The Bearing,ball,annular, cataloged under National Stock Number 3110-01-137-1618, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Skf Usa Inc.. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-137-1618 |
| Primary Part Number | 6311-LZ |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Skf Usa Inc. |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Shield Quantity | 1 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 4.7244 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Seal Quantity | 1 |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 2.1654 INCHES NOMINAL IN |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | RUBBER SYNTHETIC SEAL |
| Material | STEEL RETAINER |
| Material | STEEL BALL |
| Material | STEEL SHIELD |
| Lubrication Material Document and Classification | MIL-G-18709 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 |
|---|---|
| 6311-LZ PRIMARY | Skf Usa Inc. (USA) |
| 311SFZ PRIMARY | Skf Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| 636311-RSZ | 5/9 Secondary reference Skf Industries Inc Nice Bearing Products Div |
| A7818R55 | 5/9 Secondary reference Marathon Electric, Llc |
| 97611 | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
NSN 3110-01-137-1618 is a Bearing,ball,annular, manufactured by Skf Usa Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-137-1618 has 2 manufacturer part numbers on file: 6311-LZ (Skf Usa Inc.), 311SFZ (Skf Usa Inc.).
Key specifications for 6311-LZ: Retainer Fabrication Method: PRESSED; Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Internal Fit-Up Designation: STANDARD. 20 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.