The Cylinder Sleeve, cataloged under National Stock Number 4320-01-414-8057, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 20 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 | 4320-01-414-8057 |
| Primary Part Number | 6138839 |
| Item Name | Cylinder Sleeve |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Undercut Diameter | 1.6247 INCHES NOMINAL IN |
| Chamfer Length | 0.062 INCHES NOMINAL IN |
| Bottom Chamfer Length | 0.062 INCHES NOMINAL IN |
| Flange Thickness | 0.188 INCHES NOMINAL IN |
| Design Type | WET |
| Expanded Diameter | 1.749 INCHES NOMINAL IN |
| Largest Outside Diameter Under Flange | 1.562 INCHES NOMINAL IN |
| Body Outside Diameter | 1.469 INCHES NOMINAL IN |
| Top Intake Port | NOT INCLUDED |
| Style Designator | WET, SHOULDERED, FLANGED |
| Top Inside Chamfer | INCLUDED |
| Valve Recess | NOT INCLUDED |
| Body Length | 12.375 INCHES NOMINAL IN |
| Intake Hole | NOT INCLUDED |
| Chamfer Angle in Deg | 30.0 |
| Bottom Inside Chamfer | INCLUDED |
| Bore Diameter | 1.125 INCHES NOMINAL IN |
| Material | STEEL |
| Flange Outside Diameter | 3.750 INCHES NOMINAL IN |
| Bottom Chamfer Angle in Deg | 30.0 |
| 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 |
|---|---|
| 6138839 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4320-01-414-8057 is a Cylinder Sleeve, manufactured by Naval Sea Systems Command, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-414-8057 has 1 manufacturer part number on file: 6138839 (Naval Sea Systems Command).
Key specifications for 6138839: Undercut Diameter: 1.6247 INCHES NOMINAL IN; Chamfer Length: 0.062 INCHES NOMINAL IN; Bottom Chamfer Length: 0.062 INCHES NOMINAL IN; Flange Thickness: 0.188 INCHES NOMINAL IN. 20 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.