The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-284-3404, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corporation Dba Mpb Corp. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-284-3404 |
| Primary Part Number | 37479 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corporation Dba Mpb Corp |
| Status | ACTIVE |
| Bearing Preload Rating | 7.0 POUNDS NOMINAL LBS |
| Surface Finish | GROUND |
| Style Designator | UNIVERSAL GROUND FACES, COUNTERBORED OUTER RING, NON-SEPARABLE |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 1.1500 INCHES MINIMUM AND 1.1600 INCHES MAXIMUM IN |
| Contact Angle | 31.2 DEGREES NOMINAL |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.5 |
| Bore Diameter | 0.4722 INCHES MINIMUM AND 0.4724 INCHES MAXIMUM IN |
| Material | OIL LUBRICATION |
| Material | STEEL COMP 4340 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3110-01-284-3404 is a Bearing,ball,duplex, manufactured by Mpb Corporation Dba Mpb Corp, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-284-3404 has 2 manufacturer part numbers on file: 37479 (Williams International Co., L.l.c.), 37479 (Mpb Corporation Dba Mpb Corp).
1 possible match (shared part number, not a government interchangeability claim): 3830-01-578-8176. Verify interchangeability with system specifications before substitution.
Key specifications for 37479: Bearing Preload Rating: 7.0 POUNDS NOMINAL LBS; Surface Finish: GROUND; Style Designator: UNIVERSAL GROUND FACES, COUNTERBORED OUTER RING, NON-SEPARABLE; Material Document and Classification: UNABLE TO DECODE. 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.
NSN 3110-01-284-3404 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.