The Shaft,shouldered, cataloged under National Stock Number 3040-00-997-1690, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Drs C3 & Aviation Company Dba Drs Data & Imaging Systems. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-997-1690 |
| Primary Part Number | C13720 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Drs C3 & Aviation Company Dba Drs Data & Imaging Systems |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 6 |
| First End Diameter | 0.4530 INCHES NOMINAL IN |
| Second End Diameter | 0.2498 INCHES NOMINAL IN |
| Largest Step Diameter | 0.453 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Groove Diameter | 0.2280 INCHES MINIMUM AND 0.2310 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0400 INCHES MINIMUM AND 0.0430 INCHES MAXIMUM IN |
| Second End Distance From End to Groove | 0.059 INCHES NOMINAL IN |
| Second End Style | TWO CIRCULAR GROOVES |
| Material | STEEL COMP 303 |
| Second End Distance Between First and Second Groove Centers | 0.355 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 |
|---|---|
| C13720 PRIMARY | Drs C3 & Aviation Company Dba Drs Data & Imaging Systems (USA) |
| Reference | Meaning |
|---|---|
| C13720 | C/1 Advisory reference — outside the item-of-supply concept Omex |
NSN 3040-00-997-1690 is a Shaft,shouldered, manufactured by Drs C3 & Aviation Company Dba Drs Data & Imaging Systems, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-997-1690 has 1 manufacturer part number on file: C13720 (Drs C3 & Aviation Company Dba Drs Data & Imaging Systems).
Key specifications for C13720: Surface Finish: 32.0 MICROINCHES; Step Quantity: 6; First End Diameter: 0.4530 INCHES NOMINAL IN; Second End Diameter: 0.2498 INCHES NOMINAL IN. 13 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.