Boss Reducer

MS21916D4-3

(NSN) National Stock Number

4730-00-289-2777

Federal Supply Classification

4730 Hose, Pipe, Tube, Lubrication and Railing Fittings

Item Name Code

23541

Schedule B Code

7609000000

Summary

3a all ends thread class, concentric reducer type, 225.0 deg fahrenheit 1st response maximum operating temp, -65.0 deg fahrenheit 2nd response maximum operating temp, external seat for gasket seal (boss) all ends connection style, threaded external boss all ends connection type

DAC	HCC	DMIL	RNCC
3	-	-	5

RNVC	SADC	MSDS	RNAAC
1	-	-	AX

Identification

A straight fitting having a boss connection of a different size at each end. Both connections have external or internal machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. Excludes:bushing (as modified).

INC	FIIG	Concept	Condition
23541	A080B0	-	1

Specifications

Thread Class

3a all ends

Details

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

Reducer Type

concentric

Details

Refers to the location of the ends whether on the same centerline (concentric) or on different centerlines (eccentric).

Maximum Operating Temp

225.0 deg fahrenheit 1st response

Details

The maximum temperature at which the item is rated to operate for an extended period of time.

Maximum Operating Temp

-65.0 deg fahrenheit 2nd response

Details

The maximum temperature at which the item is rated to operate for an extended period of time.

Connection Style

external seat for gasket seal (boss) all ends

Details

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

Connection Type

threaded external boss all ends

Details

Indicates the type of connection/s/.

Maximum Operating Pressure

3000.0 pounds per square inch single response

Details

The maximum pressure at which the item is rated for operation.

Nominal Thread Size

0.375 inches 2nd end

Details

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

Nominal Thread Size

0.438 inches 1st end

Details

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

Nominal Overall Length

1.141 inches

Details

The nominal dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.

Material

aluminum alloy 2014 overall or aluminum alloy 2024 overall

Details

The chemical compound or mechanical mixture properties of which the item is fabricated.

Material Document And Classification

mil-a-8625,ty 6,cl 2,gold mil spec single material response overall

Details

The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.

Media For Which Designed

hydraulic fluid 1st response

Details

The type of media for which the item is designed.

Media For Which Designed

oxygen, gaseous 2nd response

Details

The type of media for which the item is designed.

Surface Treatment

anodize overall

Details

The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.

Surface Treatment Document And Classification

mil-a-8625,ty 2,cl 2 mil spec single treatment response overall

Details

The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.

Thread Series Designator

unjf all ends

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.

Specification/Standard Data

96906-ms21916 government standard

Details

The document designator of the specification or standard which established the item of supply.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
3117151	001JK	4	-	5	2	-	9Z
3117151	S4956	4	-	5	9	-	ZF
MS21916D4-3	R1120	6	-	5	2	-	ZG
3117151	FB459	4	-	5	2	-	ZF
MS21916D4-3	14397	5	-	5	9	-	AX
MS21916D4-3	03647	3	-	5	9	-	AX
ER894D4-3	79470	5	-	5	9	-	SB
ER919D4-3	79470	3	-	5	9	-	AX
MS21916D4-3	79470	3	-	5	9	-	AX
MS21916D4-3	0U583	E	-	3	2	-	ZZ
SAE-AS18280	0U583	E	-	3	1	-	ZZ
215-26435-1	80378	E	-	C	1	-	AX
MS21916D4-3	96906	3	-	5	9	-	AX

Material and Special Handling

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

HMIC	PMIC	ESD/EMI	Criticality
N	U	-	-

Freight

Universal / National Freight and Handling Information

UFC	HMC	LTL	LCL
00000	-	W	-

RVC	WCC	TCC	SHC
-	576	Z	9

Certified Supplier

Order with confidence. We are a valued certified supplier serving customers in the military and aerospace industries.

Genuine Manufacturers Parts
100% Product Inspection
7 Year Sales Record Retention
Fast On-Time Delivery
HAZMAT Certified
Global Shipping

Manufacturer

EATON AEROQUIP LLC DBA AEROSPACE GROUP DIV FLUID AND ELECTRICAL DISTRIBUTION

CAGE: 00624

JACKSON , MI , 49203-1973

UNITED STATES

View Products

FAQs

Frequently asked questions for NSN 4730-00-289-2777

What is the NIIN of the NSN 4730-00-289-2777?

The National Item Identification Number (NIIN) of the NSN 4730-00-289-2777 is 00-289-2777

When the NSN 4730-00-289-2777 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Sun, Jan 1, 1961

Does the NSN 4730-00-289-2777 contain any precious metals?

Type/content is unknown

Does the NSN 4730-00-289-2777 contain any hazardous material?

No data in HMIRS

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.