The Bearing,sleeve, cataloged under National Stock Number 3120-01-045-0202, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Astro Division. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3120-01-045-0202 |
| Primary Part Number | AM1290 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | New Hampshire Ball Bearings Inc Div Astro Division |
| Status | ACTIVE |
| Flange Outside Diameter | 1.1600 INCHES MINIMUM AND 1.1700 INCHES MAXIMUM IN |
| Body Outside Diameter | 1.0003 INCHES MINIMUM AND 1.0008 INCHES MAXIMUM IN |
| Flange Width | 0.1350 INCHES MINIMUM AND 0.1450 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 |
|---|---|
| AM1290 PRIMARY | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| HSPR-4H-1 PRIMARY | Roller Bearing Company of America, Inc. (USA) |
| 369A1727 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 369A1727 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 3120-01-045-0202 is a Bearing,sleeve, manufactured by New Hampshire Ball Bearings Inc Div Astro Division, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-045-0202 has 3 manufacturer part numbers on file: AM1290 (New Hampshire Ball Bearings Inc Div Astro Division), HSPR-4H-1 (Roller Bearing Company of America, Inc.), 369A1727 (The Boeing Company).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-447-4136. Verify interchangeability with system specifications before substitution.
Key specifications for AM1290: Flange Outside Diameter: 1.1600 INCHES MINIMUM AND 1.1700 INCHES MAXIMUM IN; Body Outside Diameter: 1.0003 INCHES MINIMUM AND 1.0008 INCHES MAXIMUM IN; Overall Length: 0.5100 INCHES NOMINAL IN; Flange Width: 0.1350 INCHES MINIMUM AND 0.1450 INCHES MAXIMUM IN. 3 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.