Disk, Valve4820-01-556-0044

NSN 4820-01-556-0044 · NIIN 015560044

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-556-0044 · 4820015560044 · NIIN 015560044 · 01-556-0044 · FSC 4820 Valves, Nonpowered · 803-2177525 · 803-2177525-M4XX-80 · 803-2177525-S4XX-80

Nearby stock numbers ← 4820-01-556-0026 Retainer, Disk, Valve · 4820-01-556-0051 Stem and Disc Assem →

4820-01-556-0044 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Style Designator: PLUG
Material Document and Classification: MIL-C-24252 COND CA-7 MIL SPEC SINGLE MATERIAL RESPONSE
Seat Angle: 14.5 DEGREES NOMINAL
Nominal Thread Size: 1.062 INCHES IN
Thread Class: 2B
Thread Quantity Per Inch: 16
Material: STEEL UNS K03504

Identification

NSN: 4820-01-556-0044
NIIN: 015560044
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-556-0044, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-556-0044
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Style Designator	PLUG
Material Document and Classification	MIL-C-24252 COND CA-7 MIL SPEC SINGLE MATERIAL RESPONSE
Seat Angle	14.5 DEGREES NOMINAL
Nominal Thread Size	1.062 INCHES IN
Thread Class	2B
Thread Quantity Per Inch	16
Material	STEEL UNS K03504
Thread Series Designator	UN

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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
803-2177525	D/9 Drawing number reference only U.S. Government activity
803-2177525-M4XX-80	5/2 Secondary reference U.S. Government activity
803-2177525-S4XX-80	3/2 Design control — primary reference U.S. Government activity

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 4820-01-556-0044?

NSN 4820-01-556-0044 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-556-0044?

Key specifications for 4820-01-556-0044: Overall Height: 1.270 INCHES NOMINAL IN; Style Designator: PLUG; Material Document and Classification: MIL-C-24252 COND CA-7 MIL SPEC SINGLE MATERIAL RESPONSE; Seat Angle: 14.5 DEGREES NOMINAL. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-556-0044 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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