The Bearing Half,sleeve, cataloged under National Stock Number 3120-00-338-7249, 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 15 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-338-7249 |
| Primary Part Number | 21-407 |
| Item Name | Bearing Half,sleeve |
| FSC / FSG | 3120 / 31 — No Item Name Available |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Slot Length | 2.6250 INCHES NOMINAL FIRST IN |
| Lubricant Accommodation Style | GROOVED SPIRAL CIRCULAR |
| Distance From Lug End to End of Bearing | 0.3480 INCHES NOMINAL IN |
| Hole Diameter | 0.2500 INCHES NOMINAL FIRST IN |
| Material | TIN ALLOY INNER LAYER |
| Antirotation/lubrication Type and Quantity | 1 HOLE AND 1 SLOT |
| Locking Lug Height | 0.0450 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN |
| Locking Lug Width | 0.1750 INCHES MINIMUM AND 0.1800 INCHES MAXIMUM IN |
| Body Inside Diameter | 2.5553 INCHES NOMINAL IN |
| Corner Shape | ROUND ALL CORNERS |
| Slot Width | 0.1880 INCHES NOMINAL FIRST IN |
| Locking Lug Length | 0.2190 INCHES NOMINAL IN |
| Style Designator | HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES |
| Body Outside Diameter | 2.6250 INCHES NOMINAL IN |
| Material | STEEL OUTER LAYER |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21-407 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
NSN 3120-00-338-7249 is a Bearing Half,sleeve, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 3120 (No Item Name Available). Status: active.
NSN 3120-00-338-7249 has 1 cross-referenced part number: 21-407 (Dresser Industries Inc Leroi Div).
There are 4 known substitutes for 3120-00-338-7249: 5841-00-546-7102, 5340-00-911-8176, 6125-01-197-7041 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21-407: Slot Length: 2.6250 INCHES NOMINAL FIRST IN; Lubricant Accommodation Style: GROOVED SPIRAL CIRCULAR; Distance From Lug End to End of Bearing: 0.3480 INCHES NOMINAL IN; Hole Diameter: 0.2500 INCHES NOMINAL FIRST IN. 16 total characteristics are documented in the Federal Logistics Information System.