The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-169-4641, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corporation Dba Mpb Corp. Government technical data includes 15 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. 2 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 | 3110-01-169-4641 |
| Primary Part Number | TCR25-32P |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corporation Dba Mpb Corp |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Lubrication Material | OIL |
| Outer Ring Width | 0.2500 INCHES NOMINAL IN |
| Internal Fit-Up Designation | TIGHT |
| Style Designator | SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE |
| Overall Outside Diameter | 2.0000 INCHES NOMINAL IN |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 1.5625 INCHES NOMINAL IN |
| Material | STEEL COMP E52100 BALL |
| Material | PLASTIC PHENOLIC RETAINER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Lubrication Material Document and Classification | MIL-L-6085A MIL SPEC 1ST MATERIAL RESPONSE A |
| Inner Ring Width | 0.2810 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 |
| Part Number | Manufacturer |
|---|---|
| TCR25-32P PRIMARY | Mpb Corporation Dba Mpb Corp (USA) |
| 3522 500 15423 | Thales Nederland (NLD) |
| 230502 | Safran Transmission Systems (FRA) |
NSN 3110-01-169-4641 is a Bearing,ball,airframe, manufactured by Mpb Corporation Dba Mpb Corp, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-169-4641 has 3 manufacturer part numbers on file: TCR25-32P (Mpb Corporation Dba Mpb Corp), 3522 500 15423 (Thales Nederland), 230502 (Safran Transmission Systems).
2 possible matches (shared part number, not a government interchangeability claim): 5910-01-508-3587, 6840-01-583-7330. Verify interchangeability with system specifications before substitution.
Key specifications for TCR25-32P: Retainer Fabrication Method: MACHINED; Lubrication Material: OIL; Outer Ring Width: 0.2500 INCHES NOMINAL IN; Internal Fit-Up Designation: TIGHT. 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.