13mm Rods | McMaster-Carr

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.

If you don't see the rod size you're looking for, please specify a length under additional 304/304L stainless steel 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 ACTIVITY after your order ships.

304 Stainless Steel Rods

Yield Strength: 30,000 psi
Hardness: Rockwell B80 (Medium)
Heat Treatment: Annealed (Softened)
Heat Treatable: No

Dia., mm	Dia. Tolerance, mm	Fabrication	Straightness Tolerance		1 ft. Lg.	1 1/2 ft. Lg.	3 ft. Lg.
13	-0.043 to 0	Cold Worked	1 mm per 1 m	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 ACTIVITY 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: ASTM A564, ASTM A582

Metric
Dia.	Fabrication	Straightness Tolerance	Dia. Tolerance		1 ft. Lg.	1 1/2 ft. Lg.	3 ft. Lg.
13mm	Cold Drawn	1 mm	-0.043mm to 0mm	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.

Ground rods are decarb-free for a uniform surface that will consistently accept 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 ACTIVITY after your order ships.

Dia., mm	Dia. Tolerance, mm	Yield Strength, psi	Hardness	Max. Hardness After Heat Treatment	Mechanical Finish	Specifications Met		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
13	-0.01 to 0	50,000	Rockwell B85 (Medium)	Not Rated	Ground, Polished, Turned	ASTM A108, ASTM A29	000000	000000	000000	000000

Tight-Tolerance Ultra-Machinable 12L14 Carbon Steel Rods

Yield Strength: 65,000 psi
Hardness: Rockwell B80 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C65
Specifications Met: ASTM A108

Ready for turning in a lathe, these rods are precision ground and held to a strict straightness tolerance. The lead additive acts as a lubricant, which allows 12L14 carbon steel to withstand very fast machining. It's used to fabricate a wide variety of machine parts.

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 ACTIVITY after your order ships.

Dia.	Dia. Tolerance	Heat Treatment	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
13mm	-0.012mm to 0mm	Annealed (Softened)	Precision Ground	1/16" per 3 ft.	00000000	00000	000000	000000

Tight-Tolerance Multipurpose Air-Hardening A2 Tool Steel Rods

Precision ground and held to a strict straightness tolerance, these rods are ready for turning in your lathe. They’re also known as drill rod. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.

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 ACTIVITY after your order ships.

Metric Rods

Yield Strength: 55,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C62
Specifications Met: ASTM A681

Dia., mm	Dia. Tolerance, mm	Heat Treatment	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
13	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	000000	000000	000000

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 ACTIVITY after your order ships.

			3 ft. Lg.
Dia.	Dia. Tolerance	Mechanical Finish
13mm	-0.025mm to 0.025mm	Precision Ground	00000000

Linear Motion Shafts

Smooth, hard, and wear resistant, linear motion shafts work with linear bearings to reduce friction in manual and automated systems, such as those found in packing, machine tool, and material handling operations. The smooth surface reduces friction and wear on the bearing—the lower the microinch value a shaft has, the smoother its finish and the less friction it will create. All are turned, ground, and polished to tight diameter and straightness tolerances.

Steel shafts are generally stronger than aluminum and stainless steel shafts but not as corrosion resistant. 52100 alloy steel shafts are good for high-load applications. They are, however, more difficult to machine than carbon steel shafts.

Shafts with chamfered edges have their edges ground to reduce damage to bearings, housings, and other components during installation.

Case-hardened shafts are hardened only on the surface of the shaft, which increases wear resistance while allowing the center to remain soft for absorbing stresses caused by shifting loads.

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

Metric—52100 Alloy Steel

13 mm Dia. (Tolerance: -0.017 mm to -0.006 mm)
Lg., mm	Lg. Tolerance, mm	Straightness Tolerance	Surface Smoothness	Edge Type	Hardness Rating	Hardness	Heat Treatment	Yield Strength, psi		Each
200	-0.8 to 0.8	0.050 mm per 300 mm	16 microinch	Chamfered	Very Hard	Rockwell C59	Case Hardened	128,000	00000000	000000
400	-0.8 to 0.8	0.050 mm per 300 mm	16 microinch	Chamfered	Very Hard	Rockwell C59	Case Hardened	128,000	00000000	00000
500	-0.8 to 0.8	0.050 mm per 300 mm	16 microinch	Chamfered	Very Hard	Rockwell C59	Case Hardened	128,000	0000000	00000
1,000	-0.8 to 0.8	0.050 mm per 300 mm	16 microinch	Chamfered	Very Hard	Rockwell C59	Case Hardened	128,000	0000000	00000
1,200	-0.8 to 0.8	0.050 mm per 300 mm	16 microinch	Chamfered	Very Hard	Rockwell C59	Case Hardened	128,000	0000000	00000

