The Bearing,ball,thrust, cataloged under National Stock Number 3110-00-156-1778, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-156-1778 |
| Primary Part Number | A-A-52491-81 |
| Item Name | Bearing,ball,thrust |
| FSC / FSG | 3110 / 31 — No Item Name Available |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Bore Smallest Diameter | 2.2500 INCHES MINIMUM AND 2.2510 INCHES MAXIMUM IN |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR THRUST BEARINGS |
| Alignment Type | RIGID |
| Surface Finish | GROUND |
| Thrust Directional Capability Designation | SINGLE |
| Material | STEEL COMP E50100 OR STEEL COMP E51100 OVERALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Overall Outside Diameter | 3.3436 INCHES MINIMUM AND 3.3438 INCHES MAXIMUM IN |
| Style Designator | GROOVED RACE SURFACE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A-A-52491-81 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| MS17161-81 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 4318 | Timken Co Div the Timken Company (USA) |
NSN 3110-00-156-1778 is a Bearing,ball,thrust, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 3110 (No Item Name Available). Status: active.
NSN 3110-00-156-1778 has 3 cross-referenced part numbers: A-A-52491-81 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MS17161-81 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 4318 (Timken Co Div the Timken Company).
There are 12 known substitutes for 3110-00-156-1778: 6680-00-018-2881, 9330-00-052-4732, 5305-00-068-9203 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for A-A-52491-81: Bore Smallest Diameter: 2.2500 INCHES MINIMUM AND 2.2510 INCHES MAXIMUM IN; Standard Tolerance Designation: AFBMA STD TOLERANCE FOR THRUST BEARINGS; Alignment Type: RIGID; Surface Finish: GROUND. 10 total characteristics are documented in the Federal Logistics Information System.