The Extension Shaft, cataloged under National Stock Number 3040-01-391-0862, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-391-0862 |
| Primary Part Number | 3113AS654-1 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Socket Diameter | 0.252 INCHES NOMINAL IN |
| Length | 0.813 INCHES NOMINAL IN |
| Socket Depth | 0.375 INCHES NOMINAL IN |
| Style Designator | PLAIN SOCKET |
| Material Document and Classification | ASTM A 582,COND A ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.562 INCHES NOMINAL IN |
| Shaft End Design | FEMALE AND MALE |
| Shaft End Diameter | 0.252 INCHES NOMINAL IN |
| Nominal Thread Size | 0.112 INCHES SOCKET EXTERNAL IN |
| Thread Quantity Per Inch | 40 SOCKET EXTERNAL |
| Material | STEEL COMP 303 |
| Shoulder Length | 0.437 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SOCKET EXTERNAL |
| End Type | PROCESSED END |
| Shaft End Configuration | ROUND AND FLATTED ROUND |
| Attachment Method | STUD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3113AS654-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 3113AS654 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 3040-01-391-0862 is a Extension Shaft, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-391-0862 has 1 manufacturer part number on file: 3113AS654-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-391-0863. Verify interchangeability with system specifications before substitution.
Key specifications for 3113AS654-1: Socket Diameter: 0.252 INCHES NOMINAL IN; Length: 0.813 INCHES NOMINAL IN; Socket Depth: 0.375 INCHES NOMINAL IN; Style Designator: PLAIN SOCKET. 16 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 3040-01-391-0862 has DEMIL Code B. 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.