The Stem and Disc Assem, cataloged under National Stock Number 4820-01-555-9574, 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1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-555-9574 |
| Item Name | Stem and Disc Assem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Supplementary Features | COMPONENT QUANTITY 4. FURNISHED ITEMS 1 EA. DISC WASHER, 1 EA. DISC STEM RING, 1 EA. STEM AND 1 EA. DISC (THROTTLE) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 803-2177525-S3XX-81 | 3/2 Design control — primary reference U.S. Government activity |
| 2177525 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-555-9574 is a Stem and Disc Assem, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-555-9574: Supplementary Features: COMPONENT QUANTITY 4. FURNISHED ITEMS 1 EA. DISC WASHER, 1 EA. DISC STEM RING, 1 EA. STEM AND 1 EA. DISC (THROTTLE); Special Features: COMPLETE ITEM NAME IS STEM AND DISC ASSEMBLY VALVE; Part Name Assigned by Controlling Agency: STEM DISK ASSEMBLY (THROTTLE) FOR 0.500 INCH VALVE IN. 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.