The Vent Unit,relief, cataloged under National Stock Number 4930-01-474-8949, is classified within Federal Supply Class 4930 (Lubrication and Fuel Dispensing Equipment) of the Maintenance and Repair Shop Equipment group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Vent Unit,relief |
| FSC / FSG | 4930 — Lubrication and Fuel Dispensing Equipment (FSG 49) |
| Parameter | Value |
|---|---|
| NSN | 4930-01-474-8949 |
| Item Name | Vent Unit,relief |
| FSC / FSG | 4930 / 49 — Lubrication and Fuel Dispensing Equipment |
| 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 |
| Reference | Meaning |
|---|---|
| V2B11686-6LA | 3/2 Design control — primary reference U.S. Government activity |
| V3D10436 ITEM 4 | C/1 Advisory reference — outside the item-of-supply concept Naval Inventory Control Point Mechanicsburg |
| V3D10436 | D/9 Drawing number reference only U.S. Government activity |
| V3D10436 ITEM 4 | 5/2 Secondary reference U.S. Government activity |
NSN 4930-01-474-8949 is a Vent Unit,relief, classified under FSC 4930, Lubrication and Fuel Dispensing Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-483-1923, 4930-01-633-9527. Verify interchangeability with system specifications before substitution.
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.