The Bearing,ball,annular, cataloged under National Stock Number 3110-01-033-2753, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-01-033-2753 |
| Primary Part Number | 051187 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Lubrication Material | GREASE |
| Internal Clearance | 0.0002 INCHES MINIMUM RADIAL AND 0.0004 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Overall Outside Diameter | 0.6250 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.5 |
| Bore Diameter | 0.2500 INCHES NOMINAL IN |
| Material | STEEL COMP 440A OVERALL A |
| Lubrication Material Document and Classification | MIL-G-23827 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 |
|---|---|
| 051187 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| SR4K3ABEC5G2 PRIMARY | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| Reference | Meaning |
|---|---|
| 887B051187 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
| 887F050096 ITEM 41 | 7/2 Vendor item drawing reference L3 Technologies, Inc. Div L3 Keo |
NSN 3110-01-033-2753 is a Bearing,ball,annular, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-033-2753 has 2 manufacturer part numbers on file: 051187 (L3 Technologies, Inc. Div L3 Keo), SR4K3ABEC5G2 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 3120-01-333-5305, 6515-01-531-4715. Verify interchangeability with system specifications before substitution.
Key specifications for 051187: Retainer Fabrication Method: PRESSED; Lubrication Material: GREASE; Internal Clearance: 0.0002 INCHES MINIMUM RADIAL AND 0.0004 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 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.
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.