The Bearing,ball,airframe, cataloged under National Stock Number 3110-00-023-6669, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 24 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3110-00-023-6669 |
| Primary Part Number | MS27640-4 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — No Item Name Available |
| Manufacturer | Sae International Dba Sae International |
| Status | CANCELLED |
| Bearing Seal Type | CONTACT |
| Outer Ring Width | 0.3350 INCHES NOMINAL IN |
| Seal Quantity | 2 |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS |
| Inner Ring Width | 0.4840 INCHES NOMINAL IN |
| Load Direction | RADIAL |
| Lubrication Material Document and Classification | MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE |
| Bore Diameter | 0.2500 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING RETAINER |
| Material Document and Classification | AMS 3652 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 3666 ASSN STD SINGLE MATERIAL RESPONSE SEAL |
| Surface Treatment | CADMIUM EXPOSED SURFACES AS MOUNTED |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OUTER RING |
| Style Designator | SINGLE ROW INNER RING EXTENDED BOTH SIDES |
| Material | STEEL COMP E52100 INNER RING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES BALL |
| Material | STEEL COMP E52100 OUTER RING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAL |
| Material | STEEL COMP E51100 OR STEEL COMP E52100 BALL |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE EXPOSED SURFACES AS MOUNTED |
| Overall Outside Diameter | 0.9014 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS27640-4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| KP4FS464 | Timken Co Div the Timken Company (USA) |
| AS27640 | Sae International Dba Sae International (USA) |
| KP4 | Industrial Tectonics Bearings Corporation Dba Rbc Bearings Inc Div Industrial Tectonics Bearings (USA) |
| KP4FS464 | Timken Europa Sarl (FRA) |
| SAE-AS27640 | Society of Automotive Engineers Inc (USA) |
| MS27640-4 | Industrial Tectonics Bearings Corporation Dba Rbc Bearings Inc Div Industrial Tectonics Bearings (USA) |
| MS27640KP4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS27640-4 | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| MS27640-4 | Society of Automotive Engineers Inc (USA) |
| 9408308503 | Pilatus Aircraft Ltd (CHE) |
| KP4A1488 | Timken Co Div the Timken Company (USA) |
| SAE-AS27640 | Sae International Dba Sae International (USA) |
| AN200KP4 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| MS20200KP4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| AS27640 | Society of Automotive Engineers Inc (USA) |
| MS27640-4 PRIMARY | Sae International Dba Sae International (USA) |
| MS27640-4 | Wencor, Llc (USA) |
| KP4 | Timken Co Div the Timken Company (USA) |
| KP4 | Skf Usa Inc. (USA) |
NSN 3110-00-023-6669 is a Bearing,ball,airframe, manufactured by Sae International Dba Sae International, classified under FSC 3110 (No Item Name Available). Status: cancelled.
NSN 3110-00-023-6669 has 24 cross-referenced part numbers: MS27640-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), KP4FS464 (Timken Co Div the Timken Company), AS27640 (Sae International Dba Sae International), KP4 (Industrial Tectonics Bearings Corporation Dba Rbc Bearings Inc Div Industrial Tectonics Bearings), KP4FS464 (Timken Europa Sarl) and 19 more.
There are 10 known substitutes for 3110-00-023-6669: 3110-00-023-4022, 3110-00-023-4799, 3110-00-023-4810 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS27640-4: Bearing Seal Type: CONTACT; Outer Ring Width: 0.3350 INCHES NOMINAL IN; Special Features: 80 PCT. FULL OF MIL-G-81322,INTERNAL RADIAL CLEARANCE 0.0004 IN. MIN,0.0010 IN. MAX,HEAT TREAT RINGS AND BALLS TO ROCKWELL C 60 TO 66 AND STABILIZED FOR OPERATION AT 250 DEG. F,RADIAL AND LATERAL ECCENTRICITY INNER RING 0.0010 IN. OUTERRING 0.0016 IN. IN; Seal Quantity: 2. 22 total characteristics are documented in the Federal Logistics Information System.
NSN 3110-00-023-6669 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.