The Seat,valve, cataloged under National Stock Number 4820-01-415-4756, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-415-4756 |
| Primary Part Number | 298-00-204 PIECE 36Q3 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Body Outside Diameter | 3.307 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER D NOMINAL OVERALL |
| Criticality Code Justification | ZZZY |
| Style Designator | PLAIN |
| Reference Number Differentiating Characteristics | ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 298-00-204 PIECE 36Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 298-00-204 PIECE 36 | 3/9 Design control — primary reference Circor Intl Inc |
NSN 4820-01-415-4756 is a Seat,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-415-4756 has 1 manufacturer part number on file: 298-00-204 PIECE 36Q3 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 298-00-204 PIECE 36Q3: Overall Height: 0.525 INCHES MAXIMUM IN; Body Outside Diameter: 3.307 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER D NOMINAL OVERALL; Criticality Code Justification: ZZZY. 5 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.
NSN 4820-01-415-4756 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.