The Seat,valve, cataloged under National Stock Number 4820-00-035-9943, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Crane Co Div Valve Div. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-035-9943 |
| Primary Part Number | DB12132 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.562 INCHES NOMINAL IN |
| Flange Diameter | 5.438 INCHES NOMINAL IN |
| Thread Length | 0.688 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Material Document and Classification | ASTM A216,GR. WCB ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Body Inside Diameter | 4.136 INCHES NOMINAL IN |
| Nominal Thread Size | 5.062 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.688 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 16 SINGLE THREADED PORTION |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 1.250 NOMINAL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| DB12132 PRIMARY | Crane Co Div Valve Div (USA) |
NSN 4820-00-035-9943 is a Seat,valve, manufactured by Crane Co Div Valve Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-035-9943 has 1 manufacturer part number on file: DB12132 (Crane Co Div Valve Div).
Key specifications for DB12132: Flange Seat to Disk End Height: 0.562 INCHES NOMINAL IN; Flange Diameter: 5.438 INCHES NOMINAL IN; Thread Length: 0.688 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 14 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.