The Stop,piston, cataloged under National Stock Number 4810-01-028-1459, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4810-01-028-1459 |
| Primary Part Number | 649750 |
| Item Name | Stop,piston |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM; 1.000 IN. OD,0.188 IN. THK; 0.500 IN. ID TAPERED TO 0.268 IN. AT 45 DEG ANGLE IN |
| 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 |
|---|---|
| 649750 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 649750 | 5/9 Secondary reference U.S. Government activity |
NSN 4810-01-028-1459 is a Stop,piston, manufactured by Parker-Hannifin Corporation Dba Pneutronics, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-028-1459 has 1 manufacturer part number on file: 649750 (Parker-Hannifin Corporation Dba Pneutronics).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-478-4013. Verify interchangeability with system specifications before substitution.
Key specifications for 649750: General Characteristics Item Description: ALUMINUM; 1.000 IN. OD,0.188 IN. THK; 0.500 IN. ID TAPERED TO 0.268 IN. AT 45 DEG ANGLE IN. 1 specification is 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.