The Bearing,ball,annular, cataloged under National Stock Number 3110-00-554-3160, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Precision Division. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-554-3160 |
| Primary Part Number | SSRI-618ZRA5P24T14L01 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | New Hampshire Ball Bearings Inc Div Precision Division |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Internal Clearance | 0.0002 INCHES MINIMUM RADIAL AND 0.0004 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 1 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 0.3750 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.5 |
| Bore Diameter | 0.1250 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| SR1A-679ZK1 | Schaeffler Aerospace Canada Inc Div Fag Aerospace (CAN) |
| SSRI-618ZRA5P24T14L01 PRIMARY | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| SSRI-618ZR PRIMARY | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| S618CHN5 | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| SR25WX52 | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| SSRI-618ZH PRIMARY | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| S618CHN5P24L04 | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| SR1A-679ZK1 | 5/9 Secondary reference Fag Bearings Corporation |
| SSRI-618ZRA5P24T14L04(AK) | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Precision Division |
| SR2-6UP | 3/2 Design control — primary reference U.S. Government activity |
| SR25X52 | 5/9 Secondary reference Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| SR2-65UPWK24 | 5/2 Secondary reference U.S. Government activity |
| 1290269-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
NSN 3110-00-554-3160 is a Bearing,ball,annular, manufactured by New Hampshire Ball Bearings Inc Div Precision Division, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-554-3160 has 7 manufacturer part numbers on file: SR1A-679ZK1 (Schaeffler Aerospace Canada Inc Div Fag Aerospace), SSRI-618ZRA5P24T14L01 (New Hampshire Ball Bearings Inc Div Precision Division), SSRI-618ZR (New Hampshire Ball Bearings Inc Div Precision Division), S618CHN5 (New Hampshire Ball Bearings Inc Div Precision Division), SR25WX52 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation) and 2 more.
Key specifications for SSRI-618ZRA5P24T14L01: Retainer Fabrication Method: PRESSED; Internal Clearance: 0.0002 INCHES MINIMUM RADIAL AND 0.0004 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND; Shield Quantity: 1. 11 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.