The Bushing,sleeve, cataloged under National Stock Number 3120-01-128-9031, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 6 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-128-9031 |
| Primary Part Number | 2493787 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 0.8005 INCHES MINIMUM AND 0.8010 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Body Inside Diameter | 0.6250 INCHES MINIMUM AND 0.6255 INCHES MAXIMUM IN |
| Surface Treatment | TIN OVERALL |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 2493787 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 10107838 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 2493787 | 5/9 Secondary reference U.S. Government activity |
NSN 3120-01-128-9031 is a Bushing,sleeve, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-128-9031 has 1 manufacturer part number on file: 2493787 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 2493787: Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 0.8005 INCHES MINIMUM AND 0.8010 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Overall Length: 0.6780 INCHES MINIMUM AND 0.6800 INCHES MAXIMUM IN. 6 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.