PartsTable TECHNICAL DATA SHEET

NSN 4820-01-061-0301Government record, cited

Seat, Valve4820-01-061-0301

NSN 4820-01-061-0301 · NIIN 010610301 · Part number 27021-1030

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 4820-01-061-0301 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-061-0301. Manufacturer of record part number: 27021-1030.

Also searched as 4820-01-061-0301 · 4820010610301 · NIIN 010610301 · 01-061-0301 · FSC 4820 Valves, Nonpowered · CAGE 78062 · 27021-1030 · 27021-001 · 27021-001 FIND 10

Nearby stock numbers ← 4820-01-061-0238 Valve, Ball · 4820-01-061-0401 Parts Kit, Cartridge Valve →

4820-01-061-0301 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Style Designator: PLAIN FLANGED
Material Document and Classification: MIL-B-24480 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Material: COPPER ALLOY OVERALL
1 manufacturer part number on file
Manufacturer of record: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

Identification

NSN: 4820-01-061-0301
NIIN: 010610301
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 27021-1030
Manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-061-0301, 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 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-061-0301
Primary Part Number	27021-1030
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
Style Designator	PLAIN FLANGED
Material Document and Classification	MIL-B-24480 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Material	COPPER ALLOY OVERALL

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

⇄ Related Items 10

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4820-01-061-048027021-1130 POSSIBLE MATCH

DIAPHRAGM,ACTUATOR VALVE,SPECIAL

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

4820-01-087-510327021-1020 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

4820-01-096-927627021-1010 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

3020-01-113-276527021-1200 POSSIBLE MATCH

GEAR,WORM

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

4820-01-115-835027021-1140 POSSIBLE MATCH

PISTON,VALVE

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

4820-01-117-7264 POSSIBLE MATCH

CONNECTOR,VALVE

Possible match (shared part number)

4730-01-136-078727021-1040 POSSIBLE MATCH

ORIFICE,CONTROL

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

5330-01-151-803827021-1390 POSSIBLE MATCH

SEAL,GLAND,VALVE

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

4820-01-153-158027021-440 POSSIBLE MATCH

SLEEVE,DIRECTIONAL CONTROL LINEA

Possible match (shared part number)Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

5905-01-381-928427021-001 POSSIBLE MATCH

RESISTOR ASSEMBLY

Possible match (shared part number)Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company

Cross-Reference Index

Part Number	Manufacturer
27021-1030 PRIMARY	Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)

Reference documents

Reference	Meaning
27021-001	D/9 Drawing number reference only Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
27021-001 FIND 10	5/9 Secondary reference Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

Related Parts

4820-01-061-0480POSSIBLE MATCH

DIAPHRAGM,ACTUATOR VALVE,SPECIAL

27021-1130

4820-01-087-5103POSSIBLE MATCH

STEM,FLUID VALVE

27021-1020

4820-01-096-9276POSSIBLE MATCH

DISK,VALVE

27021-1010

3020-01-113-2765POSSIBLE MATCH

GEAR,WORM

27021-1200

4820-01-115-8350POSSIBLE MATCH

PISTON,VALVE

27021-1140

4820-01-117-7264POSSIBLE MATCH

CONNECTOR,VALVE

4730-01-136-0787POSSIBLE MATCH

ORIFICE,CONTROL

27021-1040

5330-01-151-8038POSSIBLE MATCH

SEAL,GLAND,VALVE

27021-1390

4820-01-153-1580POSSIBLE MATCH

SLEEVE,DIRECTIONAL CONTROL LINEA

27021-440

5905-01-381-9284POSSIBLE MATCH

RESISTOR ASSEMBLY

27021-001

Frequently Asked Questions

What is NSN 4820-01-061-0301?

NSN 4820-01-061-0301 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 4820-01-061-0301?

NSN 4820-01-061-0301 has 1 manufacturer part number on file: 27021-1030 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4820-01-061-0301?

10 possible matches (shared part number, not a government interchangeability claim): 4820-01-061-0480, 4820-01-087-5103, 4820-01-096-9276. Verify interchangeability with system specifications before substitution.

What are the specifications of 27021-1030?

Key specifications for 27021-1030: Style Designator: PLAIN FLANGED; Material Document and Classification: MIL-B-24480 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: COPPER ALLOY OVERALL. 3 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-061-0301 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