The Spring Assembly,valve, cataloged under National Stock Number 4820-01-260-8355, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-260-8355 |
| Primary Part Number | 081.238.B23AN |
| Item Name | Spring Assembly,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL SPRING PER QQ-W-428 1,BRASS SPRING HOLDER PER QQ-B-626 2,FREE LG OF SPRING 1.688 IN.,OD SPRING 0.938 IN.,WIRE SIZE 0.072 IN.,PRESSURE RANGE 5-10 PSI,OD UPPER HOLDER TO SUIT OD SPRING,CENTER HOLE 0.219 IN.,0.250 IN. HIGH W/0.125 IN. FLANGE,LOWER SPRING HOLDER 1.000 IN. DIA. ON FLANGED END,FLANGE 0.125 IN. THK.,CENTER HOLE 0.250-20 THDS,O/A THICKNESS 0.250 IN. IN |
| 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 |
|---|---|
| 081.238.B23AN PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NMP-125PC7,10,13 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| NMP-125 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 081.238.B23AN | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP-125 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-125PC7,10,13 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 081.238.B23AN | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 3,237,425 | D/9 Drawing number reference only Osteo Ag |
| 3,237,425 PC7,10,13 | 5/9 Secondary reference Osteo Ag |
| NMP-125PC7,10,13 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-260-8355 is a Spring Assembly,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-260-8355 has 2 manufacturer part numbers on file: 081.238.B23AN (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP-125PC7,10,13 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-261-6804. Verify interchangeability with system specifications before substitution.
Key specifications for 081.238.B23AN: General Characteristics Item Description: STEEL SPRING PER QQ-W-428 1,BRASS SPRING HOLDER PER QQ-B-626 2,FREE LG OF SPRING 1.688 IN.,OD SPRING 0.938 IN.,WIRE SIZE 0.072 IN.,PRESSURE RANGE 5-10 PSI,OD UPPER HOLDER TO SUIT OD SPRING,CENTER HOLE 0.219 IN.,0.250 IN. HIGH W/0.125 IN. FLANGE,LOWER SPRING HOLDER 1.000 IN. DIA. ON FLANGED END,FLANGE 0.125 IN. THK.,CENTER HOLE 0.250-20 THDS,O/A THICKNESS 0.250 IN. IN; End Item Identification: 75954,NMP-125,RELIEF VALVE 0.500 IN. 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.