The Ball,bearing, cataloged under National Stock Number 3110-00-546-4331, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Emerson Electric Co Alco Controls Div. Government technical data includes 5 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. 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 | 3110-00-546-4331 |
| Primary Part Number | PS122 |
| Item Name | Ball,bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Rolling Element Diameter | 0.1873 INCHES MINIMUM AND 0.1877 INCHES MAXIMUM IN |
| Style Designator | BALL |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR BALLS, GRADE 50 |
| Material | STEEL COMP 440A OVERALL 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 |
|---|---|
| PS122 PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
NSN 3110-00-546-4331 is a Ball,bearing, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-546-4331 has 1 manufacturer part number on file: PS122 (Emerson Electric Co Alco Controls Div).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-104-7937. Verify interchangeability with system specifications before substitution.
Key specifications for PS122: Rolling Element Diameter: 0.1873 INCHES MINIMUM AND 0.1877 INCHES MAXIMUM IN; Style Designator: BALL; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Standard Tolerance Designation: AFBMA STD TOLERANCE FOR BALLS, GRADE 50. 5 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.