The Valve,solenoid, cataloged under National Stock Number 4810-01-186-7977, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Westfield Hydraulics Inc Dba Westfield Hydraulics Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Valve,solenoid |
| FSC / FSG | 4810 — Valves, Powered (FSG 48) |
| Manufacturers | Westfield Hydraulics Inc Dba Westfield Hydraulics Inc (CAGE 53730) |
| Parameter | Value |
|---|---|
| NSN | 4810-01-186-7977 |
| Primary Part Number | 550450 |
| Item Name | Valve,solenoid |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Westfield Hydraulics Inc Dba Westfield Hydraulics Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 550450 PRIMARY | Westfield Hydraulics Inc Dba Westfield Hydraulics Inc (USA) |
| Reference | Meaning |
|---|---|
| 3888134-1 | 5/9 Secondary reference U.S. Government activity |
| 3888134-4 | 3/2 Design control — primary reference U.S. Government activity |
| 3888134 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4810-01-186-7977 is a Valve,solenoid, manufactured by Westfield Hydraulics Inc Dba Westfield Hydraulics Inc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-186-7977 has 1 manufacturer part number on file: 550450 (Westfield Hydraulics Inc Dba Westfield Hydraulics Inc).
1 possible match (shared part number, not a government interchangeability claim): 6750-01-427-5335. Verify interchangeability with system specifications before substitution.
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 4810-01-186-7977 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.