Tube Coupling Nut

NSN: 4730-00-277-6451 | Model: AN818-3

An internally threaded nut which has either an internal seat or shoulder and/or is designed to be used with a ferrule, to mate with the seat of an externally threaded tube fitting to form a leakproof connection. Excludes nut (1), tube coupling, reducing; and nut (1), union.

NSN Properties and Flags

NATO Stock Number

4730-00-277-6451

DEMIL

Thread Class

Thread Direction

Right-hand

Fabrication Method

Any acceptable

Nut Style

Tube coupling

Nut Height

0.594 inches

End Application

Grumman a10 aircraft bell observation helicopter oh-5ba

Width Across Flats

0.438 inches

Length To Shoulder

0.500 inches

Smallest Inside Diameter

0.242 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

0.375 inches

Tube Outside Diameter

0.188 inches

Material

Steel comp 1137 or steel comp 1141

Material Specification

66 federal standard all material responses

Surface Treatment

Cadmium

Recent Solicitations

Solicitation	Return by Date	Buyer Code	Quantity
SPE7M319T099H	2019-08-12	PMCM4	2503 EA
SPE7M318T3297	2018-02-08	PMCM4	834 EA
SPE7M317T6169	2017-07-10	PMCM4	1191 EA
SPE7M317T2335	2017-02-21	PMCM4	2700 EA
SPE7MC17T5542	2016-12-16	PMCMU	1753 EA

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 4730-00-277-6451 Datasheet

Supply Class (FSC):

Railing Fittings Lubrication Tube Pipe Hose

Cross Reference:

AN818-3
AN818
AN818-3
AN818-3
AS4841
8176326
MILF5509A
AN818-3
AN818-3
AN818
AN818-3
AN818-3
AS4841
8176326
MILF5509A
AN818-3

Cage Codes:

Aeronautical Standards Group (CAGE 88044)
Hydro Fitting Manufacturing (CAGE 13899)
Crown Fitting Co Inc (CAGE 22995)
Society Of Automotive Engineers Inc (CAGE 81343)
U S Army Aviation and Missile (CAGE 18876)
Military Specifications (CAGE 81349)
Collins Engineering Corp (CAGE 71563)

Replacements:

4730-00-277-6451 replaces 4730-00-287-0293

Schedule B & Trade:

Schedule B: 7318160000 (NAICS 332722)

Nuts of iron or steel
SITC: 69421

Screws, bolts, nuts, screw hooks, rivets, washers and similar articles, threaded, of iron or steel
End Use: 12300

Finished metal shapes

Identification:

HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:

NMFC:

093486 - Bolts, nuts or screws, noi (sub 3)
WCC:

573 - Bolts or nuts (iron or steel),(less than 35 feet)
SHC:

9 - Other or no special handling required (sh)
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC:

B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater
LTL:

W - Rating variable
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Sms
AAC
D
Quantity per pack
10
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
J2200x-
Repariability
This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $3.81 to $6.35..
Does NSN 4730-00-277-6451 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army, Department Of The Air Force, Department Of The Navy, Poland, Bulgaria, Brazil, Spain, Israel, Singapore, Kuwait, Malaysia, Australia, Belgium, Canada, New Zealand, Germany, Republic Of Korea, United Kingdom, Denmark, Norway, Greece, and Turkey
What is the NIIN of NSN 4730-00-277-6451?
002776451 or 00-277-6451
Does NSN 4730-00-277-6451 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4730-00-277-6451?
Solicitation SPE7M319T099H for qty 2503 on 08/02/2019
When was this national stock number assigned to the federal catalog?
Jan 01, 1961