load-bearing capability
Technical Specifications
- Material: Stainless Steel 304 (18% chromium, 8% nickel)
- Thread Size: 7/16″-14 UNC (Coarse)
- Length: 3 inches (measured from under the head)
- Thread Coverage: Fully Threaded (FT)
- Head Style: Hex (external drive)
- Head Height: 9/32 inch
- Tensile Strength: 100,000 psi
- Threads Per Inch (TPI): 14
- Standard: ASME B18.2.1
- Finish: Plain stainless (no additional plating)
Typical Applications
- Chemical processing and corrosive environments
- Marine and saltwater installations
- Food processing and pharmaceutical equipment
- HVAC and refrigeration systems
- Aerospace and aircraft assembly
- General industrial machinery requiring stainless fasteners
Compatibility & Replacements
Compatible With
- Standard metric and SAE hex wrenches (11/16″ wrench size for this head)
- Impact drivers and power tools
- Any application requiring 7/16″-14 UNC threaded holes
- Stainless steel nuts and washers (7/16″ size)
Replaces / Drop-In Replacement For
- Generic unbranded 7/16-14 x 3″ fully threaded hex cap screws
- Any ASME B18.2.1 compliant 7/16-14 x 3″ fully threaded hex cap screw
- Equivalent 304 stainless steel hex cap screws from major fastener suppliers
Works With
- Stainless steel 18-8 nuts (7/16″-14)
- Flat and lock washers (7/16″ I.D.)
- SAE and metric socket sets
- Standard assembly tools and fixtures
