The Shaft,straight, cataloged under National Stock Number 3040-01-160-3612, 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 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-160-3612 |
| Primary Part Number | 709-4684920 ITEM 7 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Diameter | 0.7470 INCHES MINIMUM AND 0.7480 INCHES MAXIMUM IN |
| Second End Diameter | 0.7470 INCHES MINIMUM AND 0.7480 INCHES MAXIMUM IN |
| Second End Spline Minor Diameter | 0.6390 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Second End Spline Major Diameter | 0.7480 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763,COND B FED SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.104 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 10 |
| Second End Style | SPLINED (STRAIGHT) |
| Material | STEEL COMP 304 |
| External Keyway Length | 1.844 INCHES NOMINAL FIRST END IN |
| Second End Spline Length | 2.125 INCHES NOMINAL IN |
| First End Keyway Width | 0.1880 INCHES MINIMUM AND 0.1900 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 |
|---|---|
| 709-4684920 ITEM 7 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87832-1649 | D/9 Drawing number reference only U.S. Government activity |
| 709-4684920 | D/9 Drawing number reference only Naval Sea Systems Command |
| 87832-1649 ITEM 7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-160-3612 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-160-3612 has 1 manufacturer part number on file: 709-4684920 ITEM 7 (Naval Sea Systems Command).
Key specifications for 709-4684920 ITEM 7: First End Diameter: 0.7470 INCHES MINIMUM AND 0.7480 INCHES MAXIMUM IN; Second End Diameter: 0.7470 INCHES MINIMUM AND 0.7480 INCHES MAXIMUM IN; Second End Spline Minor Diameter: 0.6390 INCHES NOMINAL IN; First End Style: FLAT KEYWAY. 14 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.