The Valve,relay,air Pressure, cataloged under National Stock Number 2530-01-478-4176, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Windward Enterprises, Llc. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2530-01-478-4176 |
| Primary Part Number | WHMB300571AA |
| Item Name | Valve,relay,air Pressure |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Windward Enterprises, Llc |
| Status | ACTIVE |
| First End Thread Series Designator | NPTF |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | MULTIPLE CIONNECTION |
| Third End Relationship with Preceding Ends | IDENTICAL WITH SECOND END |
| Second End Thread Series Designator | NPTF |
| Second End Nominal Pipe Size Accommodated | 0.375 INCHES IN |
| Third End Nominal Pipe Size Accommodated | 0.375 INCHES IN |
| End Connection Quantity | 4 |
| Second End Thread Direction | RIGHT-HAND |
| First End Connection Type | THREADED INTERNAL PIPE |
| Fourth End Nominal Pipe Size Accommodated | 0.375 INCHES IN |
| Fourth End Relationship with Preceding Ends | IDENTICAL WITH SECOND END |
| First End Nominal Pipe Size Accommodated | 0.500 INCHES IN |
| Media for Which Designed | AIR |
| Second End Connection Type | THREADED INTERNAL PIPE |
| First End Nominal Thread Size | 0.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WHMB300571AA PRIMARY | Windward Enterprises, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2530014784176 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| WHMB400211HA | 5/9 Secondary reference Windward Enterprises, Llc |
NSN 2530-01-478-4176 is a Valve,relay,air Pressure, manufactured by Windward Enterprises, Llc, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-478-4176 has 1 manufacturer part number on file: WHMB300571AA (Windward Enterprises, Llc).
Key specifications for WHMB300571AA: First End Thread Series Designator: NPTF; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Body Style: MULTIPLE CIONNECTION. 17 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.