The Seat,valve, cataloged under National Stock Number 4820-01-187-1258, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Corporation Dba Eaton Inoac Div Eaton. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-187-1258 |
| Primary Part Number | C-36107 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Corporation Dba Eaton Inoac Div Eaton |
| Status | ACTIVE |
| Thread Length | 0.594 INCHES NOMINAL SECOND THREADED PORTION IN |
| Thread Length | 0.688 INCHES NOMINAL FIRST THREADED PORTION IN |
| Style Designator | DOUBLE FLANGED |
| Material Document and Classification | MIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Body Inside Diameter | 1.125 INCHES NOMINAL IN |
| Nominal Thread Size | 2.125 INCHES FIRST THREADED PORTION IN |
| Nominal Thread Size | 2.500 INCHES SECOND THREADED PORTION IN |
| Thread Class | 2A SECOND THREADED PORTION A |
| Thread Class | 2A FIRST THREADED PORTION A |
| Thread Quantity Per Inch | 16 FIRST THREADED PORTION |
| Thread Quantity Per Inch | 12 SECOND THREADED PORTION |
| Material | NICKEL ALLOY BODY |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Series Designator | UN SECOND THREADED PORTION |
| Thread Series Designator | UN FIRST 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 |
|---|---|
| 36600 PC 5 | Eaton Corporation Dba Eaton Inoac Div Eaton (USA) |
| C-36107 PRIMARY | Eaton Corporation Dba Eaton Inoac Div Eaton (USA) |
| Reference | Meaning |
|---|---|
| 36600 | D/9 Drawing number reference only Eaton Corporation Dba Eaton Inoac Div Eaton |
| C364PC15 | C/1 Advisory reference — outside the item-of-supply concept Marine Electronics Inc |
NSN 4820-01-187-1258 is a Seat,valve, manufactured by Eaton Corporation Dba Eaton Inoac Div Eaton, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-187-1258 has 2 manufacturer part numbers on file: 36600 PC 5 (Eaton Corporation Dba Eaton Inoac Div Eaton), C-36107 (Eaton Corporation Dba Eaton Inoac Div Eaton).
Key specifications for C-36107: Overall Height: 2.515 INCHES NOMINAL IN; Thread Length: 0.594 INCHES NOMINAL SECOND THREADED PORTION IN; Thread Length: 0.688 INCHES NOMINAL FIRST THREADED PORTION IN; Style Designator: DOUBLE FLANGED. 18 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.