The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-330-8218, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Waltco Truck Equipment Co Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 3040-01-330-8218 |
| Primary Part Number | 21172-5000 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Waltco Truck Equipment Co Inc |
| Status | ACTIVE |
| Second End Hole Diameter | UNABLE TO DECODE |
| Center to Center Distance Between Mounting Provisions | 22.563 INCHES NOMINAL IN |
| Compressed Length | 22.500 INCHES NOMINAL IN |
| Piston Rod End Similarity | NOT IDENTICAL |
| Extended Length | 32.500 INCHES NOMINAL IN |
| Design Characteristics | SINGLE ACTING SINGLE CYLINDER |
| Second Piston Rod End Style | BUSHING TYPE |
| Body Outside Diameter | 4.500 INCHES NOMINAL IN |
| Mounting Provision Arrangement Style | TWO HOLE |
| First Piston Rod End Style | UNABLE TO DECODE |
| Mounting Provision for Which Designed | UNTHREADED MOUNTING HOLES |
| Bore Diameter | 4.000 INCHES NOMINAL IN |
| First End Outside Diameter | UNABLE TO DECODE |
| 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 |
|---|---|
| 21172-5000 PRIMARY | Waltco Truck Equipment Co Inc (USA) |
| 50413564 | Acs Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| C-7900 | D/9 Drawing number reference only Acs Industries, Inc. |
| 413552 | 5/9 Secondary reference Acs Industries, Inc. |
NSN 3040-01-330-8218 is a Cylinder Assembly,actuating,line, manufactured by Waltco Truck Equipment Co Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-330-8218 has 2 manufacturer part numbers on file: 21172-5000 (Waltco Truck Equipment Co Inc), 50413564 (Acs Industries, Inc.).
Key specifications for 21172-5000: Second End Hole Diameter: UNABLE TO DECODE; Center to Center Distance Between Mounting Provisions: 22.563 INCHES NOMINAL IN; Compressed Length: 22.500 INCHES NOMINAL IN; Piston Rod End Similarity: NOT IDENTICAL. 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.