4130 STEEL TUBE 5/8X.035 3FT

Part# 03-03600-3
MFR Model# MILL 24


Please call for price on any unlisted size.
Discount of 10% for 100 ft. or more of same part number. 4130 is a chromium-molybdenum general purpose alloy steel tubing that is weldable and is capable of developing good strength. It has been for years the standard of the aircraft industry. Tensile Strength: 90,000 PSI. The stock sizes listed below can be furnished in lengths from 1 foot to 12 feet. Large orders are filled in random lengths from 10 to 12 feet unless specific lengths are requested. No charge is made for cutting stock sizes of tubing to mailable length. Quotations furnished on unlisted sizes.

If manufacturing test reports are required, there is a minimum $15.00 (USD) charge per order. Please indicate in the special instructions box at the time of order that certs are required.

Note: 1/8" tolerance on cuts
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Bryan C Verified Purchase

4130 STEEL TUBE 5/8X.035 3FT

July 28, 2022

came on scheduled time and packed well.

Lloyd E
May 18, 2021

Good packing and arrived on time.

Lloyd E
May 14, 2021

Great to have

Guillermo G
April 19, 2021


Bernard T
April 13, 2021

This 5/8 tube will be used to make bushings and spacers.

William J
March 30, 2021

Great tubing. Its manufactured by Plymouth tube company. Always top notch quality. There are a lot of suppliers out there that use cheaper made tubing, mainly from China and the reliability is not very good. Service from Aircraft Spruce great also. Quick

Rodney L
March 30, 2021

This will be used as part of a high pressure air plumbing project on a 2.5 inch to the foot model.of a 1920s era 3 foot gauge railroad freight car I am building, for a working air brake installation. I still.need to.locate and purchase the correct thread pipe thread tap and did for this tube size though. I am very pleased with Aircraft Spruce response and service orders!!!!

William J
March 22, 2021

First shipment of this item was wrong size tube. Second shipment was misdelivered by carrier and a trace was started by Aircraft Spruce! I got impatient and ordered again, that shipment of the third piece arrived next day. Then I received a Return Shipping label for the original incorrect tube received. Sent that back and next day received the second piece of correct tube, so I now have both correct tubes I paid for plus the Catalog I also requested! I am very happy with Aircraft Spruce response and service!!!!

William J
March 22, 2021

It arrived quickly, but the shipment had a separate problem that took two weeks to sort out. I have already converted the One foot long piece into the spacer bushings I needed with the help of a friends machine tools. I am well.pleased with the response by Aircraft Spruce in resolving the shipping problem.

William J
March 22, 2021


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is your 4130 tubing annealed or normalized?

All of our 4130 steel tubing is condition N, normalized.

Q: Is this tubing true seamless or DOM?

Yes, per the tech data sheet it is seamless. The manufacturing process is Drawn Over Mandrel (DOM). Essentially the answer is that it is both.

Q: Is your 4130 tubing "Made in the USA"?

Yes, this material is manufactured in the USA.

Q: What lengths of 4130 alloy steel round seamless tubing are most economical to ship? Is there a crating charge?

It's best to keep the lengths under 4', but we can ship up to 8' via standard ground transportation within the USA. Essentially, the longer (and heavier) the package, the higher the shipping cost.

Q: What AMS Spec does your 4130 Tubing conform to?

ASTM/A S1906

Q: Can this 4130 steel type be bent and flare using normal flaring tools?

It can be bent but I could not find any documents referring to how well this material can be flared.

Q: What is the tolerance on the diameters of the 4130 ALLOY STEEL ROUND SEAMLESS TUBES?

The tolerance is +/- 10%.

Q: Is this 4130 the same as those used on off road applications(cages)?

Yes, we have many customers in the off-road segment that use this material.

Q: Could the tubing be rolled for shipping - require 12Ft

No, 4130 cannot be coiled.

Q: What welding rod/wire is used for 4130?

ER70S-2 or ER80S-D2.

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