The Seat,valve, cataloged under National Stock Number 4820-01-156-4860, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tate Andale, Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-156-4860 |
| Primary Part Number | N5766 PIECE 3 AND 5 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tate Andale, Llc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.470 INCHES NOMINAL IN |
| Flange Diameter | 2.743 INCHES NOMINAL IN |
| Thread Length | 0.405 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 1.500 INCHES NOMINAL IN |
| Nominal Thread Size | 2.000 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.430 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 12 SINGLE THREADED PORTION |
| Material | COPPER ALLOY OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| N5766 PIECE 3 AND 5 PRIMARY | Tate Andale, Llc (USA) |
| Reference | Meaning |
|---|---|
| N5766 | D/9 Drawing number reference only Tate Andale, Llc |
NSN 4820-01-156-4860 is a Seat,valve, manufactured by Tate Andale, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-156-4860 has 1 manufacturer part number on file: N5766 PIECE 3 AND 5 (Tate Andale, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-156-4861. Verify interchangeability with system specifications before substitution.
Key specifications for N5766 PIECE 3 AND 5: Flange Seat to Disk End Height: 0.470 INCHES NOMINAL IN; Flange Diameter: 2.743 INCHES NOMINAL IN; Thread Length: 0.405 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 13 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.
NSN 4820-01-156-4860 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.