PartsTable TECHNICAL DATA SHEET

NSN 4820-01-377-6586Government record, cited

Seat, Valve4820-01-377-6586

NSN 4820-01-377-6586 · NIIN 013776586 · Part number 2515W559

Honeywell Aerospace Yeovil Div Aerospace -Yeovil · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE U1605

Government record, cited

NSN 4820-01-377-6586 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-377-6586. Manufacturer of record part number: 2515W559.

Also searched as 4820-01-377-6586 · 4820013776586 · NIIN 013776586 · 01-377-6586 · FSC 4820 Valves, Nonpowered · CAGE U1605 · 2515W559

Nearby stock numbers ← 4820-01-377-6493 Valve, Relief, Pressure and Temper · 4820-01-377-6630 Valve, Safety Relief →

4820-01-377-6586 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Honeywell Aerospace Yeovil Div Aerospace -Yeovil

Identification

NSN: 4820-01-377-6586
NIIN: 013776586
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2515W559
Manufacturer: Honeywell Aerospace Yeovil Div Aerospace -Yeovil

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-377-6586, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell Aerospace Yeovil Div Aerospace -Yeovil. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Seat,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Honeywell Aerospace Yeovil Div Aerospace -Yeovil (CAGE U1605)

Technical Specifications

Parameter	Value
NSN	4820-01-377-6586
Primary Part Number	2515W559
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Honeywell Aerospace Yeovil Div Aerospace -Yeovil
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
2515W559	Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR)

Reference documents

Reference	Meaning
2515W559	3/9 Design control — primary reference Smith E L and Sons Co

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-377-6586?

NSN 4820-01-377-6586 is a Seat,valve, manufactured by Honeywell Aerospace Yeovil Div Aerospace -Yeovil, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-377-6586?

NSN 4820-01-377-6586 has 1 manufacturer part number on file: 2515W559 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil).

Is NSN 4820-01-377-6586 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

PartsTable Design LLC · partstable.com