The Shaft,shouldered, cataloged under National Stock Number 3040-00-972-8576, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-972-8576 |
| Primary Part Number | 547A002980 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.1872 INCHES MINIMUM AND 0.1874 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.275 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.2050 INCHES MINIMUM AND 0.2100 INCHES MAXIMUM IN |
| First End Groove Diameter | 0.1730 INCHES MINIMUM AND 0.1770 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 |
| First End Groove Width | 0.0300 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN |
| Second End Internal Thread Length | 0.2500 INCHES NOMINAL 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 |
|---|---|
| 547A002980 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 002980 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| A547-538 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 547A002980 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. Div L3 Keo |
| A-547.538 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. Div L3 Keo |
NSN 3040-00-972-8576 is a Shaft,shouldered, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-972-8576 has 3 manufacturer part numbers on file: 547A002980 (Northrop Grumman Systems Corporation), 002980 (L3 Technologies, Inc. Div L3 Keo), A547-538 (L3 Technologies, Inc. Div L3 Keo).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-590-2358. Verify interchangeability with system specifications before substitution.
Key specifications for 547A002980: Step Quantity: 3; First End Diameter: 0.1872 INCHES MINIMUM AND 0.1874 INCHES MAXIMUM IN; Largest Step Diameter: 0.275 INCHES NOMINAL IN; First End Style: CIRCULAR GROOVED. 11 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.