The Shaft,straight, cataloged under National Stock Number 3040-01-234-4858, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-234-4858 |
| Primary Part Number | 21754-1A |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc |
| Status | ACTIVE |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 21754-1A PRIMARY | Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc (USA) |
| H3288D ITEM 47 | Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc (USA) |
| 21754-A | Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc (USA) |
| Reference | Meaning |
|---|---|
| H-3074-D | D/9 Drawing number reference only Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc |
NSN 3040-01-234-4858 is a Shaft,straight, manufactured by Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-234-4858 has 3 manufacturer part numbers on file: 21754-1A (Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc), H3288D ITEM 47 (Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc), 21754-A (Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc).
Key specifications for 21754-1A: Material: NICKEL ALLOY. 1 specification is 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.