The Cup,hydraulic Brake Cylinder, cataloged under National Stock Number 2530-00-780-4898, 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 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 2530-00-780-4898 |
| Item Name | Cup,hydraulic Brake Cylinder |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Status | ACTIVE |
| Feathered Lip Feature | NOT INCLUDED |
| Largest Outside Diameter | 1.125 INCHES NOMINAL IN |
| Projection Length | 0.031 INCHES NOMINAL IN |
| Outer Periphery Base Groove | NOT INCLUDED |
| Mounting Method | CENTER HOLE |
| Mounting Hole Diameter | 0.250 INCHES NOMINAL IN |
| Sealing Lip Length | 0.250 INCHES NOMINAL IN |
| Size Designator | 1-1/8 |
| Base Outside Diameter | 1.125 INCHES NOMINAL IN |
| Base Inside Projection | INCLUDED |
| Base Thickness | 0.062 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| Thru-Hole Length | 0.062 INCHES NOMINAL IN |
| Cup Protector | NOT INCLUDED |
| 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 |
|---|---|
| A11053 | 3/9 Design control — primary reference American Laundry Machinery Inc |
| 1047851 | C/1 Advisory reference — outside the item-of-supply concept American Laundry Machinery Inc |
NSN 2530-00-780-4898 is a Cup,hydraulic Brake Cylinder, 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): 2940-01-567-4575, 8455-01-600-1995, 8455-01-600-1996. Verify interchangeability with system specifications before substitution.
Key specifications for 2530-00-780-4898: Feathered Lip Feature: NOT INCLUDED; Largest Outside Diameter: 1.125 INCHES NOMINAL IN; Projection Length: 0.031 INCHES NOMINAL IN; Outer Periphery Base Groove: NOT INCLUDED. 14 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.