The Bearing,ball,annular, cataloged under National Stock Number 3110-00-151-8101, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Fag Bearings Corporation. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-151-8101 |
| Primary Part Number | MT312MF |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Fag Bearings Corporation |
| Status | ACTIVE |
| Internal Fit-Up Designation | LOOSE |
| Surface Finish | GROUND |
| Style Designator | LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 130.00 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 60.00 MILLIMETERS NOMINAL MM |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | STEEL BALL |
| 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 |
|---|---|
| P312W | Timken Co Div the Timken Company (USA) |
| MT312MF PRIMARY | Fag Bearings Corporation (USA) |
| 1312LY1 | General Motors Llc Dba General Motors Llc (USA) |
| 1312L1A | General Motors Llc Dba General Motors Llc (USA) |
| FCJ2 1-2 PRIMARY | General Electric Company (USA) |
| 225X28 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 1312L1A | 5/9 Secondary reference General Motors Corp |
| 1312LY1 | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
| 1312LY1 | 5/9 Secondary reference General Motors Corp |
| 41312L | 5/9 Secondary reference Hyster-Yale Group, Inc. |
| 1312L1A | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
NSN 3110-00-151-8101 is a Bearing,ball,annular, manufactured by Fag Bearings Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-151-8101 has 6 manufacturer part numbers on file: P312W (Timken Co Div the Timken Company), MT312MF (Fag Bearings Corporation), 1312LY1 (General Motors Llc Dba General Motors Llc), 1312L1A (General Motors Llc Dba General Motors Llc), FCJ2 1-2 (General Electric Company) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5930-00-228-6162. Verify interchangeability with system specifications before substitution.
Key specifications for MT312MF: Internal Fit-Up Designation: LOOSE; Surface Finish: GROUND; Style Designator: LOADING GROOVE, NON-SEPARABLE; Overall Width: 31.0 MILLIMETERS NOMINAL MM. 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.