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  4. FSC 4730 - Hose, Pipe, Tube, Lubrication and Railing Fittings
  5. NSN 4730-00-278-8410

4730-00-278-8410

NIIN 00-278-8410 - Tube to Boss Tee

NSN 4730-00-278-8410 Classification

A fitting having three connections with the branch connection fixed at 90 degrees (1.5705 radians) to the run. The tube connection(s) has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube, or is unthreaded and designed to accommodate a tube. The boss connection(s) 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 may have side inlet(s). It is used as a junction at the intersection of a tube or fitting and a boss or boss fitting on items such as a tank, housing, valve fitting, or the like. See also tee, tube; and tee, pipe to tube. Excludes:connector, multiple, fluid pressure line.

4730-00-278-8410, tube to boss tee

National Stock Number
4730-00-278-8410
Federal Supply Group
47 - Pipe, Tubing, Hose, and Fittings
Federal Supply Classification
4730 - Hose, Pipe, Tube, Lubrication and Railing Fittings
National Item Identification Number
00-278-8410
Item Name Code
22683
Assigned Date
Sun, Jan 1, 1961
Schedule B Code
7609000000
Requires Demilitarization
DEMIL/MLI
Quality Commitment
Quality, Safety, and Compliance in Every Supply Requirement

Serving aerospace, military, MRO, and industrial customers with quality-first sourcing, inspected products, audited supply chain processes, and compliance-focused support.

AS9120 Certified
Audited Supply Chain
ITAR Registered
DDTC Registered
HAZMAT Certified
Customer Service Objectives
Every Product 100% Inspected

Every product is 100% inspected to support quality assurance, safety, documentation, and dependable delivery for critical aerospace, defense, MRO, and industrial sourcing requirements.

NSN 4730-00-278-8410 Material

Hazmat, Precious Metals, Criticality, Environment, and ESD

A
(PMIC) Precious Metals Indicator
Item does not contain precious metal.
What does the A code means?

Precious metals indicator code (pmic): this code is to identify items that have precious metals as part of their content. Precious metals are those metals generally considered to be uncommon and highly valuable which are relatively superior in certain properties such as resistance to corrosion and electrical conductivity. The precious metals recovery program for the federal government encompasses gold, silver, platinum, and the platinum family which consists of palladium, iridium, rhodium, osmium, and ruthenium. See volume 10, table 160 and quick info on-line.

N
(HMIC) Hazardous Metal Indicator
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
What does the N code means?

Hazardous materials indicator code: a code established in the dlis total item record (tir) to identify to users of the federal catalog system all known or suspected hazardous items as defined by safety/health, transaction and/or environmental regulations, to serve as a flag that a procuring activity must acquire a material safety data sheet when a hazardous item is procured, and to inform federal catalog system users when more detailed information on an item is available in the hazardous material information system. See volume 10, table 179 and quick info on-line.

X
Criticality Code
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
What does the X code means?

Criticality code, federal item identification guide: a code which indicates when an item is technically critical, by reason of tolerance, fit, application, nuclear hardness properties or other characteristic which affects identification of the item. See volume 10, table 181 and quick info on-line.

Cross Reference Parts

Part numbers that meet the specification outlined on this page and set by the OEM

Part Number CAGE RNCC RNVC DAC RNAAC MSDS SADC
3101221 001JK 5 9 5 9Z - -
3101221 FB459 5 2 4 ZF - -
3101221 S4956 5 9 F AX - -
4730PL0673333 9009H 6 9 9 WP - -
AN7833 88044 5 9 4 9Z - -
AN783D4 06581 5 9 E AX - -
AN783D4 13899 5 9 E AX - -
AN783D4 14397 5 9 6 AX - -
AN783D4 14798 5 9 E AX - -
AN783D4 17341 5 9 6 AX - -
AN783D4 22995 5 9 E AX - -
AN783D4 30974 5 9 E AX - -
AN783D4 71563 5 9 E AX - -
AN783D4 88044 5 9 E AX - -
AN783D4 88044 2 2 E AX
AS1031D040404 0U583 3 2 5 ZZ - -
AS1031D040404 81343 3 9 E ZZ - -
AS1031W040404 81343 5 9 E ZZ - -
Price Quote

Get an up to date pricing and availability quote for 4730-00-278-8410.

Stock Availability

This product is available in the following quantities and conditions:

(NS) New Surplus 99
(AR) As Removed 7
(NE) New Material 664
(SV) Serviceable 1
In Stock 771
Availability of this item was last updated 07/09/2026 06:07 PM EDT.
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