Threaded Linear Motion Shafts

Threaded End × Straight End

Threaded on Both Ends

Mount these externally threaded shafts into tapped holes rather than using a shaft support, or attach a hex nut, shaft collar, or other threaded accessory. Smooth, hard, and wear resistant, linear motion shafts work with linear bearings to reduce friction in manual and automated systems, such as those found in packing, machine tool, and material handling operations. The smooth surface reduces friction and wear on the bearing—the lower the microinch value a shaft has, the smoother its finish and the less friction it will create. Shafts are case-hardened to increase hardness and wear resistance on the surface of the shaft while allowing the center to remain soft for absorbing stresses caused by shifting loads. The edges are chamfered to remove sharp corners, reducing damage to bearings, housings, and other components during installation. All are turned, ground, and polished to tight diameter and straightness tolerances.

440C stainless steel shafts are more corrosion resistant than steel shafts, but they’re not as hard and can be more difficult to machine.

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

Threaded End × Straight End

	Thread
Lg.	Size	Lg.	Step Lg.	Straightness Tolerance	Surface Smoothness, microinch	Edge Type	Heat Treatment	Yield Strength, psi		Each
Metric—52100 Alloy Steel (Rockwell C60)
13mm Dia.
100mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
150mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
300mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
400mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
500mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
600mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
800mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
1,000mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
1,200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
Metric—440C Stainless Steel (Rockwell C56)
13mm Dia.
100mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
150mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	00000
300mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
400mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
500mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
600mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
800mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
1,000mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
1,200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000

Threaded on Both Ends

	Thread
Lg.	Size	Lg.	Step Lg.	Straightness Tolerance	Surface Smoothness, microinch	Edge Type	Heat Treatment	Yield Strength, psi		Each
Metric—52100 Alloy Steel (Rockwell C60)
13mm Dia.
150mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	000000
200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	00000
300mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	00000
400mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	000000
500mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	000000
600mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	000000
800mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	000000
1,000mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	000000
1,200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	57,000	00000000	000000
Metric—440C Stainless Steel (Rockwell C56)
13mm Dia.
150mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
300mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
400mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
500mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
600mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
800mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
1,000mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000
1,200mm	M8	10mm	16mm	0.002" per ft.	16	Chamfered	Case Hardened	14,000	00000000	000000

Splined Shafts for Rotary and Linear Motion

Splined on Both Ends

Grooves on the surface of these shafts transmit rotary power while allowing bearings to move freely along the length of the shaft. The edges are chamfered to remove sharp corners, reducing damage to bearings, housings, and other components during installation. All are turned, ground, and polished to tight diameter and straightness tolerances.

Four Splines

Shafts with four splines work with ball spline bearings, which create relatively little friction. They're commonly found in robotic and other automated systems that require complex, fast movements. They don't transmit as much torque as shafts with six splines.

All four-spline shafts are 52100 alloy steel for high strength. They're case-hardened to increase hardness and wear resistance on the surface of the shaft while allowing the center to remain soft for absorbing stresses caused by shifting loads.

Some of our four-spline shafts have a step-down end, which has been ground smooth and round like a standard shaft. Mount bearings, gears, and other round-bore components.

