The Sleeve,input Shaft,transmission, cataloged under National Stock Number 2520-00-508-4664, is classified within Federal Supply Class 2520 (Vehicular Power Transmission 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 2 specifications, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-00-508-4664 |
| Primary Part Number | 7520989 |
| Item Name | Sleeve,input Shaft,transmission |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| FSC Application Data | TRANSMISSION,MECHANICAL,VEHICULAR |
| General Characteristics Item Description | IRON CASTING,QQ-I-652,CLASS 30,CYLINDRICAL SHAPE;4.344 IN. LG;1.871 IN. OD; 1.509 IN. ID;1 END FLANGED,4.873 IN. OD,0.375 IN. THK,4 HOLES 0.343 IN. DIA THRU FLANGE;80 RMS MICROINCH FINISH IN |
| 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 |
|---|---|
| 30-19-90 | Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA) |
| 7520989 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2326T2 | 5/9 Secondary reference Spalla Inc |
| 2326T2 | 5/9 Secondary reference Diamond Reo Truck Co |
| 914089 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 30-19-90 | 5/2 Secondary reference U.S. Government activity |
NSN 2520-00-508-4664 is a Sleeve,input Shaft,transmission, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-508-4664 has 2 manufacturer part numbers on file: 30-19-90 (Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products), 7520989 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-532-5401. Verify interchangeability with system specifications before substitution.
Key specifications for 7520989: FSC Application Data: TRANSMISSION,MECHANICAL,VEHICULAR; General Characteristics Item Description: IRON CASTING,QQ-I-652,CLASS 30,CYLINDRICAL SHAPE;4.344 IN. LG;1.871 IN. OD; 1.509 IN. ID;1 END FLANGED,4.873 IN. OD,0.375 IN. THK,4 HOLES 0.343 IN. DIA THRU FLANGE;80 RMS MICROINCH FINISH IN; End Item Identification: 2320005706541. 2 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.