The Piston Assy 5th Stg, cataloged under National Stock Number 4310-01-571-2047, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4310-01-571-2047 |
| Primary Part Number | A8-A9551 OXYGEN CLEAN CP |
| Item Name | Piston Assy 5th Stg |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| A8-A9551 OXYGEN CLEAN CP | Naval Inventory Control Point Mechanicsburg (USA) |
| B8506 ITEM 5 OXYGEN CLEANCP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| B8506 ITEM 5 OXYGEN CLEAN | 5/1 Secondary reference Rix Industries |
| A8-A9551 OXYGEN CLEAN | 3/1 Design control — primary reference Rix Industries |
NSN 4310-01-571-2047 is a Piston Assy 5th Stg, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-571-2047 has 2 manufacturer part numbers on file: A8-A9551 OXYGEN CLEAN CP (Naval Inventory Control Point Mechanicsburg), B8506 ITEM 5 OXYGEN CLEANCP (Naval Inventory Control Point Mechanicsburg).
Key specifications for A8-A9551 OXYGEN CLEAN CP: Criticality Code Justification: ZZZY; Special Features: COMPRESSOR. SSR NAME IS PISTON ASSY; Part Name Assigned by Controlling Agency: PISTON ASSY, 5TH STAGE NGEN-30S; End Item Identification: BOOST COMPRESSOR ASSEMBLY. 2 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.