Premium Information is available for this item - Upgrade for $1 a day


Boss Reducer

4730006405042 006405042 ER919D12-8 MS21916D12-8 AS21916

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). View more Boss Reducer

4730-00-640-5042 REDUCER,BOSS 4730006405042 006405042

Managed by United States
NSN Created on 1 Jan 1961
Data Last Changed
January 2023
NATO Update Count
NATO Data Quality
4730-00-640-5042 REDUCER,BOSS 4730006405042 006405042 1/1
NSN 4730-00-640-5042 (Generic Image) 1/1

4730-00-640-5042 Stock and Availability Marketplace 4730-00-640-5042

Need Help?
Request a Quotation from participating marketplace vendors
eBay Updated Every Day
4730-00-640-5042 RQST NE eBay
eBay Updated Every Day
4730-00-640-5042 RQST eBay
Amazon Updated Every Day
4730-00-640-5042 RQST NE Amazon

4730-00-640-5042 Related Documents Related Documents 4730-00-640-5042 5+ Documents (More...)

5365-66-158-1657 Boss Reducer 5365661581657 661581657 / /fsg-47/fsc-4730/us 4730-00-640-5042
Boss Reducer 4730006405042 006405042 4730-27-024-1901 Boss Reducer 4730270241901270241901 990524884
Reducer 4730270241901270241901 618-6196 Boss Reducer 4730226186196 226186196 4730-22-618- 6196 4730-00-640-5042
4730123021592 123021592 332078580 4730217088569 217088569 744-0016 4730-27-024-1901 4730-22-618-6196 4730-00-640-5042
4730-12-365-8091 302-1592 4730217087497 217087497 744-0016 4730-27-024-1901 4730-22-618-6196 4730-00-640-5042
217084999 744-0016 4730-27-024-1901 4730-22-618-6196 https// /fsg-47/fsc-4730/us 4730-00-640-5042
5365-66-156-4133 Plate Spacer 5365-66-158-1657 https// /fsg-47/fsc-4730/us 4730-00-640-5042
Boss Reducer 4730006405042 006405042 4730-27-024-1901 4730-22-618-6196 4730-00-640-5042 https//
155-0217 4730-01-514-6496 4730-12-373-5663 4730-99-744-0016 4730-27-024-1901 4730-22-618-6196 4730-00-640-5042 /fsg-47/fsc-4730/uk 4730-99-744-0016 Boss Reducer 4730997440016 997440016,D1997 4730006405042
006405042 -98-856-0814 Boss Reducer 5365988560814 988560814 155-0217 4730-01-514-6496 4730-12-373-5663
4730-01-155-0217 4730-01-514-6496 4730-12-373-5663 https// /fsg-47/fsc-4730/us 4730-00-640-5042
4730-12-365-8091 302-1592 4730217087497 217087497 744-0016 4730-27-024-1901 4730-22-618-6196 4730-00-640-5042
4730-12-365-8091 302-1592 4730217084999 217084999 744-0016 4730-27-024-1901 4730-22-618-6196 4730-00-640-5042
4730-12-365-8091 Reducer 4730217087497 217087497 744-0016 4730-27-024-1901 4730-22-618-6196 4730-00-640-5042

4730-00-640-5042 Demil Restrictions 4730-00-640-5042


4730-00-640-5042 is a Boss Reducer that does not have a nuclear hardened feature, but does have another critical feature or features such as tolerance, fit restriction or application. Demilitarization of this item has been confirmed and is not currently subject to changes. This item is considered a low risk when released from the control of the Department of Defense. The item may still be subject to the requirements of the Export Administration Regulations (EAR) and the Code of Federal Regulations (CFR). This item is not suspected to be hazardous. The precious metals content of this item is unknown.

4730-00-640-5042 HTS and ScheduleB Import and Export 4730-00-640-5042

4730-00-640-5042 End Users End Users 4730-00-640-5042

Brazil (YA01)
Effective Date:
1 Sep 2000
Spain (YB01)
Effective Date:
1 Apr 1991
Singapore (YJ01)
Effective Date:
1 Apr 1991
Malaysia (YW01)
Effective Date:
1 Aug 1997
Australia (ZA01)
Effective Date:
1 Apr 1991
Belgium (ZB01)
Effective Date:
1 Dec 1999
Canada (ZC01)
Effective Date:
1 Apr 1991
New Zealand (ZE01)
Effective Date:
1 Apr 1991
France (ZF01)
Effective Date:
1 Apr 1991
Germany (ZG01)
Effective Date:
1 Apr 1991
Republic of Korea (ZH01)
Effective Date:
1 Apr 1991
United Kingdom (ZK01)
Effective Date:
1 Apr 1991
Italy (ZR01)
Effective Date:
1 Apr 1991
Denmark (ZS01)
Effective Date:
1 Apr 1991
Norway (ZT01)
Effective Date:
1 Apr 1991
Greece (ZU01)
Effective Date:
1 Apr 1991
Turkey (ZW01)
Effective Date:
1 Nov 2005

