The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-309-7522, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Milwaukee Cylinder Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-309-7522 |
| Primary Part Number | D-6600 W/B6600-D CAM |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Milwaukee Cylinder Inc |
| Status | ACTIVE |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Extended Length | 53.125 INCHES NOMINAL IN |
| Design Characteristics | DOUBLE ACTING TWIN CYLINDER |
| Mounting Provision Arrangement Style | FOUR HOLE RECTANGULAR |
| First Piston Rod End Style | UNABLE TO DECODE |
| Longest Vertical Distance Between Mounting Centers | 6.500 INCHES NOMINAL IN |
| Mounting Provision for Which Designed | UNTHREADED MOUNTING HOLES |
| Integral Valve Operation Method | HYDRAULIC |
| Longest Horizontal Distance Between Mounting Centers | 14.625 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| D-6600 W/B6600-D CAM | Milwaukee Cylinder Inc (USA) |
| Reference | Meaning |
|---|---|
| B-6600-D | 3/9 Design control — primary reference Milwaukee Cylinder Inc |
| D-6600 W/CAM | 5/9 Secondary reference Milwaukee Cylinder Inc |
| D-6600 | 5/9 Secondary reference Milwaukee Cylinder Inc |
NSN 3040-01-309-7522 is a Cylinder Assembly,actuating,line, manufactured by Milwaukee Cylinder Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-309-7522 has 1 manufacturer part number on file: D-6600 W/B6600-D CAM (Milwaukee Cylinder Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4320-01-519-8186, 3040-01-552-4180. Verify interchangeability with system specifications before substitution.
Key specifications for D-6600 W/B6600-D CAM: Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Extended Length: 53.125 INCHES NOMINAL IN; Design Characteristics: DOUBLE ACTING TWIN CYLINDER; Mounting Provision Arrangement Style: FOUR HOLE RECTANGULAR. 9 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 3040-01-309-7522 has DEMIL Code Q. 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.