The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-00-412-3446, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-412-3446 |
| Primary Part Number | 654127 |
| 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 |
| Outer Ring Width | 0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN |
| Internal Clearance | 0.0020 INCHES MINIMUM RADIAL AND 0.0032 INCHES MAXIMUM RADIAL IN |
| Locating Feature | ONE DIRECTION |
| Surface Finish | GROUND |
| Style Designator | SOLID INNER AND OUTER RACES |
| Material Document and Classification | PWA 725,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Overall Outside Diameter | 3.1780 INCHES MINIMUM AND 3.1800 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Standard Tolerance Designation | RBEC NO.5 |
| Bore Diameter | 1.5746 INCHES MINIMUM AND 1.5748 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Inner Ring Width | 0.8611 INCHES MINIMUM AND 0.8661 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 654128 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 654127 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 656065 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 654126 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 3110-00-412-3446 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 3110-00-412-3446 has 3 manufacturer part numbers on file: 654128 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 654127 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 656065 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
2 possible matches (shared part number, not a government interchangeability claim): 5963-01-251-7248, 5895-01-459-4070. Verify interchangeability with system specifications before substitution.
Key specifications for 654127: Retainer Fabrication Method: MACHINED; Outer Ring Width: 0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN; Internal Clearance: 0.0020 INCHES MINIMUM RADIAL AND 0.0032 INCHES MAXIMUM RADIAL IN; Locating Feature: ONE DIRECTION. 13 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.
NSN 3110-00-412-3446 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.