| Name: | SMC D Locking v1 |
| Category: | screw lock |
| Locking Type: | manual |
| Locks: | screw |
| Unlock Style: | nose stopped - longitudinal interferance |
| Sleeve Rotation: | 2790° (unlocked) | 3600° (maximum) |
| Shape: | D |
| Material: | aluminum |
| Profile: | round |
| Nose: | notch & pin |
| Nose Guard: | none |
| Rivets: | pin: recessed |
| Gate Shield: | none |
| Weight: | 66 g |
| Dimensions: | Length: 105.84 mm Width: 54.4 mm Rope Bearing Depth: 11.05 mm Gate Opening: 14.6 mm |
| Other Markings: | Stamped: SMC Engraved: W.B. |
| Summary: | vintage screw locker from an era when lockers were a luxury |
| Description & Commentary: |