The Stem,needle Valve, cataloged under National Stock Number 4820-01-233-6172, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-233-6172 |
| Primary Part Number | 20527C1 |
| Item Name | Stem,needle Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING |
| Reference Number Differentiating Characteristics | REQUIRES SPECIAL CLEANING AND PACKAGING FOR OXYGEN/NITROGEN SERVICE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 20527C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| N-880 SH1 PC2C1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| N-880 SH1 PC2 | 5/1 Secondary reference Grove Valve Operations |
| N-880 PIECE 2 L1 | 5/1 Secondary reference Grove Valve Operations |
| N-880 PIECE 2 L1C1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 20527 | 3/1 Design control — primary reference Grove Valve Operations |
NSN 4820-01-233-6172 is a Stem,needle Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-233-6172 has 2 manufacturer part numbers on file: 20527C1 (Naval Inventory Control Point Mechanicsburg), N-880 SH1 PC2C1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-308-6716. Verify interchangeability with system specifications before substitution.
Key specifications for 20527C1: Overall Length: 0.938 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING; Reference Number Differentiating Characteristics: REQUIRES SPECIAL CLEANING AND PACKAGING FOR OXYGEN/NITROGEN SERVICE. 2 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.