The Valve,pressure Relief, cataloged under National Stock Number 2935-01-203-1864, is classified within Federal Supply Class 2935 (Engine System Cooling Components, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Ametek Thermal Systems Inc. Government technical data includes 2 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 | 2935-01-203-1864 |
| Primary Part Number | 11578-008 |
| Item Name | Valve,pressure Relief |
| FSC / FSG | 2935 / 29 — Engine System Cooling Components, Aircraft Prime Moving |
| Manufacturer | Ametek Thermal Systems Inc |
| Status | ACTIVE |
| FSC Application Data | ENGINE COOLING SYSTEM COMPONENTS,AIRCRAFT |
| General Characteristics Item Description | C/O CAP 11578-008-1,VALVE,PLUG STEM 11578-008-2,SPRING 11578-008-3; MATL CRES; 2.000 IN. LG; 1.840 IN. OD 1.687 BY 1.687 IN. HEX 2 HOLES 0.059 IN. DIA; 1.000 IN. DIA; 0.750 IN. SEAT DIA IN |
| 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 |
|---|---|
| 11578-008 PRIMARY | Ametek Thermal Systems Inc (USA) |
NSN 2935-01-203-1864 is a Valve,pressure Relief, manufactured by Ametek Thermal Systems Inc, classified under FSC 2935, Engine System Cooling Components, Aircraft Prime Moving. Status: active.
NSN 2935-01-203-1864 has 1 manufacturer part number on file: 11578-008 (Ametek Thermal Systems Inc).
Key specifications for 11578-008: FSC Application Data: ENGINE COOLING SYSTEM COMPONENTS,AIRCRAFT; General Characteristics Item Description: C/O CAP 11578-008-1,VALVE,PLUG STEM 11578-008-2,SPRING 11578-008-3; MATL CRES; 2.000 IN. LG; 1.840 IN. OD 1.687 BY 1.687 IN. HEX 2 HOLES 0.059 IN. DIA; 1.000 IN. DIA; 0.750 IN. SEAT DIA IN; End Item Identification: U/O ENG COOLING SYSTEM FOR FUEL FOR F110 ENG; E/I F16 C-D ACFT. 2 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.