The Bushing,sleeve, cataloged under National Stock Number 3120-01-481-5212, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Bath Iron Works Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-481-5212 |
| Primary Part Number | 8100-1251-0285 PT NO 42 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Bath Iron Works Corporation |
| Status | ACTIVE |
| Corner Shape | CHAMFERED INSIDE LEFT CORNER |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | CHAMFERED INSIDE RIGHT CORNER |
| Body Outside Diameter | 1.2510 INCHES MINIMUM AND 1.2520 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Body Inside Diameter | 1.0010 INCHES MINIMUM AND 1.0020 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 8100-1251-0285 PT NO 42 PRIMARY | Bath Iron Works Corporation (USA) |
| Reference | Meaning |
|---|---|
| 8100-1251-0285 | D/9 Drawing number reference only Bath Iron Works Corporation |
NSN 3120-01-481-5212 is a Bushing,sleeve, manufactured by Bath Iron Works Corporation, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-481-5212 has 1 manufacturer part number on file: 8100-1251-0285 PT NO 42 (Bath Iron Works Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-482-0281, 5310-01-487-7438. Verify interchangeability with system specifications before substitution.
Key specifications for 8100-1251-0285 PT NO 42: Corner Shape: CHAMFERED INSIDE LEFT CORNER; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: CHAMFERED INSIDE RIGHT CORNER. 8 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.