The Cylinder,hydraulic Brake,wheel, cataloged under National Stock Number 2530-01-258-2783, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-01-258-2783 |
| Item Name | Cylinder,hydraulic Brake,wheel |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Status | ACTIVE |
| Mounting Facility Thread Class | 2B |
| Design Characteristics | DOUBLE ACTING SINGLE CYLINDER |
| Mounting Provision Arrangement Style | THREE HOLE TRIANGULAR |
| Mounting Facility Thread Quantity Per Inch | 24 |
| Bore Type | STRAIGHT |
| Mounting Facility Thread Diameter | 0.375 INCHES NOMINAL IN |
| Mounting Facility Thread Series Designator | UNEF |
| Mounting Facility Thread Direction | RIGHT-HAND |
| Mounting Provision | THREADED MOUNTING HOLES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 33863 | 3/9 Design control — primary reference Allied Automotive Allied Aftermarket Div |
NSN 2530-01-258-2783 is a Cylinder,hydraulic Brake,wheel, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-555-5018, 4920-01-583-6616, 3460-01-683-1886. Verify interchangeability with system specifications before substitution.
Key specifications for 2530-01-258-2783: Mounting Facility Thread Class: 2B; Design Characteristics: DOUBLE ACTING SINGLE CYLINDER; Mounting Provision Arrangement Style: THREE HOLE TRIANGULAR; Mounting Facility Thread Quantity Per Inch: 24. 9 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.