The Bearing,ball,duplex, cataloged under National Stock Number 3110-00-403-7658, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-00-403-7658 |
| Primary Part Number | SR2134HX2DB22 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| Status | ACTIVE |
| Bearing Preload Rating | 25.0 POUNDS NOMINAL LBS |
| Internal Clearance | 0.0006 INCHES MINIMUM RADIAL AND 0.0010 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 1.3125 INCHES NOMINAL IN |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO. 5T |
| Bore Diameter | 1.0625 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEPARATOR |
| Material | STEEL COMP 440C INNER RING |
| Material | STEEL COMP 440C OUTER RING |
| Material | STEEL COMP 440C BALL |
| Material | OIL LUBRICATING LUBRICATION |
| 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 |
|---|---|
| SR2134HX2DB22 PRIMARY | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| 3TA017-21A8 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| 972155-1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 3TA017-21A8 | 5/9 Secondary reference Mpb Corporation Dba Mpb Corp |
| 4303 | 3/2 Design control — primary reference U.S. Government activity |
| AMV68WI84AWDBE9937A | 5/9 Secondary reference Timken Co Div the Timken Company |
NSN 3110-00-403-7658 is a Bearing,ball,duplex, manufactured by Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-403-7658 has 2 manufacturer part numbers on file: SR2134HX2DB22 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), 3TA017-21A8 (Mpb Corp Div Timken Super Precision).
Key specifications for SR2134HX2DB22: Bearing Preload Rating: 25.0 POUNDS NOMINAL LBS; Internal Clearance: 0.0006 INCHES MINIMUM RADIAL AND 0.0010 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND; Style Designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING. 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.