Tube Coupling Nut

NSN: 4730-00-001-3956 | Model: ST57D100-1

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

4730-00-001-3956

DEMIL

Thread Class

Thread Direction

Right-hand

Fabrication Method

Machined

Nut Style

Tube coupling

Nut Height

Between 0.650 inches and 0.670 inches

End Application

Aircraft, prowler ea=6b

Width Across Flats

Between 0.557 inches and 0.567 inches

Length To Shoulder

Between 0.515 inches and 0.535 inches

Smallest Inside Diameter

Between 0.317 inches and 0.320 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.438 inches

Tube Outside Diameter

0.250 inches

Seat Angle

45.00 degrees

Special Features

3000 psi operating pressure at max of 275 degrees

Material

Steel comp 304

Material Specification

Qq-s-763 federal specification single material response

Surface Treatment

Passivate

Surface Treatment Specification

Mil-s-5002 military specification single treatment response

Recent Solicitations

Solicitation	Return by Date	Buyer Code	Quantity
SPE7M318T8886	2018-06-11	C0138	743 PG
SPE7M318T4478	2018-03-05	C0138	622 PG
SPE7M317T7816	2017-09-11	PMCMD	913 PG
SPE7MC17TD865	2017-03-27	PMCMU	731 PG
SPE7M317T2915	2017-03-13	C0121	699 PG
SPE7M317T1361	2017-01-09	PMCMF	724 PG

Inventory Check

The last inventory check on this NSN was done on 10/25/2023. Due to rapid changes in inventory this may not be the current stock qty.

New Surplus: 71
New: 2878
Serviceable: 1

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 4730-00-001-3956 Datasheet

Supply Class (FSC):

Railing Fittings Lubrication Tube Pipe Hose

Cross Reference:

ST57D100-1
AC1170C04
H10006-04
D10006-J04
ST57D100
LD83096-4
D10006-4
D10006-4
D10006-04

Cage Codes:

Lockheed Martin Corporation (CAGE 04236)
Aeroquip Llc. Eaton (CAGE 00624)
Eaton Aerospace (CAGE 08199)
Designed Metal Connections, Inc. (CAGE 14798)

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

A - Item does not contain precious metal.

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
1
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 $23.00 to $38.34..
Does NSN 4730-00-001-3956 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, Brazil, Spain, Columbia, Israel, Singapore, Kuwait, Australia, Belgium, Canada, New Zealand, Germany, Republic Of Korea, United Kingdom, Netherlands, Italy, Denmark, Greece, and Turkey
What is the NIIN of NSN 4730-00-001-3956?
000013956 or 00-001-3956
Does NSN 4730-00-001-3956 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4730-00-001-3956?
Solicitation SPE7M318T8886 for qty 743 on 06/01/2018
When was this national stock number assigned to the federal catalog?
Sep 29, 1972