Disk, Valve4820-01-004-0016

NSN 4820-01-004-0016 · NIIN 010040016 · Part number 211996

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 61208

Government record, cited

NSN 4820-01-004-0016 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-004-0016. Manufacturer of record part number: 211996.

Also searched as 4820-01-004-0016 · 4820010040016 · NIIN 010040016 · 01-004-0016 · FSC 4820 Valves, Nonpowered · CAGE 61208 · 211996

Nearby stock numbers ← 4820-01-004-0014 Disk, Valve · 4820-01-004-0748 Valve, Check →

4820-01-004-0016 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Shank Diameter: 0.623 INCHES NOMINAL IN
Flange Diameter: 0.500 INCHES NOMINAL IN
Style Designator: POPPET
Seat Angle: 30.0 DEGREES NOMINAL
Material: PLASTIC
1 manufacturer part number on file
Manufacturer of record: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic

Identification

NSN: 4820-01-004-0016
NIIN: 010040016
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 211996
Manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-004-0016, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 5 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	4820-01-004-0016
Primary Part Number	211996
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Status	ACTIVE
Shank Diameter	0.623 INCHES NOMINAL IN
Flange Diameter	0.500 INCHES NOMINAL IN
Style Designator	POPPET
Seat Angle	30.0 DEGREES NOMINAL
Material	PLASTIC

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
211996 PRIMARY	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (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 4820-01-004-0016?

NSN 4820-01-004-0016 is a Disk,valve, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-004-0016?

NSN 4820-01-004-0016 has 1 manufacturer part number on file: 211996 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What are the specifications of 211996?

Key specifications for 211996: Shank Diameter: 0.623 INCHES NOMINAL IN; Flange Diameter: 0.500 INCHES NOMINAL IN; Overall Height: 0.753 INCHES NOMINAL IN; Style Designator: POPPET. 5 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-004-0016 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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