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

4 Splines (Metric—52100 Alloy Steel)

Four Splines

Splined End × Splined End
Dia., mm	Dia. Tolerance, mm	Lg., mm	Lg. Tolerance, mm	Spline Lg., mm	Surface Smoothness, microinch	Edge Type	Yield Strength, psi		Each
13	-0.02 to 0	200	-0.05 to 0.05	200	16	Chamfered	57,500	000000000	000000
13	-0.02 to 0	500	-0.08 to 0.08	500	16	Chamfered	57,500	000000000	000000
13	-0.02 to 0	700	-0.08 to 0.08	700	16	Chamfered	57,500	000000000	000000
13	-0.02 to 0	1,000	-0.08 to 0.08	1,000	16	Chamfered	57,500	000000000	000000
13	-0.02 to 0	1,500	-0.08 to 0.08	1,500	16	Chamfered	57,500	000000000	000000

Multipurpose Flame-Retardant Garolite G-10/FR4 Rods

Color: See Table
Temperature Range: -100° F to 245° F
Tensile Strength: 35,000-50,000 psi (Excellent)
Impact Strength: 5.5-12 ft.-lbs./in. (Excellent)
Hardness: Rockwell M115 (Extra Hard)
For Use Outdoors: Yes
Specifications Met: MIL-I-24768/27, UL 94 V-0

Made of a flame-retardant epoxy resin with fiberglass fabric reinforcement, these G-10/FR4 rods are a good all-around choice. They are strong, machinable, and electrically insulating. Garolite G-10/FR4 is also called epoxy-grade industrial laminate and phenolic.

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

Rods

Green
Dia.	Dia. Tolerance		1 ft. Lg.	4 ft. Lg.
13mm	-0.026mm to 0.026mm	00000000	000000	000000

Metric Precision Ball Screws and Nuts

Precision cut threads make these metric ball screws approximately four times more accurate than standard ball screws. Use them when exact positioning is essential. They come with finished ends and the nut already on, so they’re ready to use right away. The ball nuts have a flange design that makes it easy to mount objects on them. Inside, they have ball bearings to produce smooth, low-friction travel for applications that require high-speed and repeatable movement.

Root diameter indicates the diameter the ball screw will be after machining away the threads.

Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.

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

	Ball Screw		Flange Ball Nut
Thread Size	Lg., mm	Root Dia., mm	Lg., mm	Dia., mm	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Temp. Range, °F		Each
Carbon Steel Ball Screw with Alloy Steel Flange Ball Nut
M8	115	7.3	15	13	1	1	±0.023 mm per 300 mm	Rockwell C58	140	0	Not Rated to 175°	0000000	0000000
M8	145	7.3	15	13	1	1	±0.023 mm per 300 mm	Rockwell C58	140	0	Not Rated to 175°	00000000	000000
M8	175	7.3	15	13	1	1	±0.023 mm per 300 mm	Rockwell C58	140	0	Not Rated to 175°	00000000	000000
M8	225	7.3	15	13	1	1	±0.023 mm per 300 mm	Rockwell C58	140	0	Not Rated to 175°	00000000	00000000

Metric Ball Screws and Nuts

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, these have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread size and travel distance per turn. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.

Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.

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

Ball Screws with Flange Ball Nut—Right-Hand Threaded

Root diameter indicates the diameter the ball screw will be after machining away the threads.

	Ball Screw			Flange Ball Nut
Thread Size	Lg., mm	Root Dia., mm	Tensile Strength, psi	Lg., mm	Dia., mm	No. of Thread Starts	Travel Distance per Turn, mm	Accuracy for Travel Distance per Turn	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Temperature Range, °F		Each
Carbon Steel Ball Screw with Alloy Steel Flange Ball Nut
M6	150	5.3	21,000	21	13	1	1	±0.210 mm per 300 mm	Rockwell C58	150	0.05	5° to 175°	0000000	0000000
M6	250	5.3	21,000	21	13	1	1	±0.210 mm per 300 mm	Rockwell C58	150	0.05	5° to 175°	000000	000000

Ultra-High-Temperature Quartz Glass Rods and Discs

Color: Clear
Max. Temperature: 2100° F
Fabrication: Annealed

Able to withstand temperatures up to 2100° F, this quartz glass is useful in high-temperature applications that also require optical clarity, such as high-intensity lighting, fiber-optic production, and optical lens systems. It provides excellent UV transmission, as well as high transmission in the visible and infrared ranges.

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

Rods

				12" Lg.		24" Lg.		48" Lg.
Dia., mm	Dia. Tolerance, mm	Edge Fabrication	Lg. Tolerance		Each		Each		Each
13	-0.380 to 0.380	Ground	-0.125" to 0.125"	00000000	000000	00000000	000000	00000000	000000