Overview
The 18-8 stainless steel hex head cap fully threaded 7/16-14″ x 3″ screw is a premium fastening solution for applications demanding superior corrosion resistance and durability. This box contains 10 units of fully threaded hex cap screws, each manufactured to standard specification with a polished stainless steel finish. The 18-8 grade provides excellent tensile strength and withstands exposure to moisture, chemicals, and saltwater environments without degradation.
Key Features
- 18-8 stainless steel construction for superior corrosion and rust resistance
- Fully threaded shaft for maximum grip and holding power along entire length
- Hex head design enables use with standard wrenches, sockets, and impact drivers
- Coarse thread (14 TPI) for fast driving and strong engagement
- Precision-machined flat bearing surface for secure seating
Technical Specifications
- Diameter: 7/16″ (0.4375″)
- Length: 3″
- Thread Pitch: 14 TPI (Unified Coarse)
- Thread Type: Fully Threaded
- Head Style: Hex (Six-sided)
- Material: 18-8 Austenitic Stainless Steel
- Finish: Polished Stainless Steel
- Quantity per Box: 10
Typical Applications
- Marine and offshore construction where saltwater exposure is common
- Chemical processing equipment and storage tanks
- Food and beverage processing facilities
- HVAC and plumbing systems in corrosive environments
- Industrial machinery assembly and maintenance
- Infrastructure and structural assembly in humid climates
Compatibility & Replacements
Compatible With
- Standard 7/16″ hex nuts and washers (stainless steel recommended)
- 7/16″ bolt holes drilled to Unified Coarse (UNC) specification
- All standard wrenches and socket sets (metric or SAE)
- Impact drivers and pneumatic/electric fastening tools
Replaces / Drop-In Replacement For
- Any equivalent 7/16″-14 UNC x 3″ fully threaded hex cap screw in 18-8 stainless steel
- Functionally interchangeable with other 18-8 hex cap screws of identical thread and length specification
- May upgrade from zinc-plated or galvanized alternatives in corrosion-critical applications
Works With
- 18-8 stainless steel nuts and flat/lock washers
- Standard mechanical tools: wrenches, sockets, hex keys, ratchets
- Pneumatic and electric impact drivers
- Thread-locking compounds (anaerobic type recommended)












