The Extension Shaft, cataloged under National Stock Number 3040-01-261-2454, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is B.w. Elliott Manufacturing Co., Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-261-2454 |
| Primary Part Number | 12143-102 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | B.w. Elliott Manufacturing Co., Llc |
| Status | ACTIVE |
| Socket Diameter | 0.625 INCHES NOMINAL IN |
| Length | 2.375 INCHES NOMINAL IN |
| Socket Depth | 0.940 INCHES NOMINAL IN |
| Style Designator | PLAIN SOCKET |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Shaft End Design | FEMALE |
| Nominal Thread Size | 0.312 INCHES RECEPTACLE IN |
| Thread Quantity Per Inch | 18 SCREW HOLE |
| Material | STEEL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RECEPTACLE |
| End Type | PROCESSED END |
| Shaft End Configuration | SQUARE |
| 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 |
|---|---|
| 12143-102 PRIMARY | B.w. Elliott Manufacturing Co., Llc (USA) |
| Reference | Meaning |
|---|---|
| 14212-501 | 5/9 Secondary reference Elliott B W Mfg Co Llc Flex Shaft and Valve Control Product Lines |
| S14212-501 | 5/9 Secondary reference B.w. Elliott Manufacturing Co., Llc |
NSN 3040-01-261-2454 is a Extension Shaft, manufactured by B.w. Elliott Manufacturing Co., Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-261-2454 has 1 manufacturer part number on file: 12143-102 (B.w. Elliott Manufacturing Co., Llc).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-542-5865. Verify interchangeability with system specifications before substitution.
Key specifications for 12143-102: Socket Diameter: 0.625 INCHES NOMINAL IN; Length: 2.375 INCHES NOMINAL IN; Socket Depth: 0.940 INCHES NOMINAL IN; Style Designator: PLAIN SOCKET. 12 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.