Disk, Valve4820-01-558-0955

NSN 4820-01-558-0955 · NIIN 015580955 · Part number 525-S4XX-03XFK

Sfc Valve Corporation · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 1GZ83

Government record, cited

NSN 4820-01-558-0955 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-558-0955. Manufacturer of record part number: 525-S4XX-03XFK.

Also searched as 4820-01-558-0955 · 4820015580955 · NIIN 015580955 · 01-558-0955 · FSC 4820 Valves, Nonpowered · CAGE 1GZ83 · 525-S4XX-03XFK · 525-SX11-XM-B ITEM 3 .75IN

Nearby stock numbers ← 4820-01-558-0907 Valve, Check · 4820-01-558-1167 Valve, Globe →

4820-01-558-0955 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Material Document and Classification: MIL-C-24252 CONDITION CA-7 MIL STD ALL MATERIAL RESPONSES
Material: COBALT ALLOY AND NICKEL ALLOY AND TITANIUM ALLOY
2 manufacturer part numbers on file
Manufacturer of record: Sfc Valve Corporation

Identification

NSN: 4820-01-558-0955
NIIN: 015580955
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 525-S4XX-03XFK
Manufacturer: Sfc Valve Corporation

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-558-0955, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sfc Valve Corporation. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-558-0955
Primary Part Number	525-S4XX-03XFK
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Sfc Valve Corporation
Status	ACTIVE
Material Document and Classification	MIL-C-24252 CONDITION CA-7 MIL STD ALL MATERIAL RESPONSES
Material	COBALT ALLOY AND NICKEL ALLOY AND TITANIUM ALLOY

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
525-S4XX-03XFK PRIMARY	Sfc Valve Corporation (USA)
525-SX11-XM-B ITEM 3 .75IN	Sfc Valve Corporation (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 4820-01-558-0955?

NSN 4820-01-558-0955 is a Disk,valve, manufactured by Sfc Valve Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-558-0955?

NSN 4820-01-558-0955 has 2 manufacturer part numbers on file: 525-S4XX-03XFK (Sfc Valve Corporation), 525-SX11-XM-B ITEM 3 .75IN (Sfc Valve Corporation).

What are the specifications of 525-S4XX-03XFK?

Key specifications for 525-S4XX-03XFK: Material Document and Classification: MIL-C-24252 CONDITION CA-7 MIL STD ALL MATERIAL RESPONSES; End Item Identification: VALVE, STOP .75IN 525-S411-XM-B IN; Material: COBALT ALLOY AND NICKEL ALLOY AND TITANIUM ALLOY. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-558-0955 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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