The Bearing,ball,annular, cataloged under National Stock Number 3110-01-204-6944, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is N T N Bearing Corp of America. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-204-6944 |
| Primary Part Number | 6311ZZAPM/3W |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | N T N Bearing Corp of America |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Lubrication Material | GREASE |
| Internal Clearance | 0.0007 INCHES MINIMUM RADIAL AND 0.0011 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | ASTM A295 ASSN STD ALL MATERIAL RESPONSES BALL |
| Material Document and Classification | ASTM A295 ASSN STD SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | ASTM A295 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING |
| Overall Outside Diameter | 4.7242 INCHES MINIMUM AND 4.7244 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Alignment Type | RIGID |
| Test Data Document | 81349-MIL-B-17931 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.). |
| Bore Diameter | 2.1652 INCHES MINIMUM AND 2.1654 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL SHIELD |
| Material | STEEL COMP E52100 INNER RING |
| Material | COPPER ALLOY OR STEEL OR PLASTIC RETAINER |
| Material | STEEL COMP E50100 OR STEEL COMP E51100 OR STEEL COMP E52100 BALL |
| Lubrication Material Document and Classification | MIL-G-24139 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 | X |
| Part Number | Manufacturer |
|---|---|
| 6311ZZAPM/3W PRIMARY | N T N Bearing Corp of America (USA) |
| Reference | Meaning |
|---|---|
| K55-0070 | 5/9 Secondary reference Ward Leonard Ct Llc |
NSN 3110-01-204-6944 is a Bearing,ball,annular, manufactured by N T N Bearing Corp of America, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-204-6944 has 1 manufacturer part number on file: 6311ZZAPM/3W (N T N Bearing Corp of America).
Key specifications for 6311ZZAPM/3W: Retainer Fabrication Method: PRESSED; Lubrication Material: GREASE; Internal Clearance: 0.0007 INCHES MINIMUM RADIAL AND 0.0011 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 21 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.