| Name: | SMC D Locking v3 |
| Category: | screw lock |
| Locking Type: | manual |
| Locks: | screw |
| Unlock Style: | nose stopped |
| Sleeve Rotation: | 810° (unlocked) | 1890° (maximum) |
| Shape: | D |
| Material: | aluminum |
| Profile: | round |
| Nose: | notch & pin |
| Nose Guard: | none |
| Rivets: | pin: recessed |
| Gate Shield: | none |
| Weight: | 70 g |
| Dimensions: | Length: 106 mm Width: 56 mm Gate Opening: 13.5 mm |
| Other Markings: | Stamped: (SMC oval logo) |
| Summary: | budget screw locker from an era when lockers were a luxury |
| Description & Commentary: |