| Code | Thread × Length | Material & Finish |
|---|---|---|
| D0311-1415R | 1/4″ × 15 mm | Iron, Iridescent |
| D0311-1417R | 1/4″ × 17 mm | Iron, Iridescent |
| D0311-1420R | 1/4″ × 20 mm | Iron, Iridescent |
| D0311-51613R | 5/16″ × 13 mm | Iron, Iridescent |
| D0311-51615R | 5/16″ × 15 mm | Iron, Iridescent |
| D0311-51617R | 5/16″ × 17 mm | Iron, Iridescent |
| D0311-51620R | 5/16″ × 20 mm | Iron, Iridescent |
| D0311-51625R | 5/16″ × 25 mm | Iron, Iridescent |
| D0311-M613 | M6 × 13 mm | Iron, Iridescent |
| D0311-M617 | M6 × 17 mm | Iron, Iridescent |
| D0311-M625 | M6 × 25 mm | Iron, Iridescent |
| D0311-M820 | M8 × 20 mm | Iron, Iridescent |
※ All variants are iron with iridescent plating; code numbers indicate thread size and length.
Applications
- Furniture structure and fastening assembly
- Internal/external thread nut connection systems
- Reliable corrosion resistance and strength




