Retainer, Valve Spri4820-01-508-3523

NSN 4820-01-508-3523 · NIIN 015083523 · Part number 21157-1003-1

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 4820-01-508-3523 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-508-3523. Manufacturer of record part number: 21157-1003-1.

Also searched as 4820-01-508-3523 · 4820015083523 · NIIN 015083523 · 01-508-3523 · FSC 4820 Valves, Nonpowered · CAGE 78062 · 21157-1003-1 · 21157 FIND 4

Nearby stock numbers ← 4820-01-508-3518 Valve, Ball · 4820-01-508-3526 Stem, Fluid Valve →

4820-01-508-3523 — Valves, Nonpowered

Features

Retainer,valve Spri — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

Identification

NSN: 4820-01-508-3523
NIIN: 015083523
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 21157-1003-1
Manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace

General Description

The Retainer,valve Spri, cataloged under National Stock Number 4820-01-508-3523, 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. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Retainer,valve Spri
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (CAGE 78062)

Technical Specifications

Parameter	Value
NSN	4820-01-508-3523
Primary Part Number	21157-1003-1
Item Name	Retainer,valve Spri
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Status	ACTIVE

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
21157-1003-1 PRIMARY	Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21157 FIND 4	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 4820-01-508-3523?

NSN 4820-01-508-3523 is a Retainer,valve Spri, 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 4820-01-508-3523?

NSN 4820-01-508-3523 has 2 manufacturer part numbers on file: 21157-1003-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21157 FIND 4 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

Is NSN 4820-01-508-3523 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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