4730-00-640-5042 Manufacturers Approved Sources 4730-00-640-5042

4730-00-640-5042 Technical Data Datasheet 4730-00-640-5042

Material [MATT]
Aluminum Alloy 2024 Overall
Material Document And Classification [MDCL]
Qq-A-225/6,T6 Fed Spec Single Material Response Overall
Surface Treatment [SFTT]
Anodize Overall
Connection Type [AWLS]
Threaded External Boss All Ends
Connection Style [AHNC]
External Seat For Gasket Seal (Boss) All Ends
Thread Series Designator [THSD]
Unj 1St End
Thread Series Designator [THSD]
Unjf 2Nd End
Nominal Thread Size [CQJX]
1.062 Inches 1St End
Nominal Thread Size [CQJX]
0.750 Inches 2Nd End
Thread Quantity Per Inch [CMLP]
12 1St End
Thread Class [AAJD]
3A All Ends
Nominal Overall Length [CWFR]
1.625 Inches
Reducer Type [ACSP]
Special Features [FEAT]
Weapon System Essential
Specification/Standard Data [ZZZK]
96906-Ms21916 Government Standard
Criticality Code Justification [CRTL]
End Item Identification [AGAV]
Used On Boeing Vertol Cargo Transport Helicopter, Model Ch-47 (Chinook)

4730-00-640-5042 Stock, Inventory and Procurement DLA Procurement Analysis 4730-00-640-5042

DLA Administrative Lead Time:
DLA Production Lead Time:
Subscribe to View DLA Inventory and Forecast...

4730-00-640-5042 Management Data Management Data 4730-00-640-5042

Effective Date
Unit of Issue
Unit Price
Qty Unit Pack
Jul 2005
Defense Logistics Agency (DS)
Order of Use
Jump To Code
Qty Per Assy
Technical Document
Quantative Expression
Defense Logistics Agency (DS)
Discontinued-Use 4730-00-722-2600

4730-00-640-5042 Related Items NATO Stock Numbers Related to 4730-00-640-5042

4730-00-640-5042 Freight Data Freight Information 4730-00-640-5042

4730-00-640-5042 has freight characteristics.It has a National Motor Freight Classification (NMFC) of 051400. A Sub NMFC of X. It has a NMFC Description of PIPE FITTINGS ALUMINUM. 4730-00-640-5042 is rated as class 77.5 when transported by Less-Than Truckload (LTL) freight. It has a Uniform Freight Classification (UFC) number of 29700 which rates the freight between FCL and LCL. 4730-00-640-5042 has a variance between NMFC and UFC when transported by rail and the description should be consulted. It has a Water Commodity Code (WCC) of 576 for ocean manifesting and military sealift. 4730-00-640-5042 is not classified as a special type of cargo when transported by water. 4730-00-640-5042 is not a consolidation and does not exceed 84" in any dimension. It should be compatible with a standard 72" Aircraft Cargo Door when transported by air.

4730-00-640-5042 Packaging Data Packaging Data 4730-00-640-5042

Responsible Activity
Packaging Data Source
Primary Inventory Control Activity (PICA)

Item Pack Level (Unpackaged)

Item Size
Item Weight
Weight/Dimensions Category
Item Preservation
Bare Metal Item
Over 10lb
Less than 85G
Special Requirement

Unit Pack Level (Packaged)

Quantity per Pack
Unit Size
Unit Weight
Unit Cube
Preservation Method
Any Suitable Process
Preservation Material
Wrapping Material
Cushioning Thickness
Special Marking
PPP-B-566, PPP-B-676, or ASTM-D5118, Folding, Setup or Fiberboard Box
No special marking

Intermediate Pack Level

Quantity of Unit Packs
ASTM-D5118, Type CF, Class Domestic, Corrugated Fiberboard Box

4730-00-640-5042 Contracting Technical Data File (CTDF) Contracting Technical Data File (CTDF) 4730-00-640-5042 October 2021

Criticality and Quality

Critical Item Code:
Flight Safety:
Life Support:
Certified Samples:
First Article Test (FAT):
Certificate of Quality Compliance:
Production Lot Testing:
Special Testing:
Qualified Products List (QPL):

Commercial Properties

Government Furnished Material:
Government Furnished Tooling:
Government Furnished Property:
Price Evaluation Code:
Diminshing Manufacturing Sources:
Commerical Off The Shelf (COTS):
End Item Application:
Auctioning Candidate:
Source of Procurement:
Contract Option:


Boeing Rights Guard:
Export Controlled:
Controlled Technical Data Package (TDP):
Restricted Technical Data Package (TDP):
Contains Classified Material
Weapons System Indicator Code (WSIC):

Packaging Requirements

Packaging Determination Table:
Packaging Review Code:
Special Packaging Instruction Number (SPIN):
Special Packaging Instruction Number Revision:
Special Packaging Instruction Number Date:
Pallet Reference Number Required: