The Stem and Seat Assembly, cataloged under National Stock Number 4820-01-081-5137, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-081-5137 |
| Primary Part Number | 810-1385623-051PC3-4-5-6-7 |
| Item Name | Stem and Seat Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF 1 EA STEM PC3; 1 EA SEAT RING PC4; 1 EA DISK HOLDER PC5; 1 EA DISK PC6; 6 EA SCREW PC7; 1 EA WASHER PC8; 1 EA STEM RING PC9; 1 EA DISK PIN PC18 |
| 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 |
|---|---|
| 810-1385623-051PC3-4-5-6-7 PRIMARY | Naval Sea Systems Command (USA) |
| 810-1385623-051PC3-8-9-18 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5000-S4824-1385623 | 5/9 Secondary reference Naval Sea Systems Command |
| 1385623-051-3,5 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-081-5137 is a Stem and Seat Assembly, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-081-5137 has 2 manufacturer part numbers on file: 810-1385623-051PC3-4-5-6-7 (Naval Sea Systems Command), 810-1385623-051PC3-8-9-18 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-081-5315. Verify interchangeability with system specifications before substitution.
Key specifications for 810-1385623-051PC3-4-5-6-7: General Characteristics Item Description: CONSISTS OF 1 EA STEM PC3; 1 EA SEAT RING PC4; 1 EA DISK HOLDER PC5; 1 EA DISK PC6; 6 EA SCREW PC7; 1 EA WASHER PC8; 1 EA STEM RING PC9; 1 EA DISK PIN PC18. 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.