Boss Reducer

AN893-31D

(NSN) National Stock Number

4730-00-057-4554

Federal Supply Classification

4730 Hose, Pipe, Tube, Lubrication and Railing Fittings

Item Name Code

23541

Schedule B Code

7609000000

Summary

3a 2nd end thread class, 3b 1st end thread class, concentric reducer type, aircraft, stratofortress b-52 end item identification, external seat for gasket seal (boss) 2nd end connection style, gasket seal (boss) 1st end connection style

DAC	HCC	DMIL	RNCC
E	-	-	5

RNVC	SADC	MSDS	RNAAC
9	-	-	ZZ

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 2nd end

Details

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

Thread Class

3b 1st end

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).

End Item Identification

aircraft, stratofortress b-52

Details

The national stock number or the identification information of the end equipment for which the item is a part.

Connection Style

external seat for gasket seal (boss) 2nd end

Details

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

Connection Style

gasket seal (boss) 1st end

Details

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

Connection Type

threaded external boss 2nd end

Details

Indicates the type of connection/s/.

Connection Type

threaded internal boss 1st end

Details

Indicates the type of connection/s/.

Nominal Thread Size

0.438 inches 1st end

Details

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

Nominal Thread Size

0.875 inches 2nd end

Details

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

Criticality Code Justification

feat

Details

The master requirement codes of those requirements which are technically critical by reason of tolerance,fit,performance,or other characteristics which affect identification of the item.

Nominal Overall Length

0.844 inches

Details

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

Special Features

three 0.065 in.min,0.075 in.max dia holes drilled through hex corners,0.156 in. from first end;weapon system essential

Details

Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.

Material

aluminum alloy overall

Details

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

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 mil spec single treatment response inside

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.

Surface Treatment Document And Classification

mil-a-8625,type 2 mil spec single treatment response outside

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.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
MS24397D31	22995	E	-	5	9	-	AX
MS24397D31	13899	E	-	5	9	-	AX
MS24397D31	14798	E	-	5	9	-	AX
MS24397D31	14397	E	-	5	9	-	AX
MS24397D31	06581	E	-	5	9	-	AX
MS24397D31	71563	E	-	5	9	-	AX
MS24397D31	00624	E	-	5	9	-	AX
AS4875	0U583	E	-	5	9	-	ZZ
AS5172	0U583	E	-	5	9	-	ZZ
AS5172D0410L	0U583	E	-	3	2	-	ZZ
SAE-AS4875	0U583	E	-	3	1	-	ZZ
AS4875	81343	E	-	5	9	-	ZZ
AS5172	81343	E	-	5	9	-	ZZ
AS5172D04101	81343	E	-	5	9	-	ZZ
AS5172D0410L	81343	E	-	5	9	-	ZZ
MS24397D31	96906	E	-	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

AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE

CAGE: 88044

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FAQs

Frequently asked questions for NSN 4730-00-057-4554

What is the NIIN of the NSN 4730-00-057-4554?

The National Item Identification Number (NIIN) of the NSN 4730-00-057-4554 is 00-057-4554

When the NSN 4730-00-057-4554 was assigned to the Federal Catalog?

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

Does the NSN 4730-00-057-4554 contain any precious metals?

Type/content is unknown

Does the NSN 4730-00-057-4554 contain any hazardous material?

No data in HMIRS

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