The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-255-1114, 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 12 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-255-1114 |
| Primary Part Number | 2690075-1 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Finish | UNGROUND |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 4.1245 INCHES MINIMUM AND 4.1250 INCHES MAXIMUM IN |
| Load Direction | ANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Standard Tolerance Designation | ABEC NO. 5T |
| Bore Diameter | 3.4996 INCHES MINIMUM AND 3.5000 INCHES MAXIMUM IN |
| Material | OIL LUBRICATION |
| Material | STEEL COMP 440C OVERALL |
| 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 |
|---|---|
| 2690075-1 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| 2690075-1 PRIMARY | Kaydon Corporation Dba Kaydon Corp (USA) |
| Reference | Meaning |
|---|---|
| 3TAR56-66UDB25L0V-2 | 5/9 Secondary reference Mpb Corporation Dba Mpb Corp |
| 15327201 | 5/1 Secondary reference Kaydon Corporation Dba Kaydon Corp |
| 2690075-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| T586 | 5/1 Secondary reference Mpb Corp Div Timken Super Precision |
NSN 3110-01-255-1114 is a Bearing,ball,duplex, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-255-1114 has 2 manufacturer part numbers on file: 2690075-1 (Mpb Corp Div Timken Super Precision), 2690075-1 (Kaydon Corporation Dba Kaydon Corp).
Key specifications for 2690075-1: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Surface Finish: UNGROUND; Style Designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING; Material Document and Classification: UNABLE TO DECODE. 12 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.