5mm Wire | McMaster-Carr

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10 Products

About Copper, Brass, and Bronze

About Stainless Steel

About Aluminum

About Tool Steel

About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron

Tight-Tolerance Multipurpose 304 Stainless Steel

This material has tighter tolerances than standard 304 stainless steel. From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications. It maintains its corrosion resistance in temperatures up to 1500° F.

Rods are precision ground and straightened, so they’re ready for turning in your lathe.

Steel that meets ASTM or SAE specifications complies with standards for materials.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Rods

Yield Strength: See Table
Hardness: See Table
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met: See Table

Dia.	Dia. Tolerance	Yield Strength, psi	Fabrication	Hardness	Specifications Met	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
5mm	-0.0127mm to 0.0127mm	25,000	Cold Worked	Rockwell B80 (Medium)	ASTM A276, ASTM A479, SAE AMS-QQ-S-763, SAE AMS5639	Not Rated	0000000	000000	000000	000000

Tight-Tolerance Easy-to-Machine 303 Stainless Steel

This material has tighter tolerances than standard 303 stainless steel. Widely used for fabricating fittings and fasteners, 303 stainless steel machines quickly without sticking to cutting tools. It maintains its corrosion resistance in temperatures up to 1500° F.

Rods are precision ground and held to a strict straightness tolerance, so they are ready for turning in a lathe.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Rods

Yield Strength: 35,000 psi
Hardness: See Table
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met: ASTM A582, SAE AMS5640

Dia.	Dia. Tolerance	Fabrication	Hardness	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
5mm	-0.0127mm to 0.0127mm	Cold Worked	Rockwell B85 (Medium)	1/8" per 6 ft.	0000000	000000	000000	000000

Easy-to-Machine 303 Stainless Steel

Widely used for fabricating fittings and fasteners, 303 stainless steel machines quickly without sticking to cutting tools. It maintains its corrosion resistance in temperatures up to 1500° F.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Rods

Yield Strength: 25,000 psi
Hardness:
Inch Sizes: Rockwell B77 (Medium)
Metric Sizes: Rockwell B85 (Medium)
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met:
Inch Sizes: ASTM A582
Metric Sizes: EN 10088-3

Metric
Dia.	Fabrication	Straightness Tolerance	Dia. Tolerance		1 ft. Lg.	1 1/2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
5mm	Cold Drawn	1 mm	-0.03mm to 0mm	0000000	00000	00000	000000	000000

Tight-Tolerance Corrosion-Resistant 316 Stainless Steel

This material is precision ground to offer tighter tolerances than standard 316 stainless steel. The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications. It maintains its corrosion resistance in temperatures up to 1500° F.

Rods are held to a strict straightness tolerance, so they’re all set for turning in your lathe.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Rods

Yield Strength: 30,000 psi
Hardness: Rockwell B75 (Medium)
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met: ASTM A276, SAE AMS5648

316 Stainless Steel
Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
5mm	-0.0127mm to 0.0127mm	Cold Worked	1/8" per 6 ft.	0000000	000000	000000	000000

Corrosion-Resistant 316 Stainless Steel

The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications. It maintains its corrosion resistance up to the maximum temperature.

If you don’t see the rod size you’re looking for, please specify a length under additional rod lengths.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Rods

Yield Strength:
Inch Sizes: 30,000 psi
Metric Sizes: 29,000 psi
Hardness:
Inch Sizes: Rockwell B75 (Medium)
Metric Sizes: Rockwell B80 (Medium)
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met:
Inch Sizes: ASTM A276

316 Stainless Steel
Dia.	Dia. Tolerance	Fabrication	Max. Temp., °F	Straightness Tolerance		1 ft. Lg.	1 1/2 ft. Lg.	3 ft. Lg.
Metric
5mm	-0.03mm to 0mm	Cold Drawn	1500°	1 mm	0000000	000000	000000	000000

Low-Carbon Steel Rods and Discs

Yield Strength: See table
Hardness: See table
Heat Treatable: Yes
Max. Hardness After Heat Treatment: See table
Specifications Met: See table

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating.

If you don't see the size you're looking for, please specify a length under additional rod lengths.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia., mm	Dia. Tolerance, mm	Yield Strength, psi	Hardness	Max. Hardness After Heat Treatment	Specifications Met		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
5	-0.05 to 0	60,000	Rockwell B85 (Medium)	Not Rated	ASTM A108	0000000	00000	00000	000000

Easy-to-Machine Architectural 385 Brass Rods

Yield Strength:
Inch sizes: 16,000 psi
Metric sizes: 21,000 psi
Hardness:
Inch sizes: Rockwell B40 (Soft)
Metric sizes: Rockwell B55 (Soft)
Temper:
Inch sizes: H02 (1/2 Hard)
Metric sizes: 1/2 Hard
Heat Treatable: No
Specifications Met:
Inch sizes: ASTM B455
Metric Sizes: European Standard EN 12164

Often called architectural bronze, 385 brass is easy to machine and has excellent formability when heated. It is typically used for handrails, ornamental trim, and hardware, such as hinges and lock bodies.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

			1 m Lg.
Dia., mm	Dia. Tolerance Range, mm	Straightness Tolerance		Each
5	-0.05	.4 mm per 400 mm	0000000	000000

Tight-Tolerance High-Strength 7075 Aluminum Rods

Yield Strength: 73,000 psi
Hardness: Brinell 150 (Medium)
Temper: T6
Fabrication: Cold Worked
Specifications Met: ASTM B211

Ready for turning in a lathe, these rods are precision ground and held to a strict straightness tolerance. Originally developed for aircraft frames, uses for 7075 aluminum now include keys, gears, and other high-stress parts. It is often used as a replacement for 2024 aluminum because it’s stronger and provides similar performance in all other aspects.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Heat Treatment	Temperature Range, °F	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
5mm	-0.0127mm to 0.0000mm	Hardened	-320° to 210°	0.005" per ft.	0000000	000000	000000	000000

Hardened Undersized High-Speed M2 Tool Steel Rods

Yield Strength: Not Rated
Hardness: Rockwell C60 (Very Hard)

These rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Drill Bit Size	Lg.	Mechanical Finish	Straightness Tolerance		Each
5mm	-0.0050mm to 0.0000mm	5 mm	3 5/8"	Precision Ground	0.012" per ft.	00000000	00000

Tight-Tolerance Multipurpose Oil-Hardening O1 Tool Steel Rods

Yield Strength: 50,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment:
Inch sizes: Rockwell C65
Metric sizes: Rockwell C62
Specifications Met: ASTM A681

Ready for turning in a lathe, these rods are precision ground to a tight diameter tolerance. They’re also known as drill rod. Often used for dies, punches, and gauges, O1 tool steel is an oil-hardening material that resists wear and abrasion.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

			3 ft. Lg.
Dia.	Dia. Tolerance	Mechanical Finish
5mm	-0.013mm to 0.013mm	Precision Ground	00000000