The Shaft,shouldered, cataloged under National Stock Number 3040-00-557-8136, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-557-8136 |
| Primary Part Number | 8348921 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Finish | 100.0 MICROINCHES |
| Second End Hole Diameter | 0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN |
| Step Quantity | 5 |
| First End Diameter | 2.7540 INCHES MINIMUM AND 2.7550 INCHES MAXIMUM IN |
| Second End Diameter | 2.9960 INCHES MINIMUM AND 2.9970 INCHES MAXIMUM IN |
| Largest Step Diameter | 2.996 INCHES MINIMUM AND 2.997 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Material Document and Classification | SPEC QQ-S-633 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 1.599 INCHES MINIMUM AND 1.619 INCHES MAXIMUM IN |
| Second End Hole Depth | 0.440 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | UNTHREADED CROSS DRILLED |
| Material | STEEL COMP 1117 |
| 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 |
|---|---|
| 8348921 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-00-557-8136 is a Shaft,shouldered, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-557-8136 has 1 manufacturer part number on file: 8348921 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8348921: Surface Finish: 100.0 MICROINCHES; Second End Hole Diameter: 0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN; Step Quantity: 5; First End Diameter: 2.7540 INCHES MINIMUM AND 2.7550 INCHES MAXIMUM 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.