The Valve Assembly,control, cataloged under National Stock Number 4820-00-674-6964, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Thomas Instrument, Incorporated. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-674-6964 |
| Primary Part Number | 5145664 |
| Item Name | Valve Assembly,control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Thomas Instrument, Incorporated |
| Status | ACTIVE |
| General Characteristics Item Description | BODY ALUMINUM ALLOY;FLOW CONTROL DEVICE PORTED.STEEL SLEEVE;LEVER OPERATED;INLET PORT THREADED INTERNAL;NPT 3/8-18LFURNISHED WITH BRASS 90.0 DEG ELBOW 3/8 MALE 37.0 DEG SEAT ANGLE;OUTLET OVAL TWO HOLE FLANGE;O/A FLANGE LG 2.125 IN.;THK 1.312 IN.;C TO C DISTANCE BETWEEN BOLT HOLES 1.406 IN.;BOLT HOLE DIA 0.344 IN.;OUTLET 0.212 IN.;LG O/A 6.212 IN.;BODY DIA 1.562 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 |
|---|---|
| 5145664 PRIMARY | Thomas Instrument, Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 6505062 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 5145664 | 3/9 Design control — primary reference Rolls-Royce Solutions America Inc |
| 6505062 | 5/9 Secondary reference General Motors Corp |
NSN 4820-00-674-6964 is a Valve Assembly,control, manufactured by Thomas Instrument, Incorporated, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-674-6964 has 1 manufacturer part number on file: 5145664 (Thomas Instrument, Incorporated).
1 possible match (shared part number, not a government interchangeability claim): 4610-00-833-0983. Verify interchangeability with system specifications before substitution.
Key specifications for 5145664: General Characteristics Item Description: BODY ALUMINUM ALLOY;FLOW CONTROL DEVICE PORTED.STEEL SLEEVE;LEVER OPERATED;INLET PORT THREADED INTERNAL;NPT 3/8-18LFURNISHED WITH BRASS 90.0 DEG ELBOW 3/8 MALE 37.0 DEG SEAT ANGLE;OUTLET OVAL TWO HOLE FLANGE;O/A FLANGE LG 2.125 IN.;THK 1.312 IN.;C TO C DISTANCE BETWEEN BOLT HOLES 1.406 IN.;BOLT HOLE DIA 0.344 IN.;OUTLET 0.212 IN.;LG O/A 6.212 IN.;BODY DIA 1.562 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.