The Piston,compressor, cataloged under National Stock Number 4310-01-020-7118, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-020-7118 |
| Item Name | Piston,compressor |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Status | ACTIVE |
| Ring Groove Width | 0.248 INCHES NOMINAL AND 0.371 INCHES NOMINAL IN |
| Integral Connecting Rod | NOT INCLUDED |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NO1,NO.2,NO.3,AND NO.4 PISTON |
| Diameter | 8.125 INCHES NOMINAL IN |
| Ring Groove Diameter | 7.094 INCHES NOMINAL AND 7.687 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 3 AND 1 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM ALLOY |
| Skirt Type | SOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| PST599A | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| PST599A | 5/9 Secondary reference U.S. Government activity |
| PST599A | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 4310-01-020-7118 is a Piston,compressor, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
Key specifications for 4310-01-020-7118: Overall Height: 2.375 INCHES NOMINAL IN; Ring Groove Width: 0.248 INCHES NOMINAL AND 0.371 INCHES NOMINAL IN; Integral Connecting Rod: NOT INCLUDED; Retaining Ring Groove: NOT INCLUDED. 17 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.