The Ball,bearing, cataloged under National Stock Number 3110-01-121-2800, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-121-2800 |
| Item Name | Ball,bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Status | ACTIVE |
| Rolling Element Diameter | 0.31245 INCHES MINIMUM AND 0.31255 INCHES MAXIMUM IN |
| Special Test Features | SPECIAL QUALITY CONTROL TESTING |
| Criticality Code Justification | ZZZY |
| Style Designator | BALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Test Data Document | 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 440C OVERALL |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| AK-7 | 3/1 Design control — primary reference Roller Bearing Co of America, Inc Div Pic Design |
| 1671D75 ITEM 2 | 5/1 Secondary reference U.S. Government activity |
NSN 3110-01-121-2800 is a Ball,bearing, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
Key specifications for 3110-01-121-2800: Rolling Element Diameter: 0.31245 INCHES MINIMUM AND 0.31255 INCHES MAXIMUM IN; Special Test Features: SPECIAL QUALITY CONTROL TESTING; Criticality Code Justification: ZZZY; Style Designator: BALL. 8 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.