The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-135-6580, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-135-6580 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | QUALITY ASSURANCE TESTED FOR SUBMARINE SAFETY PROGRAM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| SS845-2109878 PIECE 1,4 | 3/1 Design control — primary reference U.S. Government activity |
| 2640-413X3 PIECE 1,4QA | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| SS845-2109878 PIECE 1,4QA | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 2640-413X3 PIECE 1,4 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-135-6580 is a Parts Kit,ball Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-136-2468. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-135-6580: Reference Number Differentiating Characteristics: QUALITY ASSURANCE TESTED FOR SUBMARINE SAFETY PROGRAM. 1 specification is 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 4820-01-135-6580 has DEMIL Code B. 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.