The Boots,divers', cataloged under National Stock Number 4220-01-600-2106, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Otb Footwear Llc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-600-2106 |
| Primary Part Number | 221MBK-SIZE 13 |
| Item Name | Boots,divers' |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Otb Footwear Llc |
| Status | ACTIVE |
| Size | 13 |
| Height | 8.0 INCHES IN |
| Color | BLACK OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 221MBK-SIZE 13 PRIMARY | Otb Footwear Llc (USA) |
| MB11024 | Apollo Australia Pty Ltd Div Apollo Australia Pty Ltd (AUS) |
NSN 4220-01-600-2106 is a Boots,divers', manufactured by Otb Footwear Llc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-600-2106 has 2 manufacturer part numbers on file: 221MBK-SIZE 13 (Otb Footwear Llc), MB11024 (Apollo Australia Pty Ltd Div Apollo Australia Pty Ltd).
Key specifications for 221MBK-SIZE 13: Size: 13; Height: 8.0 INCHES IN; Color: BLACK OVERALL; Special Features: SECOND GENERATION WATER BASED BOOT DESIGNED FOR UNDERWATER AND ABOVE WATER OPERATIONS; REINFORCED TOE AND HEEL HELP AID IN CLIMBING MANEUVERS; RETICULATED FOAM USED FOR ALL UPPER PADDING WILL NOT ABSORB WATER UNDER ANY CIRCUMSTANCES; SEA, AIR AND LAND FOOTBED AIDS IN WATER DRAINAGE AS WELL AS BREATHABILITY FOR UNDERSURPASSED FOOT HEALTH IN A WIDE VARIETY OF CONDITIONS; SEAL FOOTBED HAS A PATENTED REMOVABLE SHANK THAT ALLOWS THE USER TO CUSTOMIZE THE FIT FOR ANY CONDITIONS WET OR DRY. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.