The Bearing,plain,spherical, cataloged under National Stock Number 3120-01-153-7544, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-153-7544 |
| Primary Part Number | GB528CM1 |
| Item Name | Bearing,plain,spherical |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Style Designator | SOLID |
| Material Document and Classification | AMS 5387 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 1.2495 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN |
| Surface Treatment | PLASTIC POLYTETRAFLUOROETHYLENE INSIDE DIAMETER SURFACE OF BODY |
| Surface Treatment | PLASTIC POLYTETRAFLUOROETHYLENE SPHERICAL SURFACE |
| Material | COBALT COMP 6 OVERALL |
| Spherical Body Diameter | 1.8260 INCHES MINIMUM AND 1.8270 INCHES MAXIMUM 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 |
|---|---|
| VBB004 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GB528CM1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GB528CM1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| GB528CM1 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 3120-01-153-7544 is a Bearing,plain,spherical, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-153-7544 has 2 manufacturer part numbers on file: VBB004 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), GB528CM1 (Northrop Grumman Systems Corporation).
Key specifications for GB528CM1: Corner Shape: SQUARE ALL CORNERS; Style Designator: SOLID; Material Document and Classification: AMS 5387 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Overall Length: 1.0570 INCHES MINIMUM AND 1.0620 INCHES MAXIMUM IN. 8 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.