The Piston,compressor, cataloged under National Stock Number 4310-00-577-8964, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Atlas Copco Holyoke Inc. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-577-8964 |
| Primary Part Number | PST00412A |
| Item Name | Piston,compressor |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Atlas Copco Holyoke Inc |
| Status | ACTIVE |
| Ring Groove Width | 0.125 INCHES NOMINAL AND 0.188 INCHES NOMINAL IN |
| Distance Between Pin Bosses | 1.765 INCHES NOMINAL IN |
| Integral Connecting Rod | NOT INCLUDED |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | N0. 1,NO. 2,NO. 3 AND NO. 4 POSITIONS PISTON |
| Oil Passage Type | HOLE |
| Diameter | 3.625 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.250 INCHES NOMINAL AND 3.225 INCHES NOMINAL IN |
| Distance From Pin Hole Center to Extreme Top | 1.875 INCHES NOMINAL IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 4 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 1.000 INCHES NOMINAL IN |
| 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 |
| Part Number | Manufacturer |
|---|---|
| PST00412A PRIMARY | Atlas Copco Holyoke Inc (USA) |
| Reference | Meaning |
|---|---|
| HL19884PC16X17 | 5/9 Secondary reference U.S. Government activity |
| 2554N | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-577-8964 is a Piston,compressor, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-577-8964 has 1 manufacturer part number on file: PST00412A (Atlas Copco Holyoke Inc).
Key specifications for PST00412A: Overall Height: 3.138 INCHES NOMINAL IN; Ring Groove Width: 0.125 INCHES NOMINAL AND 0.188 INCHES NOMINAL IN; Distance Between Pin Bosses: 1.765 INCHES NOMINAL IN; Integral Connecting Rod: NOT INCLUDED. 22 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.