The Expander,oil Seal, cataloged under National Stock Number 4910-00-591-6640, is classified within Federal Supply Class 4910 (Motor Vehicle Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4910-00-591-6640 |
| Primary Part Number | 10949378 |
| Item Name | Expander,oil Seal |
| FSC / FSG | 4910 / 49 — Motor Vehicle Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL@QQ-S-633,C1018,C1117 TO C1137,CONDITION CF,1.895TO 1.905 IN. DIA.OD,1.689 TO 1.699 IN.ID,2.375 IN.LG,1.625IN.DIA.AT CLOSED END WITH 0.750 IN.LG CHAMPHER IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10949378 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| J7454 | 3/9 Design control — primary reference Bosch Automotive Service Solutions Inc. |
| 4910005916640 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| J7454 | 5/9 Secondary reference Delphi France SAS |
NSN 4910-00-591-6640 is a Expander,oil Seal, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4910, Motor Vehicle Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4910-00-591-6640 has 1 manufacturer part number on file: 10949378 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10949378: General Characteristics Item Description: STEEL@QQ-S-633,C1018,C1117 TO C1137,CONDITION CF,1.895TO 1.905 IN. DIA.OD,1.689 TO 1.699 IN.ID,2.375 IN.LG,1.625IN.DIA.AT CLOSED END WITH 0.750 IN.LG CHAMPHER IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.