The Shaft,straight, cataloged under National Stock Number 3040-01-448-8570, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-448-8570 |
| Primary Part Number | 167-6404610 FIND 20 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Diameter | 0.4980 INCHES NOMINAL IN |
| First End Slot Width | 0.1200 INCHES NOMINAL IN |
| First End Style | SLOTTED AND INTERNALLY THREADED |
| First End Internal Thread Length | 0.3800 INCHES NOMINAL IN |
| Material Document and Classification | QQ-B-750, COMP A FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| First End Slot Depth | 0.3800 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 167-6404610 FIND 20 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| DF1502-238 FIND 20 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 6404610 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-448-8570 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-448-8570 has 1 manufacturer part number on file: 167-6404610 FIND 20 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 3040-01-448-8770, 3040-01-448-8778, 3040-01-448-8781. Verify interchangeability with system specifications before substitution.
Key specifications for 167-6404610 FIND 20: First End Diameter: 0.4980 INCHES NOMINAL IN; First End Slot Width: 0.1200 INCHES NOMINAL IN; First End Style: SLOTTED AND INTERNALLY THREADED; First End Internal Thread Length: 0.3800 INCHES NOMINAL 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.
NSN 3040-01-448-8570 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.