Best 11/16-Inch Steel Rods for Machining and Projects

For an exact 11/16-inch steel rod, the O1 oil-hard drill rod is listed at 0.6875 inch, while the 303 stainless rod is listed at 0.687 inch. The O1 rod is a 36-inch option; the 303 rod is 3 feet long. The other listed products differ in material or diameter, so check dimensions carefully before choosing. The comparison below identifies what each option offers and where its listed size may not match an exact 11/16-inch requirement.

Product Listed material and size Best suited for
O1 drill rod Steel, 11/16 inch, 36 inches long Buyers needing the exact fractional diameter
303 stainless rod Stainless steel, 0.687 inch, 3 feet long Buyers comparing a corrosion-resistant steel option
uxcell aluminum rod Aluminum alloy, listed as 11/16 inch Buyers who can use aluminum instead of steel
MECCANIXITY HSS rod High-speed steel, 11 mm diameter Buyers who need a smaller tool-steel rod
Gisafai 12L14 bars Steel, 3/4 inch diameter, two pieces Buyers who can use a larger diameter

O1 Oil-Hard Drill Rod

O1 oil-hard drill rod, 11/16 inch

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This is the clearest match for a buyer searching for an 11/16-inch steel rod. Its listed fractional size is 11/16 inch, equivalent to 0.6875 inch, and its listed length is 36 inches. The product is identified as O1 oil-hard drill rod.

  • Best for: Buyers who need a full-length rod at the exact stated fractional diameter.
  • Why it was selected: It directly matches the requested 11/16-inch steel size and specifies a 36-inch length.
  • Consideration: The listing provides limited detail beyond material, diameter, and length, so confirm any machining or heat-treatment requirements before ordering.

303 Stainless Steel Round Rod

303 stainless steel round rod with 0.687-inch diameter

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This cold-worked 303 stainless steel rod is listed as 0.687 inch in diameter and 3 feet long. Its stated diameter is 0.0005 inch smaller than 0.6875 inch, the exact decimal equivalent of 11/16 inch. The product listing gives a diameter tolerance of plus or minus 0.003 inch and references ASTM A582.

  • Best for: Buyers who want a stainless steel rod and can accept the stated 0.687-inch size and tolerance.
  • Why it was selected: It is a long round steel stock option close to 11/16 inch in diameter.
  • Consideration: Do not treat its nominal 0.687-inch diameter as an exact 0.6875-inch measurement; the stated tolerance is wider than that difference.

uxcell 7075 Aluminum Round Rod

uxcell 7075 aluminum round rod

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This product is not steel, but it is relevant if the search is for round stock near 11/16 inch and aluminum is acceptable. The listing describes one 7075 aluminum alloy rod, 11 inches long, with a diameter given as both 18 mm and 11/16 inch. The seller says it can be cut, processed, and welded.

  • Best for: Buyers who specifically need aluminum alloy stock rather than steel.
  • Why it was selected: It is the only listed short rod labeled 11/16 inch and offers a cuttable 11-inch length.
  • Consideration: The listing gives both 18 mm and 11/16 inch; those measurements are not identical. Verify the required diameter before purchase.

MECCANIXITY High-Speed Steel Rod

MECCANIXITY high-speed steel round rod

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This high-speed steel rod is listed as 11 mm (0.43 inch) in diameter and 200 mm (7.87 inches) long, so it is substantially smaller than 11/16 inch. The listing states a hardness of HRC 61–63 and describes uses such as turning, threading, grooving, and boring.

  • Best for: Buyers making small tooling or precision parts who need HSS rather than a 11/16-inch bar.
  • Why it was selected: It is a steel round stock product with specific machining and tool-making applications.
  • Consideration: Avoid this option if the project requires a 0.6875-inch diameter; its listed diameter is only 11 mm.

Gisafai 12L14 Steel Bars

Two Gisafai 12L14 steel round bars

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This set includes two 12L14 steel bars, each listed as 3/4 inch in diameter and 12 inches long. The larger diameter makes this a possible alternative only when a project can accommodate 3/4-inch stock or the buyer plans to machine it to a smaller size.

  • Best for: Buyers who need two short alloy steel bars and can work with a 3/4-inch starting diameter.
  • Why it was selected: It is round steel stock in a useful short length, with two pieces included.
  • Consideration: The 3/4-inch diameter is larger than 11/16 inch; it is not a direct-size replacement.

Buying Guide: How To Choose An 11/16-Inch Steel Rod

Does the diameter need to be exact?

Check both the nominal size and the stated tolerance. An exact 11/16-inch diameter equals 0.6875 inch. The O1 listing gives 11/16 inch, while the 303 rod is listed at 0.687 inch with a plus-or-minus 0.003-inch tolerance. If the part must fit a close-tolerance opening, confirm the required measurement and tolerance before ordering.

Which material should you choose?

Choose a steel product when the project requires steel. The O1 drill rod is the direct fractional-size match; the 303 option is stainless steel but has a slightly different nominal diameter. Aluminum is a different material, and the 11 mm HSS rod is much smaller. The 12L14 bars are steel but larger than the target diameter.

How much length do you need?

Compare the listed lengths with the finished part and any cutting allowance. The O1 rod is listed at 36 inches, the 303 stainless rod at 3 feet, and the shorter alternatives range from 7.87 to 12 inches. The aluminum listing gives an 11-inch length. Do not assume a listed rod can be supplied in another length.

Should you buy an alternative diameter?

A larger bar may be workable if the project includes machining, but a smaller bar cannot provide a full 11/16-inch finished diameter. Consider material, available equipment, and the required final dimensions before choosing a non-matching size.

Frequently Asked Questions

What is 11/16 inch in decimal form?

11/16 inch equals 0.6875 inch.

Which listed product directly matches 11/16-inch steel?

The O1 oil-hard drill rod is listed as 11/16 inch (0.6875 inch) in diameter and 36 inches long.

Is the 303 stainless rod exactly 11/16 inch?

It is listed as 0.687 inch, not 0.6875 inch, and has a stated tolerance of plus or minus 0.003 inch. Check whether that specification suits the application.

Is the uxcell rod steel?

No. Its listing describes a 7075 aluminum alloy rod, despite labeling its diameter as 11/16 inch.

Can an 11 mm rod replace an 11/16-inch rod?

Not when the finished part needs a 11/16-inch diameter. The MECCANIXITY rod is listed at 11 mm, or about 0.43 inch, which is substantially smaller.