The Seat,valve, cataloged under National Stock Number 4820-00-482-8449, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 15 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 | 4820-00-482-8449 |
| Primary Part Number | 58D67 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.140 INCHES NOMINAL IN |
| Flange Diameter | 0.250 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-A-250/8 ALLOY 6061 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Body Outside Diameter | 0.208 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Thread Length | 0.280 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.155 INCHES NOMINAL IN |
| Nominal Thread Size | 12.000 INCHES SINGLE THREADED PORTION IN |
| Surface Treatment | ANODIZE OVERALL |
| Under Flange Height | 0.140 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Seat Angle in Deg | 0.500 NOMINAL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) 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 |
|---|---|
| 58D67 PRIMARY | Grimes Aerospace Company (USA) |
NSN 4820-00-482-8449 is a Seat,valve, manufactured by Grimes Aerospace Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-482-8449 has 1 manufacturer part number on file: 58D67 (Grimes Aerospace Company).
Key specifications for 58D67: Flange Seat to Disk End Height: 0.140 INCHES NOMINAL IN; Flange Diameter: 0.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-A-250/8 ALLOY 6061 FED SPEC ALL TREATMENT RESPONSES OVERALL; Body Outside Diameter: 0.208 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN. 15 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.