The Shaft Assembly,shouldered, cataloged under National Stock Number 3040-00-903-0997, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Beaver Aerospace & Defense, Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-903-0997 |
| Primary Part Number | B7531A |
| Item Name | Shaft Assembly,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Beaver Aerospace & Defense, Inc. |
| Status | ACTIVE |
| Document Type | ENGINEERING DRAWING |
| Unpackaged Unit Length | 34.31 INCHES MINIMUM AND 34.56 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B7531A PRIMARY | Beaver Aerospace & Defense, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 8433580 | 7/2 Vendor item drawing reference Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| B7531A | 3/9 Design control — primary reference Beaver Precision Products Inc |
NSN 3040-00-903-0997 is a Shaft Assembly,shouldered, manufactured by Beaver Aerospace & Defense, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-903-0997 has 1 manufacturer part number on file: B7531A (Beaver Aerospace & Defense, Inc.).
Key specifications for B7531A: Document Type: ENGINEERING DRAWING; Unpackaged Unit Length: 34.31 INCHES MINIMUM AND 34.56 INCHES MAXIMUM IN; Special Features: NUMBER OF TEETH: 9; PITCH: 16/32; PITCH DIAMETER: .5625"; PRESSURE ANGLE: 30 DEGREES TOTAL; MAJOR DIAMETER: .625"-.005"; Part Name Assigned by Controlling Agency: BALL SCREW ASSY. 2 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.
NSN 3040-00-903-0997 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.