The Bushing,sleeve, cataloged under National Stock Number 3120-01-320-4978, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Preci-Manufacturing, Incorporated. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3120-01-320-4978 |
| Primary Part Number | 3904T51P01 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Preci-Manufacturing, Incorporated |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Flange Outside Diameter | 0.5000 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.3260 INCHES MINIMUM AND 0.3280 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Body Inside Diameter | 0.2520 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN |
| Flange Width | 0.0130 INCHES MINIMUM AND 0.0170 INCHES MAXIMUM 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 |
|---|---|
| 3904T51P01 | Preci-Manufacturing, Incorporated (USA) |
| 3904T51P01 | Sterling Machine Company, Inc. (USA) |
| 3904T51P01 | G.s. Precision, Inc. (USA) |
| 3904T51P01 | United Precision Products Co., Inc. (USA) |
| 3904T51P01 | Arro Engineering Corp. (USA) |
| Reference | Meaning |
|---|---|
| 10110354 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3904T51P01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3120-01-320-4978 is a Bushing,sleeve, manufactured by Preci-Manufacturing, Incorporated, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-320-4978 has 5 manufacturer part numbers on file: 3904T51P01 (Preci-Manufacturing, Incorporated), 3904T51P01 (Sterling Machine Company, Inc.), 3904T51P01 (G.s. Precision, Inc.), 3904T51P01 (United Precision Products Co., Inc.), 3904T51P01 (Arro Engineering Corp.).
Key specifications for 3904T51P01: Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE ALL CORNERS; Flange Outside Diameter: 0.5000 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN; Body Outside Diameter: 0.3260 INCHES MINIMUM AND 0.3280 INCHES MAXIMUM IN. 7 specifications are 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.