The Ball,valve,ported, cataloged under National Stock Number 4820-01-553-4889, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ham-Let Usa, Inc. Dba Hamlet Valves & Fittings. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-553-4889 |
| Primary Part Number | H710SSN1/4 |
| Item Name | Ball,valve,ported |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ham-Let Usa, Inc. Dba Hamlet Valves & Fittings |
| Status | ACTIVE |
| Port Configuration | TEE |
| Stem Accommodation Quantity | 1 |
| Port Quantity | 2 |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 426L64911-M00 | Johnson Controls Ltd, York Navy Systems (GBR) |
| 268L65020-M00 | Johnson Controls Ltd, York Navy Systems (GBR) |
| H710SSN1/4 PRIMARY | Ham-Let Usa, Inc. Dba Hamlet Valves & Fittings (USA) |
NSN 4820-01-553-4889 is a Ball,valve,ported, manufactured by Ham-Let Usa, Inc. Dba Hamlet Valves & Fittings, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-553-4889 has 3 manufacturer part numbers on file: 426L64911-M00 (Johnson Controls Ltd, York Navy Systems), 268L65020-M00 (Johnson Controls Ltd, York Navy Systems), H710SSN1/4 (Ham-Let Usa, Inc. Dba Hamlet Valves & Fittings).
Key specifications for H710SSN1/4: Port Configuration: TEE; Stem Accommodation Quantity: 1; Port Quantity: 2; Special Features: NPT THREAD, 1/4 INCH FEMALE END CONNECTIONS, 3.625 INCHES OVERALL LENGTH IN. 4 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.