Overview
The S30400 hex head cap screw is a fully threaded fastener measuring 7/16″-14 x 3″ in diameter and length. Manufactured from 18-8 stainless steel (UNS designation S30400), this screw features a hexagonal head designed to be driven by a wrench or socket. When fully threaded, hex cap screws are also referred to as tap bolts and are widely used in industrial assembly, machinery mounting, and general maintenance applications requiring corrosion resistance.
Key Features
- Full thread design from head to tip (tap bolt configuration)
- 18-8 stainless steel material for superior corrosion resistance
- Hex head design accepts standard wrench or socket tools
- Thread pitch: 14 TPI (7/16″-14 UNC)
- Industrial-grade fastener per ANSI/ASTM standards
- Supplied as a lot of 10 units
Technical Specifications
- Diameter: 7/16″ (0.4375″)
- Thread pitch: 14 threads per inch (TPI)
- Length: 3″ (from under head)
- Material: 18-8 Stainless Steel (UNS S30400 / 304 SS)
- Thread form: Unified National Coarse (UNC) full thread
- Head style: Hexagonal cap head
- Finish: Passivated stainless steel
- Quantity: 10 pieces per lot
Typical Applications
- Marine and coastal environment installations where salt corrosion is a concern
- Food processing and beverage equipment assembly
- HVAC and mechanical systems
- Chemical and pharmaceutical facility construction
- Outdoor equipment and structural fastening
- General industrial machinery mounting and assembly
Compatibility & Replacements
Compatible With
- Standard 11/16″ hex socket wrenches and sockets
- Manual and pneumatic socket drivers
- Impact drivers and wrench-style application tools
- Any fastening application requiring 7/16″-14 UNC threaded holes
Replaces / Drop-In Replacement For
- Any standard 7/16″-14 x 3″ hex head cap screw
- Equivalent full-thread hex bolts in 18-8 stainless steel
- THE S30400 from other inventory sources
Works With
- Threaded holes in various metals and materials (aluminum, steel, stainless)
- Tapped inserts and threaded fastening systems
- Lock washers and standard fastening hardware
- Any application using metric or inch-based bolt patterns
