The Collar,shaft, cataloged under National Stock Number 3040-00-480-7539, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Collar,shaft |
| FSC / FSG | 3040 — Miscellaneous Power Transmission Equipment (FSG 30) |
| Manufacturers | Mil-Craft Mfg., Inc. (CAGE 50036); Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (CAGE 77445); Federal Industries, Inc. Dba Federal Industries Inc (CAGE 65506) |
| Parameter | Value |
|---|---|
| NSN | 3040-00-480-7539 |
| Primary Part Number | 657561 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| 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 |
|---|---|
| 536P07561 | Mil-Craft Mfg., Inc. (USA) |
| 657561 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 657561 | Federal Industries, Inc. Dba Federal Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 657561 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 657561 | 5/9 Secondary reference Royal Oak Gage, Inc |
NSN 3040-00-480-7539 is a Collar,shaft, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-480-7539 has 3 manufacturer part numbers on file: 536P07561 (Mil-Craft Mfg., Inc.), 657561 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 657561 (Federal Industries, Inc. Dba Federal Industries Inc).
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.