Cock, Drain4820-01-591-4020

NSN 4820-01-591-4020 · NIIN 015914020 · Part number 63500250

Engine Power, Inc. Dba Engine Power Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 5X475

Government record, cited

NSN 4820-01-591-4020 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-591-4020. Manufacturer of record part number: 63500250.

Also searched as 4820-01-591-4020 · 4820015914020 · NIIN 015914020 · 01-591-4020 · FSC 4820 Valves, Nonpowered · CAGE 5X475 · 63500250

Nearby stock numbers ← 4820-01-591-3526 Disk, Valve · 4820-01-591-4099 Valve, Ball →

4820-01-591-4020 — Valves, Nonpowered

Features

Cock,drain — FSC 4820
Style Designator: STRAIGHT THRU
1 manufacturer part number on file
Manufacturer of record: Engine Power, Inc. Dba Engine Power Inc

Identification

NSN: 4820-01-591-4020
NIIN: 015914020
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 63500250
Manufacturer: Engine Power, Inc. Dba Engine Power Inc

General Description

The Cock,drain, cataloged under National Stock Number 4820-01-591-4020, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Engine Power, Inc. Dba Engine Power Inc. Government technical data includes 1 specification, 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	4820-01-591-4020
Primary Part Number	63500250
Item Name	Cock,drain
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Engine Power, Inc. Dba Engine Power Inc
Status	ACTIVE
Style Designator	STRAIGHT THRU

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
63500250 PRIMARY	Engine Power, Inc. Dba Engine Power Inc (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 4820-01-591-4020?

NSN 4820-01-591-4020 is a Cock,drain, manufactured by Engine Power, Inc. Dba Engine Power Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-591-4020?

NSN 4820-01-591-4020 has 1 manufacturer part number on file: 63500250 (Engine Power, Inc. Dba Engine Power Inc).

What are the specifications of 63500250?

Key specifications for 63500250: Style Designator: STRAIGHT THRU; Special Features: LENGTH: 1.48 IN; WIDTH: 0.43 IN; 1/4 NPT IN; End Item Identification: 3825-01-577-2713. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-591-4020 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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