The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-499-3474, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Roller Bearing Company of America, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-499-3474 |
| Primary Part Number | 38950-00912-102 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Roller Bearing Company of America, Inc. |
| Status | ACTIVE |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.6560 INCHES NOMINAL IN |
| Style Designator | DOUBLE ROW, SELF ALIGNING |
| Overall Outside Diameter | 1.2500 INCHES MINIMUM AND 1.2504 INCHES MAXIMUM IN |
| Load Direction | RADIAL |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES |
| Seal Quantity | 2 |
| Bore Diameter | 0.3125 INCHES MINIMUM AND 0.3128 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC SEAL |
| Material | STEEL OVERALL |
| Self-Alignment Location | INTERNAL |
| Lubrication Material Document and Classification | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.8120 INCHES NOMINAL IN |
| 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 |
|---|---|
| 38950-00912-102 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 38950-00912-102 PRIMARY | Roller Bearing Company of America, Inc. (USA) |
| Reference | Meaning |
|---|---|
| MDSP5FSK | 5/1 Secondary reference Roller Bearing Company of America, Inc. |
| 38590-00912 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 3110-01-499-3474 is a Bearing,ball,airframe, manufactured by Roller Bearing Company of America, Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-499-3474 has 2 manufacturer part numbers on file: 38950-00912-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 38950-00912-102 (Roller Bearing Company of America, Inc.).
Key specifications for 38950-00912-102: Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Outer Ring Width: 0.6560 INCHES NOMINAL IN; Style Designator: DOUBLE ROW, SELF ALIGNING. 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.