The Disk,valve, cataloged under National Stock Number 4820-01-115-7641, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-115-7641 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Shank Diameter | 0.610 INCHES MINIMUM AND 0.611 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| 87684-1504 | D/9 Drawing number reference only U.S. Government activity |
| 412-4678004 ITEM 13 | 5/1 Secondary reference U.S. Government activity |
| 412-4678004 ITEM 13L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 87684-1504 ITEM 13L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 87684-1504 ITEM 13 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-01-115-7641 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-140-2080, 4820-01-169-9733. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-115-7641: Shank Diameter: 0.610 INCHES MINIMUM AND 0.611 INCHES MAXIMUM IN; Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. 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.
NSN 4820-01-115-7641 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.