The Shaft,straight, cataloged under National Stock Number 3040-01-184-4318, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-184-4318 |
| Primary Part Number | 3G2074 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| First End Diameter | 0.6250 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 0.500 INCHES NOMINAL IN |
| Second End Diameter | 0.6250 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 1.630 INCHES NOMINAL IN |
| First End Style | INDENTED FLAT KEYWAY |
| Second End Keyway Width | 0.1247 INCHES NOMINAL IN |
| First End Keyway Depth | 0.247 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.247 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | STEEL |
| External Keyway Length | 0.765 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 0.765 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.1247 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 |
|---|---|
| 3G2074 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 309935 | 5/9 Secondary reference Johnston Mfg Co |
NSN 3040-01-184-4318 is a Shaft,straight, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-184-4318 has 1 manufacturer part number on file: 3G2074 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 3G2074: First End Diameter: 0.6250 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 0.500 INCHES NOMINAL IN; Second End Diameter: 0.6250 INCHES NOMINAL IN; Second End Distance From Keyway Center to End: 1.630 INCHES NOMINAL IN. 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.