The Piston,compressor, cataloged under National Stock Number 4310-01-079-6938, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Cummins Inc.. Government technical data includes 21 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-079-6938 |
| Primary Part Number | 165430 |
| Item Name | Piston,compressor |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Ring Groove Width | 0.127 INCHES MAXIMUM AND 0.189 INCHES MAXIMUM IN |
| Distance Between Pin Bosses | 1.220 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Integral Connecting Rod | NOT INCLUDED |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NO. 1,NO. 2,AND NO.3 POSITIONS PISTON |
| Oil Passage Type | HOLE |
| Ring Groove Diameter | 3.265 INCHES MAXIMUM AND 3.000 INCHES MAXIMUM IN |
| Distance From Pin Hole Center to Extreme Top | 1.318 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 3 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 1.050 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 165430 PRIMARY | Cummins Inc. (USA) |
NSN 4310-01-079-6938 is a Piston,compressor, manufactured by Cummins Inc., classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-079-6938 has 1 manufacturer part number on file: 165430 (Cummins Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-411-8243. Verify interchangeability with system specifications before substitution.
Key specifications for 165430: Overall Height: 2.015 INCHES MINIMUM AND 2.025 INCHES MAXIMUM IN; Ring Groove Width: 0.127 INCHES MAXIMUM AND 0.189 INCHES MAXIMUM IN; Distance Between Pin Bosses: 1.220 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Integral Connecting Rod: NOT INCLUDED. 21 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.