The Bushing,sleeve, cataloged under National Stock Number 3120-01-503-3979, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-503-3979 |
| Primary Part Number | MB15-9081-MR-385 8IN P/N5 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp |
| Status | ACTIVE |
| Body Outside Diameter | 8.6250 INCHES NOMINAL IN |
| Style Designator | BLANK, EXTERNAL FLANGES BOTH ENDS |
| Body Inside Diameter | 7.5000 INCHES NOMINAL IN |
| Left Flange Outside Diameter | 11.0000 INCHES NOMINAL IN |
| Material | NICKEL ALLOY OVERALL |
| 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 |
|---|---|
| MB15-9081-MR-385 8IN P/N5 PRIMARY | Emerson Automation Solutions Final Control Us Lp (USA) |
| Reference | Meaning |
|---|---|
| MB15-CS-R 8IN P/N5 | 5/1 Secondary reference Emerson Automation Solutions Final Control Us Lp |
| MB15-9081-MR-385 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp |
NSN 3120-01-503-3979 is a Bushing,sleeve, manufactured by Emerson Automation Solutions Final Control Us Lp, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-503-3979 has 1 manufacturer part number on file: MB15-9081-MR-385 8IN P/N5 (Emerson Automation Solutions Final Control Us Lp).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-503-3982. Verify interchangeability with system specifications before substitution.
Key specifications for MB15-9081-MR-385 8IN P/N5: Body Outside Diameter: 8.6250 INCHES NOMINAL IN; Style Designator: BLANK, EXTERNAL FLANGES BOTH ENDS; Overall Length: 9.0000 INCHES NOMINAL IN; Body Inside Diameter: 7.5000 INCHES NOMINAL IN. 5 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.