The Valve Assembly,mechanical Float, cataloged under National Stock Number 4820-01-281-0252, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-281-0252 |
| Primary Part Number | 6740-7637 |
| Item Name | Valve Assembly,mechanical Float |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF: 1 EA CHAMBER-LIQUID LEVEL,CAGEC 05172,P/N 1030-0010; 1 EA VALVE-MECHANICAL FLOAT 0.750 IN.,CAGEC 05172,P/N 6740-7638; 1 EA FITTING-REDUCER,MATL: STAINLESS HIGH PRESSURE,P/N 2 IN. X 3/4 IN.; 1 EA NIPPLE,MATL: BRASS,0.750 IN. N.P.T.; ADDITIONAL COMPONENTS USED PER SK56549 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 |
|---|---|
| 6740-7637 PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| 6740-7637 | 5/9 Secondary reference Aai Corporation Div Mississippi Operations |
NSN 4820-01-281-0252 is a Valve Assembly,mechanical Float, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-281-0252 has 1 manufacturer part number on file: 6740-7637 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for 6740-7637: General Characteristics Item Description: CONSISTS OF: 1 EA CHAMBER-LIQUID LEVEL,CAGEC 05172,P/N 1030-0010; 1 EA VALVE-MECHANICAL FLOAT 0.750 IN.,CAGEC 05172,P/N 6740-7638; 1 EA FITTING-REDUCER,MATL: STAINLESS HIGH PRESSURE,P/N 2 IN. X 3/4 IN.; 1 EA NIPPLE,MATL: BRASS,0.750 IN. N.P.T.; ADDITIONAL COMPONENTS USED PER SK56549 IN; End Item Identification: HYDRAULIC CART,TVA ASSEMBLY. 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.