| Name: | Mammut HMS (Big Boa) |
| Category: | screw lock |
| Locking Type: | manual |
| Locks: | screw |
| Unlock Style: | gate stopped - thread runout |
| Sleeve Rotation: | 990° (unlocked) | 1440° (maximum) |
| Shape: | S-spine |
| Material: | aluminum |
| Profile: | hollow-trap |
| Nose: | notch & pin |
| Nose Guard: | none |
| Rivets: | domed |
| Gate Shield: | semi |
| Weight: | 99.7 g |
| Dimensions: | Length: 123.22 mm Width: 83.7 mm Depth (basket end): 11.5 mm Gate Opening: 24.1 mm |
| Strength Ratings: |  28 kN |  12 kN |  10 kN |
| Other Markings: | Forged: MAMMUT UK | (ratings)Ⓗ0120(ce-logo) Stamped: FAK |
| Batch Marking Location: | spine-exterior-right |
| Summary: | high-quality whitelabel HMS made by DMM |
| Description & Commentary: |