The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-254-4637, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Bellofram Corporation. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-254-4637 |
| Primary Part Number | S4-F-BP-CBS-NS |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Extended Length | 9.070 INCHES NOMINAL IN |
| Design Characteristics | SINGLE ACTING SINGLE CYLINDER |
| Overall Diameter | 3.020 INCHES NOMINAL IN |
| First Piston Rod End Thread Quantity Per Inch | 24 |
| Mounting Facility Length | 3.120 INCHES NOMINAL IN |
| Mounting Provision Arrangement Style | FOUR HOLE SQUARE |
| First Piston Rod End Style | EXTERNAL THREADED |
| Longest Vertical Distance Between Mounting Centers | 2.380 INCHES NOMINAL IN |
| First Piston Rod End Thread Series Designator | NPT |
| Mounting Provision for Which Designed | UNTHREADED MOUNTING HOLES |
| Integral Valve Operation Method | PNEUMATIC |
| First Piston Rod End Thread Diameter | 0.375 INCHES NOMINAL IN |
| Longest Horizontal Distance Between Mounting Centers | 2.380 INCHES NOMINAL IN |
| 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 |
|---|---|
| S4-F-BP-CBS-NS PRIMARY | Bellofram Corporation (USA) |
NSN 3040-01-254-4637 is a Cylinder Assembly,actuating,line, manufactured by Bellofram Corporation, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-254-4637 has 1 manufacturer part number on file: S4-F-BP-CBS-NS (Bellofram Corporation).
Key specifications for S4-F-BP-CBS-NS: Extended Length: 9.070 INCHES NOMINAL IN; Design Characteristics: SINGLE ACTING SINGLE CYLINDER; Overall Diameter: 3.020 INCHES NOMINAL IN; First Piston Rod End Thread Quantity Per Inch: 24. 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.