The Bearing,ball,annular, cataloged under National Stock Number 3110-01-045-6655, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corp Div Timken Super Precision. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3110-01-045-6655 |
| Primary Part Number | F173 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Bearing Seal Type | CONTACT |
| Lubrication Material | OIL |
| Internal Clearance | 0.0003 INCHES MINIMUM RADIAL AND 0.0007 INCHES MAXIMUM RADIAL IN |
| Flange Outside Diameter | 0.9690 INCHES NOMINAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 1 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE INNER RING |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Seal Quantity | 1 |
| Flange Width | 0.0620 INCHES NOMINAL IN |
| Outer Ring Outside Diameter | 0.8750 INCHES NOMINAL IN |
| Standard Tolerance Designation | ABEC NO. 5P |
| Bore Diameter | 0.3750 INCHES NOMINAL IN |
| Material | STEEL COMP 440A BALL A |
| Material | STEEL COMP 440A INNER RING A |
| Material | STEEL COMP 440A OUTER RING A |
| Material | STEEL CORROSION RESISTING RETAINER |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAL |
| Material | STEEL CORROSION RESISTING SNAP RING |
| Lubrication Material Document and Classification | MIL-L-6085 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 |
|---|---|
| F173 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| C11057-0002 | 5/9 Secondary reference Rosemount Inc Dba Fisher Rosemount Service and Support |
| C11057-0002 | 5/9 Secondary reference Rosemount Aerospace Inc Dba Rosemount Aerospace Inc |
NSN 3110-01-045-6655 is a Bearing,ball,annular, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-045-6655 has 1 manufacturer part number on file: F173 (Mpb Corp Div Timken Super Precision).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-388-1423. Verify interchangeability with system specifications before substitution.
Key specifications for F173: Retainer Fabrication Method: PRESSED; Bearing Seal Type: CONTACT; Lubrication Material: OIL; Internal Clearance: 0.0003 INCHES MINIMUM RADIAL AND 0.0007 INCHES MAXIMUM RADIAL IN. 25 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.