The Piston,compressor, cataloged under National Stock Number 4310-00-463-2830, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Gast Mfg Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-463-2830 |
| Primary Part Number | AF561 |
| Item Name | Piston,compressor |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Gast Mfg Corp |
| Status | ACTIVE |
| Ring Groove Width | 0.125 INCHES NOMINAL IN |
| Distance Between Pin Bosses | 1.5000 INCHES NOMINAL IN |
| Integral Connecting Rod | INCLUDED |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NO. 1,AND NO. 2 POSITIONS PISTON |
| Diameter | 2.343 INCHES NOMINAL IN |
| Ring Groove Diameter | 2.078 INCHES NOMINAL IN |
| Distance From Pin Hole Center to Extreme Top | 1.093 INCHES NOMINAL IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 2 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 0.500 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| 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 |
|---|---|
| AF561 PRIMARY | Gast Mfg Corp (USA) |
| Reference | Meaning |
|---|---|
| A23640-1 | 5/9 Secondary reference Spx Corporation Dba Dielectric Communications Div Spx Communication Technologies |
NSN 4310-00-463-2830 is a Piston,compressor, manufactured by Gast Mfg Corp, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-463-2830 has 1 manufacturer part number on file: AF561 (Gast Mfg Corp).
Key specifications for AF561: Overall Height: 1.671 INCHES NOMINAL IN; Ring Groove Width: 0.125 INCHES NOMINAL IN; Distance Between Pin Bosses: 1.5000 INCHES NOMINAL IN; Integral Connecting Rod: 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.