The Bearing,ball,annular, cataloged under National Stock Number 3110-01-133-9532, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-133-9532 |
| Primary Part Number | S1721M5P38L02 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Lubrication Material | OIL |
| Internal Clearance | 0.0003 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 1.3125 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO. 5T |
| Bore Diameter | 1.0625 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OUTER RING |
| Material | STEEL CORROSION RESISTING INNER RING |
| Material | STEEL CORROSION RESISTING BALL |
| Material | PLASTIC PHENOLIC RETAINER |
| 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 |
|---|---|
| S1721M5P38L02 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| S1721M5 | 5/9 Secondary reference Mpb Corp Div Timken Super Precision |
| 3TAR17-21U | 5/9 Secondary reference Mpb Corporation Dba Mpb Corp |
| 10107509 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 3110-01-133-9532 is a Bearing,ball,annular, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-133-9532 has 1 manufacturer part number on file: S1721M5P38L02 (Mpb Corp Div Timken Super Precision).
Key specifications for S1721M5P38L02: Retainer Fabrication Method: MACHINED; Lubrication Material: OIL; Internal Clearance: 0.0003 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 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.