The Idler Assembly,track Roller, cataloged under National Stock Number 2530-01-552-0899, 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 Deere & Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2530-01-552-0899 |
| Primary Part Number | AT305809 |
| Item Name | Idler Assembly,track Roller |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Deere & Co |
| Status | ACTIVE |
| Overall Diameter | 664.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| AT305809 | Rdo Equipment Rdo Equipment Pty Ltd (AUS) |
| AT305809 PRIMARY | Deere & Co (USA) |
| Reference | Meaning |
|---|---|
| AT305809 | 5/9 Secondary reference Hitachi Construction Machinery Aust Australia Pty Ltd Hitachi Construction Machinery |
| AT305809 | 5/9 Secondary reference Rdo Equipment Pty Ltd |
NSN 2530-01-552-0899 is a Idler Assembly,track Roller, manufactured by Deere & Co, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-552-0899 has 2 manufacturer part numbers on file: AT305809 (Rdo Equipment Rdo Equipment Pty Ltd), AT305809 (Deere & Co).
Key specifications for AT305809: Overall Diameter: 664.0 MILLIMETERS NOMINAL MM; Special Features: IDLER DIA. 664.0MM; TREAD DIA 620.0MM; INSIDE SPREAD 95.0MM; OUTSIDE SPREAD 190.0MM; SHAFT DIAMETER 114.3 MM; End Item Identification: 750IJ/850J CRAWLER DOZER. 1 specification is 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.