The Piston,compressor, cataloged under National Stock Number 4130-01-059-1765, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Hartford Compressors Inc. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4130-01-059-1765 |
| Primary Part Number | PST106A |
| Item Name | Piston,compressor |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Hartford Compressors Inc |
| Status | ACTIVE |
| Integral Connecting Rod | NOT INCLUDED |
| Ring Groove Position and Quantity | NO.1,NO. 2,AND NO. 3 PISTON |
| Diameter | 3.562 INCHES NOMINAL IN |
| Pin | INCLUDED |
| Oil Groove | INCLUDED |
| Head Style | HUMP |
| Ring Groove Quantity | 3 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Ring | INCLUDED |
| Material | ALUMINUM AND STEEL |
| 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 |
|---|---|
| PST106A PRIMARY | Hartford Compressors Inc (USA) |
| A5-PST106A | Hartford Compressors Inc (USA) |
NSN 4130-01-059-1765 is a Piston,compressor, manufactured by Hartford Compressors Inc, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-01-059-1765 has 2 manufacturer part numbers on file: PST106A (Hartford Compressors Inc), A5-PST106A (Hartford Compressors Inc).
Key specifications for PST106A: Overall Height: 2.938 INCHES NOMINAL IN; Integral Connecting Rod: NOT INCLUDED; Ring Groove Position and Quantity: NO.1,NO. 2,AND NO. 3 PISTON; Diameter: 3.562 INCHES NOMINAL IN. 11 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.