The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-01-003-6651, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-003-6651 |
| Primary Part Number | 4003686 |
| Item Name | Bearing,roller,cylindrical |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Internal Clearance | 0.0010 INCHES MINIMUM RADIAL AND 0.0015 INCHES MAXIMUM RADIAL IN |
| Locating Feature | ONE DIRECTION |
| Surface Finish | GROUND |
| Precious Material | SILVER |
| Style Designator | SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE |
| Material Document and Classification | PWA-725,97497 MFR REF 1ST MATERIAL RESPONSE INNER RING |
| Material Document and Classification | PWA-725,97497 MFR REF 3RD MATERIAL RESPONSE ROLLER |
| Material Document and Classification | PWA-725,97497 MFR REF 2ND MATERIAL RESPONSE OUTER RING |
| Overall Outside Diameter | 28.0 MILLIMETERS NOMINAL MM |
| Bore Shape | STRAIGHT |
| Standard Tolerance Designation | RBEC NO.1 |
| Bore Diameter | 12.0 MILLIMETERS NOMINAL MM |
| Material | STEEL COMP 4340 RETAINER |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | STEEL ROLLER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 4003686 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4061214 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 4057332 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4001280 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4057332 | Schaeffler Aerospace Canada Inc Div Fag Aerospace (CAN) |
| 4003686 PRIMARY | Mpb Corporation Dba Mpb Corp (USA) |
| Reference | Meaning |
|---|---|
| 4061214 | 5/9 Secondary reference Schaeffler Aerospace Canada Inc Div Fag Aerospace |
| 4061214 | 7/2 Vendor item drawing reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 4061214 | 5/9 Secondary reference Schaeffler Aerospace Germany Gmbh & Co. Kg |
| 4061214 | 5/9 Secondary reference Mpb Corporation Dba Mpb Corp |
NSN 3110-01-003-6651 is a Bearing,roller,cylindrical, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-003-6651 has 6 manufacturer part numbers on file: 4003686 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4061214 (Rtx Corporation Div Pratt & Whitney), 4057332 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4001280 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4057332 (Schaeffler Aerospace Canada Inc Div Fag Aerospace) and 1 more.
Key specifications for 4003686: Retainer Fabrication Method: MACHINED; Internal Clearance: 0.0010 INCHES MINIMUM RADIAL AND 0.0015 INCHES MAXIMUM RADIAL IN; Locating Feature: ONE DIRECTION; Surface Finish: GROUND. 17 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.