The Bearing,sleeve, cataloged under National Stock Number 3120-01-121-2804, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-121-2804 |
| Primary Part Number | 74A410545-2001 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 125.0 MICROINCHES RIGHT END SURFACE OF BODY |
| Surface Finish | 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 125.0 MICROINCHES LEFT END SURFACE OF BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 0.8760 INCHES MINIMUM AND 0.8765 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Body Inside Diameter | 0.7515 INCHES MINIMUM AND 0.7525 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OUTER LAYER |
| Test Data Document | 76301-PS21202 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | ALUMINUM ALLOY 2024 OUTER LAYER |
| Material | PLASTIC POLYURETHANE INNER LAYER |
| 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 |
|---|---|
| 74A410545-2001 | Blair Industries Inc (USA) |
| 74A410545-2001 | Nassau Tool Works, Inc (USA) |
| 74A410545-2001 | Kamatics Corporation (USA) |
| 74A410545-2001 | Safran Landing Systems Canada Inc. (CAN) |
| 4A411716-2001 | Israel Aerospace Industries Ltd.shl-Aero Assemblies Division (ISR) |
| 4A411716-2001 | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| 74A410545-2001 | Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA) |
| 4A411716-2001 | Kamatics Corporation (USA) |
| 74A410545-2001 | Israel Aerospace Industries Ltd.shl-Aero Assemblies Division (ISR) |
| 74A4410545-2001 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 74A4410545-2001 | Hdi Landing Gear Usa Inc (USA) |
| 74A410545-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A4410545-2001 | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| 74A410545-2001 | Heroux-Devtek Inc (CAN) |
| Reference | Meaning |
|---|---|
| 74A410545-2001 | 5/2 Secondary reference U.S. Government activity |
| 74A410545-2001 | C/1 Advisory reference — outside the item-of-supply concept Goodrich Corporation Div Advanced Structures Landing Systems |
| 10107776 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A410545-2001 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
| 74A410545-2001 | C/1 Advisory reference — outside the item-of-supply concept Circor Aerospace, Inc. Div Circor |
| 74A410545-2001 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A410545-2001 | 5/1 Secondary reference Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc |
| 74A410545-2001 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
NSN 3120-01-121-2804 is a Bearing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-121-2804 has 14 manufacturer part numbers on file: 74A410545-2001 (Blair Industries Inc), 74A410545-2001 (Nassau Tool Works, Inc), 74A410545-2001 (Kamatics Corporation), 74A410545-2001 (Safran Landing Systems Canada Inc.), 4A411716-2001 (Israel Aerospace Industries Ltd.shl-Aero Assemblies Division) and 9 more.
Key specifications for 74A410545-2001: Surface Finish: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Surface Finish: 125.0 MICROINCHES RIGHT END SURFACE OF BODY; Surface Finish: 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Surface Finish: 125.0 MICROINCHES LEFT END SURFACE OF BODY. 12 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.