The Cup,hydraulic Brake Cylinder, cataloged under National Stock Number 2530-00-628-0905, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-628-0905 |
| Primary Part Number | 6280905 |
| Item Name | Cup,hydraulic Brake Cylinder |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Feathered Lip Feature | NOT INCLUDED |
| Largest Outside Diameter | 1.286 INCHES NOMINAL IN |
| Outer Periphery Base Groove | NOT INCLUDED |
| Mounting Method | CENTER HOLE |
| Material Document and Classification | -2347, MILLER RUBBER CO MFR REF SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.240 INCHES NOMINAL IN |
| Sealing Lip Length | 0.172 INCHES NOMINAL IN |
| Size Designator | 1-1/4 IN IN |
| Base Outside Diameter | 1.198 INCHES NOMINAL IN |
| Base Inside Projection | NOT INCLUDED |
| Base Thickness | 0.078 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| Thru-Hole Length | 0.281 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 |
| Part Number | Manufacturer |
|---|---|
| 6280905 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2530-00-628-0905 is a Cup,hydraulic Brake Cylinder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-00-628-0905 has 1 manufacturer part number on file: 6280905 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 6280905: Feathered Lip Feature: NOT INCLUDED; Largest Outside Diameter: 1.286 INCHES NOMINAL IN; Outer Periphery Base Groove: NOT INCLUDED; Mounting Method: CENTER HOLE. 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.