Seat, Valve4820-01-061-0143

NSN 4820-01-061-0143 · NIIN 010610143 · Part number 20417-1020

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 78062

Government record, cited

NSN 4820-01-061-0143 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-061-0143. Manufacturer of record part number: 20417-1020.

Also searched as 4820-01-061-0143 · 4820010610143 · NIIN 010610143 · 01-061-0143 · FSC 4820 Valves, Nonpowered · CAGE 78062 · 20417-1020

Nearby stock numbers ← 4820-01-061-0121 · 4820-01-061-0144 Seat, Valve →

4820-01-061-0143 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 0.148 INCHES NOMINAL IN
Flange Diameter: 1.550 INCHES NOMINAL IN
Body Outside Diameter: 1.550 INCHES NOMINAL IN
Style Designator: PLAIN FLANGED
Body Inside Diameter: 0.625 INCHES NOMINAL IN
Under Flange Height: 0.337 INCHES NOMINAL IN
Material: STEEL CORROSION RESISTING OVERALL

Identification

NSN: 4820-01-061-0143
NIIN: 010610143
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 20417-1020
Manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-061-0143, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 8 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.

Technical Specifications

Parameter	Value
NSN	4820-01-061-0143
Primary Part Number	20417-1020
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Status	ACTIVE
Flange Seat to Disk End Height	0.148 INCHES NOMINAL IN
Flange Diameter	1.550 INCHES NOMINAL IN
Body Outside Diameter	1.550 INCHES NOMINAL IN
Style Designator	PLAIN FLANGED
Body Inside Diameter	0.625 INCHES NOMINAL IN
Under Flange Height	0.337 INCHES NOMINAL IN
Material	STEEL CORROSION RESISTING OVERALL
Seating Surface Shape	FLAT

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
20417-1020 PRIMARY	Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)

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 4820-01-061-0143?

NSN 4820-01-061-0143 is a Seat,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-061-0143?

NSN 4820-01-061-0143 has 1 manufacturer part number on file: 20417-1020 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What are the specifications of 20417-1020?

Key specifications for 20417-1020: Flange Seat to Disk End Height: 0.148 INCHES NOMINAL IN; Flange Diameter: 1.550 INCHES NOMINAL IN; Body Outside Diameter: 1.550 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-061-0143 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.

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