Tube to Boss Straight Adapter

4924-6
(NSN) National Stock Number
4730-00-278-8344
Federal Supply Classification
4730 Hose, Pipe, Tube, Lubrication and Railing Fittings
Item Name Code
22675
Schedule B Code
7307994000
Summary

3a center bulkhead thread class, 3a all ends thread class, flared (tube) 1st end connection style, flared w/ gasket seal (boss) 2nd end connection style, threaded external boss 2nd end connection type, threaded external tube 1st end connection type

DAC HCC DMIL RNCC
6 - - 5
RNVC SADC MSDS RNAAC
1 - - AX
Identification

An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.

INC FIIG Concept Condition
22675 A080B0 1 1
Specifications
Thread Class
3a center bulkhead
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Thread Class
3a all ends
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Connection Style
flared (tube) 1st end
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.
Connection Style
flared w/ gasket seal (boss) 2nd 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 external tube 1st end
Details Indicates the type of connection/s/.
Nominal Thread Size
0.562 inches center bulkhead
Details A designation that is used for the purpose of general identification of the thread.
Nominal Thread Size
0.562 inches all ends
Details A designation that is used for the purpose of general identification of the thread.
Seat Angle
37.0 degrees 1st end
Details The angle of the end surface upon which the mated surface seats.
Nominal Outside Diameter Tube Accommodated
0.375 inches 1st end
Details The nominal length of a straight line which passes through the center of the accommodated tube,and terminates at the outside circumference.
Nominal Overall Length
2.219 inches
Details The nominal dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
Part Name Assigned By Controlling Agency
union-flared tube,3/8 bulkhead and universal
Details The name assigned to the item by the government agency or commercial organization controlling the design of the item.
Material
steel comp 1137 overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
66 fed std 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.
Surface Treatment
cadmium 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
qq-p-416,type 1,class 2 fed 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.
Thread Series Designator
unjf center bulkhead
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
81343-as4841 professional/industrial association 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
AN832-6 R1120 6 - 5 9 - ZG
AN832-6 22995 6 - 5 9 - AX
AN832-6 13899 E - 5 9 - AX
AN832-6 30974 E - 5 9 - AX
AN832-6 14798 E - 5 9 - AX
AN832-6 14397 E - 5 9 - AX
AN832-6 06581 E - 5 9 - AX
AN832-6 71563 E - 5 9 - AX
MIL-F-5509 81348 E - 5 9 - ZZ
AN832-6 00624 E - 5 9 - AX
AN832-6 03958 6 - 5 9 - AX
6WTSX 45681 6 - 5 9 - AX
6WTSX 30780 6 - 5 1 - AX
AS4841 0U583 E - 5 9 - ZZ
AS5406-6 0U583 E - 3 2 - ZZ
SAE-AS4841 0U583 E - 3 1 - ZZ
AS4841 81343 E - 5 9 - ZZ
AS5406-6 81343 E - 5 9 - ZZ
6WTSX 98441 6 - 5 9 - AX
AN793-6 88044 6 - 5 9 - SB
AN828-6 88044 6 - 5 9 - SB
AN832-6 88044 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
30000 - W -
RVC WCC TCC SHC
- 576 Z 9
Price and Availability Quote

Send us a quick request for quote using the form below:

Provided with every order

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

  • Counterfeit Parts Prevention
  • 100% Product Inspections
  • 7 Year Record Retention
  • On Time Delivery
  • HAZMAT Certified
  • Worldwide Shipping
FAQs
Frequently asked questions for NSN 4730-00-278-8344
What is the NIIN of the NSN 4730-00-278-8344?
The National Item Identification Number (NIIN) of the NSN 4730-00-278-8344 is 00-278-8344
When the NSN 4730-00-278-8344 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Sun, Jan 1, 1961
Does the NSN 4730-00-278-8344 contain any precious metals?
Type/content is unknown
Does the NSN 4730-00-278-8344 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.

Similar Products
Who we are?

At our core, we specialize in sourcing and supplying high-quality NSN (National Stock Number) parts to industries that demand precision and reliability.

From aerospace and defense to manufacturing and logistics, we provide the essential components that keep critical systems running.

Contact
350 Tenth Ave
San Diego, CA, 92101
United States
© 2025 National Stock Number (NSN) Parts Store, Inc. All rights reserved.
Made in USA