The Guide,valve Stem, cataloged under National Stock Number 4820-01-200-9474, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydrasearch Company, Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-200-9474 |
| Primary Part Number | 051601ZZ |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Material | PLASTIC POLYAMIDE NYLON |
| 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 |
|---|---|
| 051601ZZ PRIMARY | Hydrasearch Company, Llc (USA) |
| 051350 | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| C-5135 | D/9 Drawing number reference only Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging |
| 05160-1-ZZ | 5/9 Secondary reference Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging |
| PL-1444 ITEM 6 | 5/9 Secondary reference Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging |
| 005160 | C/1 Advisory reference — outside the item-of-supply concept Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging |
| PL-1444 | D/9 Drawing number reference only Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging |
NSN 4820-01-200-9474 is a Guide,valve Stem, manufactured by Hydrasearch Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-200-9474 has 2 manufacturer part numbers on file: 051601ZZ (Hydrasearch Company, Llc), 051350 (Hydrasearch Company, Llc).
1 possible match (shared part number, not a government interchangeability claim): 6520-01-532-5235. Verify interchangeability with system specifications before substitution.
Key specifications for 051601ZZ: Special Features: 150 TO 6000 PSI SERVICE WP; FOR 1/2 IN. IPS RELIEF VALVE IN; Material: PLASTIC POLYAMIDE NYLON. 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.
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.