Unknown 3278 5/16-18 Weld Nut Zinc Black Lot of 25

5/16-18 weld nut set designed for permanent attachment to metal surfaces, providing a strong threaded connection point for bolts in fabrication and industrial assembly applications.
Manufacturer: Not specified
Product type: Weld nut
Thread size: 5/16"-18 UNC
Designation: 5/16-18 Weld Nut Zinc Black
Thread type: Unified National Coarse (UNC)
Material: Carbon steel (typical industrial grade)
Finish: Zinc plated with black coating (Zinc Black)
Corrosion resistance: Moderate corrosion protection due to zinc coating
Nut type: Weld nut with projection points
Mounting method: Spot welding / projection welding to metal surfaces
Base design: Flat base with weld projections for secure attachment
Thread type: Internal machine thread
Quantity: Lot of 25 pieces
Package marking: “5/16-18 WELD NUT ZINC BLK”, quantity 25
Load distribution: Designed for permanent mounting in sheet metal or structural components
Application: Automotive, sheet metal fabrication, machinery assembly, industrial equipment
Installation: Requires welding equipment (projection or spot weld)
Compatibility: Suitable for use with 5/16"-18 bolts and screws
Operating temperature: Suitable for standard industrial temperature ranges
Strength: Depends on weld quality and base material
Standards: Typically aligned with ANSI/ASME fastener standards (exact specification not indicated)
Country of manufacture: Not specified
Weight: Approx. 10–20 g per nut
Additional features: Provides fixed threaded anchor point, eliminates need for tapping, suitable for repetitive assembly operations Please review pictures carefully and let us know if you have any questions!