The Sleeve,centering, cataloged under National Stock Number 2910-00-321-6511, is classified within Federal Supply Class 2910 (Engine Fuel System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Ambac International Corporation Div Ambac International. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2910-00-321-6511 |
| Primary Part Number | ENJ78-21 |
| Item Name | Sleeve,centering |
| FSC / FSG | 2910 / 29 — Engine Fuel System Components, Nonaircraft |
| Manufacturer | Ambac International Corporation Div Ambac International |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,0.625 IN. OD,1.125 IN. O/A LG,0.500 IN. BORE DIA 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 |
|---|---|
| ENJ78-21 PRIMARY | Ambac International Corporation Div Ambac International (USA) |
| ENJ22-7 PRIMARY | Ambac International Corporation Div Ambac International (USA) |
| Reference | Meaning |
|---|---|
| TSE772 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
| TSE772 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
NSN 2910-00-321-6511 is a Sleeve,centering, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 2910, Engine Fuel System Components, Nonaircraft. Status: active.
NSN 2910-00-321-6511 has 2 manufacturer part numbers on file: ENJ78-21 (Ambac International Corporation Div Ambac International), ENJ22-7 (Ambac International Corporation Div Ambac International).
Key specifications for ENJ78-21: General Characteristics Item Description: STEEL,0.625 IN. OD,1.125 IN. O/A LG,0.500 IN. BORE DIA 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.