The Seat,valve, cataloged under National Stock Number 4820-01-197-8256, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ingersoll-Rand Company Dba Ingersoll-Rand. Government technical data includes 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-197-8256 |
| Primary Part Number | 30217962 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.129 INCHES NOMINAL IN |
| Flange Diameter | 0.505 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 0.250 INCHES NOMINAL IN |
| Nominal Thread Size | 0.437 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.547 INCHES NOMINAL IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Material | ALUMINUM OVERALL |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 30217962 PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
| Reference | Meaning |
|---|---|
| 3W56279 | C/1 Advisory reference — outside the item-of-supply concept Ingersoll Rand Co |
| 3W56279 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3W56279 | C/1 Advisory reference — outside the item-of-supply concept Ingersoll-Rand Company Dba Ingersoll-Rand |
| W56279 | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand |
NSN 4820-01-197-8256 is a Seat,valve, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-197-8256 has 1 manufacturer part number on file: 30217962 (Ingersoll-Rand Company Dba Ingersoll-Rand).
Key specifications for 30217962: Flange Seat to Disk End Height: 0.129 INCHES NOMINAL IN; Flange Diameter: 0.505 INCHES NOMINAL IN; Thread Length: 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 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.