The Bearing,ball,annular, cataloged under National Stock Number 3110-00-155-8915, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-155-8915 |
| Primary Part Number | MS12 1-2 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Fag Bearings Corporation |
| Status | ACTIVE |
| Lubrication Material | LUBRICANT |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Overall Outside Diameter | 3.5000 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Nondefinitive Spec/std Data | 115 TYPE AND 00 CLASS |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 1.3750 INCHES NOMINAL 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 3110-00-155-8915 is a Bearing,ball,annular, manufactured by Fag Bearings Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-155-8915 has 3 manufacturer part numbers on file: MS12 1-2 (Fag Bearings Corporation), RMS11 (Skf Usa Inc.), MS12 1-2 (Schatz Bearing Corporation Dba Schatz Bearing Corp).
1 possible match (shared part number, not a government interchangeability claim): 6665-01-435-0137. Verify interchangeability with system specifications before substitution.
Key specifications for MS12 1-2: Lubrication Material: LUBRICANT; Internal Fit-Up Designation: STANDARD; Surface Finish: GROUND; Overall Width: 0.8750 INCHES NOMINAL IN. 9 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.