The Seat,valve, cataloged under National Stock Number 4820-01-066-7599, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Todd Combustion Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-066-7599 |
| Primary Part Number | D34855PC8 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Todd Combustion Inc |
| Status | ACTIVE |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Style Designator | THREADED FLANGED |
| Material | STEEL OVERALL |
| Seal Accommodation Type | GROOVED |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Under Flange Height | 0.755 INCHES NOMINAL IN |
| Nominal Thread Size | 1.312 INCHES SINGLE THREADED PORTION IN |
| Seat Angle in Deg | 45.000 NOMINAL |
| Body Inside Diameter | 0.820 INCHES NOMINAL IN |
| Seating Surface Shape | ANGULAR |
| Flange Seat to Disk End Height | 0.250 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 12 SINGLE THREADED PORTION |
| Flange Diameter | 1.630 INCHES NOMINAL IN |
| Thread Length | 0.562 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-066-7599 is a Seat,valve, manufactured by Todd Combustion Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-066-7599 has 3 cross-referenced part numbers: D34855PC8 (Todd Combustion Inc), F2-1-23 (Todd Combustion Inc), 11766 (Todd Combustion Inc).
There are 8 known substitutes for 4820-01-066-7599: 5999-00-231-3882, 6810-00-270-3219, 4010-00-740-9808 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for D34855PC8: Thread Series Designator: UN SINGLE THREADED PORTION; Style Designator: THREADED FLANGED; Material: STEEL OVERALL; Special Features: ONE GROOVE ON TOP 0.188 IN. W,.0.125 IN. DEEP IN. 15 total characteristics are documented in the Federal Logistics Information System.