The Shaft,straight, cataloged under National Stock Number 3040-01-172-5991, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-172-5991 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Second End External Thread Length | 1.500 INCHES NOMINAL IN |
| First End Diameter | 1.0000 INCHES NOMINAL IN |
| Second End Diameter | 1.0000 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-763 CL304 COND B FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.8000 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.3800 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 1.500 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 87832-0320 ITEM 20 | 5/2 Secondary reference U.S. Government activity |
| 709-4684860 ITEM 20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-172-5991 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-172-5991: Surface Finish: 125.0 MICROINCHES; Second End External Thread Length: 1.500 INCHES NOMINAL IN; First End Diameter: 1.0000 INCHES NOMINAL IN; Second End Diameter: 1.0000 INCHES NOMINAL IN. 12 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 3040-01-172-5991 has DEMIL Code Q. 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.