Poppet Drain Cock

MIL-V-25023

(NSN) National Stock Number

4820-00-203-6321

Federal Supply Classification

4820 Nonpowered Valves

Item Name Code

16989

Schedule B Code

8481909090

Summary

3a 1st end thread class, right-hand 1st end thread direction, poppet flow control device, plain (tube) 1st end connection style, automatic valve operation method, threaded external tube 1st end connection type

DAC	HCC	DMIL	RNCC
E	-	-	4

RNVC	SADC	MSDS	RNAAC
1	-	-	ZZ

Identification

An item designed to drain fluids from fuel systems, tanks, filters, or similar items. It has a mounting end, a free flowing end, and a quick-acting nonmetallic sealed closure, usually spring loaded, that holds it in an "off" position. It requires no lubrication other than from the fluid being drained.

INC	FIIG	Concept	Condition
16989	A530C0	-	1

Specifications

Thread Class

3a 1st end

Details

A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

Thread Direction

right-hand 1st end

Details

The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

Flow Control Device

poppet

Details

The part that controls the flow through the item.

Connection Style

plain (tube) 1st end

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.

Valve Operation Method

automatic

Details

The means used to control the operation of the valve.

Connection Type

threaded external tube 1st end

Details

Indicates the type of connection/s/.

Thread Quantity Per Inch

18 1st end

Details

The number of threads on the item per linear inch measured on a line parallel to the thread axis.

Nominal Thread Size

0.562 inches 1st end

Details

A designation that is used for the purpose of general identification of the thread.

Style Designator

straight thru

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

Supplementary Features

appl to acft,type f-5,hh-52,h-34

Details

Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.

Thread Series Designator

unf 1st end

Details

A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
CCA-4350	47038	E	-	5	1	-	ZZ
83501-2	92003	5	-	5	9	-	KE
S1630-63045	78286	5	-	5	9	-	MF
49F9798-53	80049	5	-	D	9	-	MF
159647	62983	5	-	5	9	-	MF
49F9798-53	01317	5	-	5	9	-	KE
575B-6AS	91511	5	-	5	9	-	ZZ
71D-6	91511	E	-	5	1	-	ZZ
BJ1000AS2	91511	5	-	5	9	-	MF
2D100A	82829	5	-	5	9	-	MF
2D100B	82829	E	-	5	1	-	ZZ
MS29528-6	96906	E	-	2	2	-	MF
49F9798-53	88042	5	-	5	9	-	MF

Material and Special Handling

Hazardous material, precious metals, criticality, and electrostatic discharge indicators.

HMIC	PMIC	ESD/EMI	Criticality
N	A	-	-

Freight

Universal / National Freight and Handling Information

UFC	HMC	LTL	LCL
29300	-	W	S

RVC	WCC	TCC	SHC
-	594	Z	Z

Certified Supplier

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Manufacturer

MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

CAGE: 81349

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FAQs

Frequently asked questions for NSN 4820-00-203-6321

What is the NIIN of the NSN 4820-00-203-6321?

The National Item Identification Number (NIIN) of the NSN 4820-00-203-6321 is 00-203-6321

When the NSN 4820-00-203-6321 was assigned to the Federal Catalog?

It was assigned 61 years ago, on Tue, Jan 1, 1963

Does the NSN 4820-00-203-6321 contain any precious metals?

Does not contain precious metal

Does the NSN 4820-00-203-6321 contain any hazardous material?

No data in HMIRS

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