The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-937-9186, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-937-9186 |
| Primary Part Number | MS21231-4 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — No Item Name Available |
| Manufacturer | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Bore Diameter | 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM INNER MEMBER |
| Style Designator | WITH INSERT AND/OR LINER |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OR GLASS RACE LINER |
| Material | STEEL COMP 440C INNER MEMBER |
| Outer Member Outside Diameter | 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| Static Radial Load Rating | 9000 POUNDS LBS |
| Outer Member Width | 0.3220 INCHES MINIMUM AND 0.3320 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OUTER RACE MEMBER |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM OUTER RACE MEMBER |
| Inner Member Width | 0.4350 INCHES MINIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS21231-4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 3120-00-937-9186 is a Bearing,plain,self-Aligning, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3120 (No Item Name Available). Status: active.
NSN 3120-00-937-9186 has 1 cross-referenced part number: MS21231-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).
There is 1 known substitute for 3120-00-937-9186: 3120-01-015-6923. Verify interchangeability with system specifications before substitution.
Key specifications for MS21231-4: Bore Diameter: 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN; Hardness Rating: 55.0 ROCKWELL C MINIMUM INNER MEMBER; Style Designator: WITH INSERT AND/OR LINER; Material: PLASTIC POLYTETRAFLUOROETHYLENE OR GLASS RACE LINER. 11 total characteristics are documented in the Federal Logistics Information System.