The Cup,hydraulic Brake Cylinder, cataloged under National Stock Number 2530-00-741-0840, 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 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2530-00-741-0840 |
| Primary Part Number | 47547 |
| Item Name | Cup,hydraulic Brake Cylinder |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. |
| Status | ACTIVE |
| Feathered Lip Feature | INCLUDED |
| FSC Application Data | VEHICULAR BRAKE CYLINDER |
| Tapered Hole Minor Diameter | 0.690 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN |
| Largest Outside Diameter | 1.1075 INCHES MINIMUM AND 1.1275 INCHES MAXIMUM IN |
| Outer Periphery Base Groove | NOT INCLUDED |
| Mounting Method | CENTER HOLE |
| Material Document and Classification | ES0216, BENDIX PRODUCTS DIV, BENDIX AVIATION CORP MFR REF SINGLE MATERIAL RESPONSE |
| Sealing Lip Length | 0.188 INCHES NOMINAL IN |
| Tapered Hole Major Diameter | 0.721 INCHES MINIMUM AND 0.731 INCHES MAXIMUM IN |
| Base Outside Diameter | 1.0126 INCHES MINIMUM AND 1.0325 INCHES MAXIMUM IN |
| Base Inside Projection | NOT INCLUDED |
| Base Thickness | 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| Angle in Deg | 24.0 |
| Thru-Hole Length | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM 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 |
| Part Number | Manufacturer |
|---|---|
| 47547 | Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA) |
| 7410840 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 2272525 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 374272 | 3/9 Design control — primary reference Bendix Corp the Brake and Steering Div |
| 2272525 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 81622R1 | 5/2 Secondary reference U.S. Government activity |
NSN 2530-00-741-0840 is a Cup,hydraulic Brake Cylinder, manufactured by Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp., classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-741-0840 has 3 manufacturer part numbers on file: 47547 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.), 7410840 (U S Army Tank Automotive Command Amsta-Im-Mm), 2272525 (General Motors Llc Dba General Motors Llc).
2 possible matches (shared part number, not a government interchangeability claim): 6625-01-020-6302, 4730-01-108-2375. Verify interchangeability with system specifications before substitution.
Key specifications for 47547: Feathered Lip Feature: INCLUDED; FSC Application Data: VEHICULAR BRAKE CYLINDER; Tapered Hole Minor Diameter: 0.690 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN; Largest Outside Diameter: 1.1075 INCHES MINIMUM AND 1.1275 INCHES MAXIMUM IN. 16 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.