The Shaft,straight, cataloged under National Stock Number 3040-01-425-6864, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Designatronics Incorporated Div Sterling Instruments Div. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-425-6864 |
| Primary Part Number | S4012Y-US2-17 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Designatronics Incorporated Div Sterling Instruments Div |
| Status | ACTIVE |
| Surface Finish | 16.0 MICROINCHES |
| First End Diameter | 0.18720 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 303 |
| 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 |
|---|---|
| S4012Y-US2-17 PRIMARY | Designatronics Incorporated Div Sterling Instruments Div (USA) |
| 12373385-2 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12373385 | 7/1 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 12373385-2 | C/1 Advisory reference — outside the item-of-supply concept General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc |
| AAS-A7-10 | 5/9 Secondary reference Nordex Inc |
| 12373385-2 | 5/9 Secondary reference General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| S3-21-U | 5/9 Secondary reference W. M. Berg, Inc. |
| AAS-A7-10 | C/1 Advisory reference — outside the item-of-supply concept Nordex, Incorporated Dba Nordex Inc |
NSN 3040-01-425-6864 is a Shaft,straight, manufactured by Designatronics Incorporated Div Sterling Instruments Div, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-425-6864 has 2 manufacturer part numbers on file: S4012Y-US2-17 (Designatronics Incorporated Div Sterling Instruments Div), 12373385-2 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-466-3191. Verify interchangeability with system specifications before substitution.
Key specifications for S4012Y-US2-17: Surface Finish: 16.0 MICROINCHES; First End Diameter: 0.18720 INCHES NOMINAL IN; First End Style: PLAIN; Material Document and Classification: ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE. 6 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.