The Side Block Assembly, cataloged under National Stock Number 4220-01-237-3261, 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 Kirby Morgan Dive Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Side Block Assembly |
| FSC / FSG | 4220 — Marine Lifesaving and Diving Equipment (FSG 42) |
| Manufacturers | Kirby Morgan Dive Systems Inc (CAGE 58366) |
| Parameter | Value |
|---|---|
| NSN | 4220-01-237-3261 |
| Primary Part Number | 505-024 |
| Item Name | Side Block Assembly |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 505-024 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 17-046B | 5/9 Secondary reference Kirby Morgan Dive Systems Inc |
NSN 4220-01-237-3261 is a Side Block Assembly, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-237-3261 has 1 manufacturer part number on file: 505-024 (Kirby Morgan Dive Systems Inc).
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.