The Vent Unit,relief, cataloged under National Stock Number 4930-01-556-5405, is classified within Federal Supply Class 4930 (Lubrication and Fuel Dispensing Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Modine Manufacturing Co. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4930-01-556-5405 |
| Primary Part Number | 3S051987B0002 |
| Item Name | Vent Unit,relief |
| FSC / FSG | 4930 / 49 — Lubrication and Fuel Dispensing Equipment |
| Manufacturer | Modine Manufacturing Co |
| Status | ACTIVE |
| 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 |
|---|---|
| 3S051987B0002 PRIMARY | Modine Manufacturing Co (USA) |
| 2591763C2 | Nd Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 2591763C1 | 5/9 Secondary reference Nd Defense Llc |
NSN 4930-01-556-5405 is a Vent Unit,relief, manufactured by Modine Manufacturing Co, classified under FSC 4930, Lubrication and Fuel Dispensing Equipment. Status: active.
NSN 4930-01-556-5405 has 2 manufacturer part numbers on file: 3S051987B0002 (Modine Manufacturing Co), 2591763C2 (Nd Defense Llc).
Key specifications for 3S051987B0002: Part Name Assigned by Controlling Agency: VENT, ASSY; End Item Identification: MRAP - UNIQUE NSN - MAXXPRO CAT I. 0 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.