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  4. FSC 4710 - Tube and Rigid Tubing Pipe
  5. NSN 4710-01-055-3550

4710-01-055-3550

NIIN 01-055-3550 - Metal Tube Assembly

NSN 4710-01-055-3550 Classification

A length of tubing, straight, or prebent to a predetermined angle, with added component(s) that forms an end connection on one or both ends. For flexible tube assemblies, see hose assembly (as modified). For items having perforations in the tubing or attachments, see tube assembly, fire extinguishing system. Excludes:items having integral preformed or plain ends, tube, bent (as modified), and items which are branched or forked.

prebent design form, 0.250 inches nominal tube outside diameter, unable to decode tubing material, unable to decode mating end quantity, 0.022 inches nominal wall thickness

National Stock Number
4710-01-055-3550
Federal Supply Group
47 - Pipe, Tubing, Hose, and Fittings
Federal Supply Classification
4710 - Tube and Rigid Tubing Pipe
National Item Identification Number
01-055-3550
Item Name Code
21989
Assigned Date
Sat, Feb 4, 1978
Schedule B Code
8302494500
Requires Demilitarization
DEMIL/MLI

NSN 4710-01-055-3550 Specification

Set by the OEM (See RNCC code 3)

Design Form
prebent
Mating End Quantity
unable to decode
Tube Outside Diameter
0.250 inches nominal
Tubing Material
unable to decode
Wall Thickness
0.022 inches nominal
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 4710-01-055-3550 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
3166685-1 59364 3 2 2 SB - -
3166685-1 99193 5 9 2 SB - -
Price Quote

Get an up to date pricing and availability quote for 4710-01-055-3550.

Stock Availability

This product is available in the following quantities and conditions:

(SV) Serviceable 1
(AR) As Removed 1
(NE) New Material 1
In Stock 3
Availability of this item was last updated 08/17/2026 11:08 AM EDT.
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