The Bearing,sleeve, cataloged under National Stock Number 3120-01-342-8617, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3120-01-342-8617 |
| Primary Part Number | 8100-1256-0305 PC NO 51 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Bath Iron Works Corporation |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 1.1265 INCHES MINIMUM AND 1.1275 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | MIL-B-5687,TYPE 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.8770 INCHES MINIMUM AND 0.8780 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 841 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 |
|---|---|
| 8100-1256-0305 PC NO 51 PRIMARY | Bath Iron Works Corporation (USA) |
| 803-5959220 PIECE 51 PRIMARY | Naval Sea Systems Command (USA) |
| 5959220 PIECE 51 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 8100-1256-0305 | C/1 Advisory reference — outside the item-of-supply concept Bath Iron Works Corporation |
NSN 3120-01-342-8617 is a Bearing,sleeve, manufactured by Bath Iron Works Corporation, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-342-8617 has 3 manufacturer part numbers on file: 8100-1256-0305 PC NO 51 (Bath Iron Works Corporation), 803-5959220 PIECE 51 (Naval Sea Systems Command), 5959220 PIECE 51 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-479-5066, 3040-01-479-5579, 3040-01-479-5929. Verify interchangeability with system specifications before substitution.
Key specifications for 8100-1256-0305 PC NO 51: Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Surface Finish: 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 1.1265 INCHES MINIMUM AND 1.1275 INCHES MAXIMUM IN. 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.