The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-181-0844, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Precision Division. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-01-181-0844 |
| Primary Part Number | 13084578 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | New Hampshire Ball Bearings Inc Div Precision Division |
| Status | ACTIVE |
| Retainer Fabrication Method | COILED |
| Bearing Preload Rating | 2.0 POUNDS MINIMUM AND 3.0 POUNDS MAXIMUM LBS |
| Internal Fit-Up Designation | STANDARD |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 0.4998 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Specification/standard Data | 58260-13084578 GOVERNMENT SPECIFICATION |
| Contact Angle | 13.0 DEGREES NOMINAL |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO. 7P |
| Bore Diameter | 0.2498 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Material | STEEL COMP 440C INNER RING |
| Material | OIL LUBRICATION |
| Material | STEEL COMP 440C OUTER RING |
| Material | STEEL CORROSION RESISTING RETAINER |
| Material | STEEL COMP 440C BALL |
| Material | STEEL CORROSION RESISTING SHIELD |
| Material | STEEL COMP 440C SPACER |
| Lubrication Material Document and Classification | XRL 743A,FSCM 19135 MFR REF SINGLE MATERIAL RESPONSE A |
| 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 |
|---|---|
| 13084578 PRIMARY | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| 13084578 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| 13084578 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
| G307 | 5/1 Secondary reference Mpb Corp Div Timken Super Precision |
NSN 3110-01-181-0844 is a Bearing,ball,duplex, manufactured by New Hampshire Ball Bearings Inc Div Precision Division, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-181-0844 has 2 manufacturer part numbers on file: 13084578 (New Hampshire Ball Bearings Inc Div Precision Division), 13084578 (Mpb Corp Div Timken Super Precision).
2 possible matches (shared part number, not a government interchangeability claim): 6530-01-206-6014, 5120-01-642-8168. Verify interchangeability with system specifications before substitution.
Key specifications for 13084578: Retainer Fabrication Method: COILED; Bearing Preload Rating: 2.0 POUNDS MINIMUM AND 3.0 POUNDS MAXIMUM LBS; Internal Fit-Up Designation: STANDARD; Surface Finish: GROUND. 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.