The Bearing Half,sleeve, cataloged under National Stock Number 3120-00-448-3472, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 14 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-448-3472 |
| Primary Part Number | 21-256 |
| Item Name | Bearing Half,sleeve |
| FSC / FSG | 3120 / 31 — No Item Name Available |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Body Inside Diameter | 2.4380 INCHES MINIMUM AND 2.4385 INCHES MAXIMUM IN |
| Style Designator | HALF SLEEVE, EXTERNAL FLANGES BOTH ENDS |
| Right Flange Outside Diameter | 3.3125 INCHES NOMINAL IN |
| Locking Lug Width | 0.1750 INCHES MINIMUM AND 0.1800 INCHES MAXIMUM IN |
| Body Outside Diameter | 2.6240 INCHES MINIMUM AND 2.6250 INCHES MAXIMUM IN |
| Locking Lug Length | 0.1875 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM IN |
| Left Flange Outside Diameter | 3.3125 INCHES NOMINAL IN |
| Distance From Lug End to End of Bearing | 0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN |
| Right Flange Width | 0.0875 INCHES MINIMUM AND 0.0895 INCHES MAXIMUM IN |
| Left Flange Width | 0.0875 INCHES MINIMUM AND 0.0895 INCHES MAXIMUM IN |
| Antirotation/lubrication Type and Quantity | 1 HOLE |
| Locking Lug Height | 0.0450 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN |
| Lubricant Accommodation Style | GROOVED CIRCULAR |
| Surface Groove Location and Quantity | 1 INTERNAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21-256 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
NSN 3120-00-448-3472 is a Bearing Half,sleeve, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 3120 (No Item Name Available). Status: active.
NSN 3120-00-448-3472 has 1 cross-referenced part number: 21-256 (Dresser Industries Inc Leroi Div).
There are 5 known substitutes for 3120-00-448-3472: 5110-00-194-5982, 5999-00-368-1054, 5977-00-799-8136 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21-256: Body Inside Diameter: 2.4380 INCHES MINIMUM AND 2.4385 INCHES MAXIMUM IN; Style Designator: HALF SLEEVE, EXTERNAL FLANGES BOTH ENDS; Right Flange Outside Diameter: 3.3125 INCHES NOMINAL IN; Locking Lug Width: 0.1750 INCHES MINIMUM AND 0.1800 INCHES MAXIMUM IN. 15 total characteristics are documented in the Federal Logistics Information System.