The Bushing,sleeve, cataloged under National Stock Number 3120-01-159-6630, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Blair Industries Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-159-6630 |
| Primary Part Number | 74A324903-2005 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Blair Industries Inc |
| Status | ACTIVE |
| Corner Shape | SQUARE INSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | ROUND LEFT FLANGE BODY CORNER |
| Flange Outside Diameter | 4.0000 INCHES NOMINAL IN |
| Body Outside Diameter | 3.5015 INCHES MINIMUM AND 3.5025 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | QQ-C-530,CONDITION AT FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 3.1835 INCHES MINIMUM AND 3.1840 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Antirotation/lubrication Type and Quantity | 4 HOLE |
| Flange Width | 0.1500 INCHES NOMINAL IN |
| Material | COPPER ALLOY 172 OVERALL |
| Surface Groove Location and Quantity | 1 INTERNAL |
| Hole Diameter | 0.0780 INCHES MINIMUM AND 0.0830 INCHES MAXIMUM FIRST IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74A324903-2005 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 74A324903-2005 PRIMARY | Blair Industries Inc (USA) |
| 74A324903-2005 | Safran Landing Systems Canada Inc. (CAN) |
| 74A324903-2005 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74A324903-2005 | Nassau Tool Works, Inc (USA) |
| 74A324903-2005 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A324903-2005 | Heroux-Devtek Inc (CAN) |
| Reference | Meaning |
|---|---|
| 10108153 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A324903-2005 | 3/2 Design control — primary reference U.S. Government activity |
| 74A324903-2003 | 5/9 Secondary reference The Boeing Company Div Defense |
| 74A324903-2005 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
NSN 3120-01-159-6630 is a Bushing,sleeve, manufactured by Blair Industries Inc, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-159-6630 has 7 manufacturer part numbers on file: 74A324903-2005 (Cm Manufacturing Inc Dba Cm Manufacturing Inc), 74A324903-2005 (Blair Industries Inc), 74A324903-2005 (Safran Landing Systems Canada Inc.), 74A324903-2005 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 74A324903-2005 (Nassau Tool Works, Inc) and 2 more.
Key specifications for 74A324903-2005: Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.