The Valve,butterfly, cataloged under National Stock Number 4810-01-021-8373, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 8 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-021-8373 |
| Primary Part Number | E46D40 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Flange Shape | ROUND FIRST END |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU |
| Bonnet Type | INSIDE SPRING |
| Mounting Facility | CLAMP |
| Bonnet Attachment Method | BOLTED |
| Face to Face Distance | 4.000 INCHES IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| E46D40 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 1128SCEC405-7 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 1128SCEC405-7 | 7/9 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 4810-01-021-8373 is a Valve,butterfly, manufactured by Grimes Aerospace Company, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-021-8373 has 1 manufacturer part number on file: E46D40 (Grimes Aerospace Company).
Key specifications for E46D40: Flange Shape: ROUND FIRST END; Connection Type: FLANGE FIRST END; Style Designator: STRAIGHT THRU; Bonnet Type: INSIDE SPRING. 8 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 4810-01-021-8373 has DEMIL Code Q. 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.