The Bearing,ball,annular, cataloged under National Stock Number 3110-01-349-5212, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corp Div Timken Super Precision. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-01-349-5212 |
| Primary Part Number | T478-000 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Lubrication Material | GREASE |
| Flange Outside Diameter | 1.2710 INCHES MINIMUM AND 1.2910 INCHES MAXIMUM IN |
| Surface Finish | GROUND |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Flange Width | 0.0615 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN |
| Outer Ring Outside Diameter | 1.1871 INCHES MINIMUM AND 1.1875 INCHES MAXIMUM IN |
| Standard Tolerance Designation | ABEC NO. 5T |
| Bore Diameter | 0.7498 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 BALL |
| Material | PLASTIC PHENOLIC RETAINER |
| Material | STEEL COMP E52100 INNER RACE |
| Material | STEEL COMP E52100 OUTER RACE |
| Lubrication Material Document and Classification | MIL-G-81322 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 | N |
| Part Number | Manufacturer |
|---|---|
| T478-000 | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| 5906371 | 1/2 Source control — Government-approved source U.S. Government activity |
| RIF-539QQ4SD600KFA5P713 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3110-01-349-5212 is a Bearing,ball,annular, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-349-5212 has 1 manufacturer part number on file: T478-000 (Mpb Corp Div Timken Super Precision).
Key specifications for T478-000: Lubrication Material: GREASE; Flange Outside Diameter: 1.2710 INCHES MINIMUM AND 1.2910 INCHES MAXIMUM IN; Surface Finish: GROUND; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE. 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.