The Bearing,ball,annular, cataloged under National Stock Number 3110-00-155-6490, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Bay City Shovels, Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-155-6490 |
| Primary Part Number | R5N |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Bay City Shovels, Inc |
| Status | ACTIVE |
| Lubrication Material | GREASE |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 180.00 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 100.00 MILLIMETERS NOMINAL MM |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | STEEL BALL |
| Material | STEEL SHIELD |
| Lubrication Material Document and Classification | DOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| 77220 | General Motors Corp (USA) |
| R5N PRIMARY | Bay City Shovels, Inc (USA) |
| 77220 PRIMARY | Manitowoc Engineering Co Division of the Manitowoc Co Inc (USA) |
| R12H PRIMARY | Bay City Shovels, Inc (USA) |
| 1220SS PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| R6H PRIMARY | Bay City Shovels, Inc (USA) |
| 220MFF PRIMARY | Skf Usa Inc. (USA) |
| R7N PRIMARY | Bay City Shovels, Inc (USA) |
| 220WDD | Timken Co Div the Timken Company (USA) |
| R38G PRIMARY | Bay City Shovels, Inc (USA) |
| Reference | Meaning |
|---|---|
| 377053CC | 3/2 Design control — primary reference U.S. Government activity |
| 1220MFF | 5/9 Secondary reference Schatz Bearing Corporation Dba Schatz Bearing Corp |
| 77220 | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
NSN 3110-00-155-6490 is a Bearing,ball,annular, manufactured by Bay City Shovels, Inc, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-155-6490 has 10 manufacturer part numbers on file: 77220 (General Motors Corp), R5N (Bay City Shovels, Inc), 77220 (Manitowoc Engineering Co Division of the Manitowoc Co Inc), R12H (Bay City Shovels, Inc), 1220SS (Federal-Mogul Corp Government Sales Dept) and 5 more.
5 possible matches (shared part number, not a government interchangeability claim): 7510-01-084-0121, 5985-01-145-1073, 4330-01-446-1196. Verify interchangeability with system specifications before substitution.
Key specifications for R5N: Lubrication Material: GREASE; Internal Fit-Up Designation: STANDARD; Surface Finish: GROUND; Shield Quantity: 2. 15 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.