The Bearing,ball,annular, cataloged under National Stock Number 3110-00-156-5145, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Skf Usa Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-156-5145 |
| Primary Part Number | 1220 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Skf Usa Inc. |
| Status | ACTIVE |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Style Designator | NON-SEPARABLE |
| Overall Outside Diameter | 180.00 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Contact Angle | 25.0 DEGREES MAXIMUM |
| Load Direction | ANGULAR |
| Alignment Type | SELF-ALIGNING |
| Internal Fit-Up Contact Angular Direction | INWARD CONVERGENT |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 100.00 MILLIMETERS NOMINAL MM |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | STEEL BALL |
| Self-Alignment Location | INTERNAL |
| 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 |
|---|---|
| 1220 PRIMARY | Skf Usa Inc. (USA) |
| 72-6970-030 PRIMARY | Fairbanks Morse, Llc (USA) |
| 177009-80 PRIMARY | Naval Sea Systems Command (USA) |
| 700691 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| U200 PRIMARY | Fag Bearings Corporation (USA) |
| K9045296 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 1220SA | 5/9 Secondary reference Schatz Bearing Corporation Dba Schatz Bearing Corp |
| 72-6970-030 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 177009-80 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 1220 | 5/9 Secondary reference U.S. Government activity |
NSN 3110-00-156-5145 is a Bearing,ball,annular, manufactured by Skf Usa Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-156-5145 has 6 manufacturer part numbers on file: 1220 (Skf Usa Inc.), 72-6970-030 (Fairbanks Morse, Llc), 177009-80 (Naval Sea Systems Command), 700691 (Army Weapons Command Attn Amswe-Ree-S), U200 (Fag Bearings Corporation) and 1 more.
3 possible matches (shared part number, not a government interchangeability claim): 4720-00-950-0184, 6150-01-392-3689, 5315-01-588-2452. Verify interchangeability with system specifications before substitution.
Key specifications for 1220: Internal Fit-Up Designation: STANDARD; Surface Finish: GROUND; Style Designator: NON-SEPARABLE; Overall Width: 34.0 MILLIMETERS NOMINAL MM. 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.