Seat, Valve4820-01-342-3445

NSN 4820-01-342-3445 · NIIN 013423445 · Part number 4775-1,DC

Hydrasearch Company, Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 32142

Government record, cited

NSN 4820-01-342-3445 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-342-3445. Manufacturer of record part number: 4775-1,DC.

Also searched as 4820-01-342-3445 · 4820013423445 · NIIN 013423445 · 01-342-3445 · FSC 4820 Valves, Nonpowered · CAGE 32142 · 4775-1,DC

Nearby stock numbers ← 4820-01-342-3278 Valve, Regulating, Fluid Pressure · 4820-01-342-3470 Valve, Gate →

4820-01-342-3445 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Material Document and Classification: QQ-N-281-CL-B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Material: NICKEL ALLOY OVERALL
1 manufacturer part number on file
Manufacturer of record: Hydrasearch Company, Llc

Identification

NSN: 4820-01-342-3445
NIIN: 013423445
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 4775-1,DC
Manufacturer: Hydrasearch Company, Llc

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-342-3445, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydrasearch Company, Llc. Government technical data includes 2 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	4820-01-342-3445
Primary Part Number	4775-1,DC
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Hydrasearch Company, Llc
Status	ACTIVE
Material Document and Classification	QQ-N-281-CL-B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Material	NICKEL 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

Cross-Reference Index

Part Number	Manufacturer
4775-1,DC PRIMARY	Hydrasearch Company, Llc (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 4820-01-342-3445?

NSN 4820-01-342-3445 is a Seat,valve, manufactured by Hydrasearch Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-342-3445?

NSN 4820-01-342-3445 has 1 manufacturer part number on file: 4775-1,DC (Hydrasearch Company, Llc).

What are the specifications of 4775-1,DC?

Key specifications for 4775-1,DC: Material Document and Classification: QQ-N-281-CL-B FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: NICKEL ALLOY OVERALL. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-342-3445 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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