0.018" Shafts | McMaster-Carr

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23 Products

About Tool Steel

About Stainless Steel

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

View a wire gauge conversion chart.

Low-Carbon Steel Wire

Heat Treatment: Annealed (Softened)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated
Tensile Strength: 70,000 psi
Specifications Met: ASTM A853

Also known as black-annealed wire, this low-carbon steel wire will stay in place when bent. It's commonly used for bundling and as tag wire. This material can be surface hardened with heat treating.

					Container
Dia.	Dia. Tolerance	Lg., ft.	Color	Max. Temperature, °F	Net Weight, lbs.	Type		Each
Matte
0.018"	-0.003" to 0.003"	285	Dark Gray	300°	1/4	Spool	0000000	00000
0.018"	-0.003" to 0.003"	1,140	Dark Gray	300°	1	Spool	0000000	00000
0.018"	-0.003" to 0.003"	5,720	Dark Gray	300°	5	Spool	0000000	00000
0.018"	-0.003" to 0.003"	11,440	Dark Gray	300°	10	Spool	0000000	00000

Zinc-Galvanized Steel Wire

Heat Treatment: Annealed (Softened)
Heat Treatable: No
Tensile Strength: 70,000 psi
Specifications Met: ASTM A641

This wire is zinc galvanized for good corrosion resistance. It will stay in place when bent and is commonly used for bundling and as tag wire.

				Container
Dia.	Dia. Tolerance	Lg., ft.	Max. Temperature, °F	Net Weight, lbs.	Type		Each
0.018"	-0.003" to 0.003"	285	300°	1/4	Spool	0000000	00000
0.018"	-0.003" to 0.003"	1,140	300°	1	Spool	0000000	00000
0.018"	-0.003" to 0.003"	5,720	300°	5	Spool	0000000	00000
0.018"	-0.003" to 0.003"	11,440	300°	10	Spool	0000000	00000

				1 ft. Lg.
Dia.	Dia. Tolerance	Max. Temperature, °F	Pkg. Qty.		Pkg.
0.018"	-0.003" to 0.003"	300°	50	0000000	000000

Lubricated 1080 Spring Steel Wire

Heat Treatment: Hardened
Tensile Strength: 261,000 psi
Specifications Met: ASTM A228

Also known as music wire. This wire is coated with phosphate for corrosion resistance and lubricity. Use it for bundling and as tag wire. It will spring back after bending.

1/4 lbs. Coil
Dia.	Dia. Tolerance	Heat Treatment	Temperature Range	Lg., ft.		Each
0.018"	-0.0005" to 0.0005"	Hardened	Not Rated	285	0000000	00000
1 lbs. Coil
0.018"	-0.0005" to 0.0005"	Hardened	Not Rated	1,155	0000000	00000
5 lbs. Coil
0.018"	-0.0005" to 0.0005"	Hardened	Not Rated	5,785	00000000	000000

					1 ft. Lg.
Dia.	Dia. Tolerance	Heat Treatment	Temperature Range	Pkg. Qty.		Pkg.
0.018"	-0.0005" to 0.0005"	Hardened	Not Rated	100	0000000	000000

Spring-Back Multipurpose 304 Stainless Steel Wire

This wire bounces back after bending. Often used to construct springs and wire rope, 304 stainless steel is a good all-around choice for a wide range of applications.

PTFE-coated wire has a slippery surface, so it’s especially useful as a fish wire when navigating through confined spaces.

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

Coils

Coil

Heat Treatment: Hardened
Tensile Strength: 205,000 psi
Specifications Met: ASTM A313, ASTM A555

				1/4 lbs. Coil			1 lbs. Coil
Dia.	Dia. Tolerance	Fabrication	Max. Temperature, °F	Lg., ft.		Each	Lg., ft.		Each
Mirror-Like
0.018"	-0.0004" to 0.0004"	Cold Drawn	570°	285	0000000	000000	1,145	0000000	000000

PTFE-Coated Wire

PTFE-Coated Wire (68" Length)

Heat Treatment: Hardened
Tensile Strength: Not Rated
Specifications Met: ASTM A313

				68" Lg.
Dia.	Dia. Tolerance	Finish Color	Max. Temperature, °F		Each
0.018"	-0.0005" to 0.0005"	Gray	500°	0000000	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
0.018"	-0.0002" to 0"	77	7/8"	Precision Ground	0.012" per ft.	00000000	00000

Hardened Oversized High-Speed M2 Tool Steel Rods

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

Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. 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	Reamer Size	Lg.	Lg. Tolerance	Mechanical Finish	Straightness Tolerance		Each
0.018"	0" to 0.0002"	77	7/8"	-1/32" to 1/32"	Precision Ground	0.012" per ft.	00000000	00000

Super-Elastic Nitinol Wire

Temper: Spring (Hardened)
Tensile Strength: 181,000 psi

Commonly used for eyeglass frames and antennas, this wire bounces back to its original shape after bending, stretching, and twisting. Nitinol is a nickel-titanium alloy.

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

Coils

Coil

				30 ft. Lg.		100 ft. Lg.
Dia.	Dia. Tolerance	Container Type	Finish		Each		Each
0.018"	-0.0004" to 0.0004"	Coil	Black Oxide	0000000	000000	0000000	0000000

2 ft. Lengths

Dia.	Dia. Tolerance	Finish	Pkg. Qty.		Pkg.
0.018"	-0.0004" to 0.0004"	Black Oxide	5	0000000	000000

Platinum Wire

Hardness: Rockwell B97 (Medium)

99.95% pure, this platinum wire is used for applications that require a soft material that resists corrosion and oxidation and has a high melting point. This wire allows heat and electricity to pass and resists oxide buildup, making it ideal for thermocouple probes, which require accurate readings even at high temperatures. Soft enough to create a good seal between two flanges, it's also used to make high-vacuum O-rings. Platinum's softness means it won't damage the flanges, so they can be used again. The high melting point of this wire makes it a better choice for sealing heated flanges than other materials such as gold.

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

			Spool
Diameter	Diameter Tolerance	Melting Point Temperature, °F	Length, ft.		Each	Length, ft.		Each
0.018"	-0.0005" to 0.0005"	3215°	1	0000000	0000000	5	0000000	000000000