The Stem,fluid Valve, cataloged under National Stock Number 4820-01-217-4926, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-217-4926 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| NMP114 PIECE 12,18A,17,19 | 3/9 Design control — primary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP 114/PCS 12,18A,17 & 19 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| S4824-H-3129334PC12,18A,17,19 | 5/1 Secondary reference U.S. Government activity |
| S4824-3129334 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-217-4926 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-251-7771. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-217-4926: Criticality Code Justification: ZZZY; Special Features: DIMENSIONS FOR THE STEM ARE:0.750 IN MAJOR DIA,0.375 IN TOP END DIA,0.344 IN BOTTOM END DIA,11.156 IN O/A LG,0.625-18UNF-2A THREADS; DISC DIMENSIONS ARE:2.865 IN NOM O.D.,1.996 IN NOM I.D.,2.060 IN LG; DISC NUT HAS 0.375 IN THRU HOLE BY 0.500 IN LG,0.625-18UNF-2A THREADS BY 0.312 IN LG,0.750 IN ACROSS FLATS A; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 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.
NSN 4820-01-217-4926 has DEMIL Code F. 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.