The Bearing,sleeve, cataloged under National Stock Number 3120-00-474-3281, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3120-00-474-3281 |
| Primary Part Number | 37760 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 2.8455 INCHES MINIMUM AND 2.8460 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C NOMINAL OVERALL |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | AMS 4820 ASSN STD SINGLE MATERIAL RESPONSE OUTER LAYER |
| Material Document and Classification | AMS 4820 ASSN STD SINGLE MATERIAL RESPONSE INNER LAYER |
| Body Inside Diameter | 2.5535 INCHES MINIMUM AND 2.5575 INCHES MAXIMUM IN |
| Antirotation/lubrication Type and Quantity | 4 HOLE |
| Material | STEEL OUTER LAYER |
| Material | COPPER ALLOY INNER LAYER |
| Hole Diameter | 0.0938 INCHES NOMINAL FIRST IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3120-00-474-3281 is a Bearing,sleeve, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-474-3281 has 2 manufacturer part numbers on file: 37760 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 37760 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-106-9332, 4730-01-647-9992. Verify interchangeability with system specifications before substitution.
Key specifications for 37760: Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 2.8455 INCHES MINIMUM AND 2.8460 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C NOMINAL OVERALL; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 11 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.