40mm Rods | McMaster-Carr

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62 Products

About Shafts

About Stainless Steel

Selecting Compatible Lead Screws and Nuts

About Aluminum

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

About Composites

Multipurpose 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.

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 ORDER HISTORY 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.
40	-0.062 to 0	Cold Worked	1 mm per 1 m	0000000	0000000	0000000	0000000

Tight-Tolerance High-Strength 17-4 PH Stainless Steel

Each piece is precision ground to offer tighter tolerances than standard 17-4 PH stainless steel. With a higher chromium content than 15-5 PH stainless steel, this high-strength material offers better corrosion resistance. It's also known as 630 stainless steel. It maintains its corrosion resistance in temperatures up to 1100° F.

Rods are held to a strict diameter tolerance, so they’re ready 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: 118,000 psi
Hardness: See table
Heat Treatment: Annealed (Softened)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C47
Specifications Met: ASTM A564

Dia.	Dia. Tolerance	Fabrication	Hardness	Straightness Tolerance	Magnetic Properties		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40mm	-0.013mm to 0mm	Cold Worked	Rockwell C28 (Hard)	1/16" per ft.	Magnetic	0000000	0000000	0000000	0000000	0000000	0000000

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 ORDER HISTORY 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.
40	-0.02 to 0	50,000	Rockwell B85 (Medium)	Not Rated	Ground, Polished, Turned	ASTM A108	00000000	000000	0000000	0000000
40	-0.07 to 0	60,000	Rockwell B85 (Medium)	Not Rated	__	ASTM A108	0000000	00000	000000	000000

Tight-Tolerance Low-Carbon Steel Rods

Yield Strength: Not Rated
Hardness: Not Rated (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated
Specifications Met: ASTM A108

These rods are precision ground and held to a strict straightness tolerance, so they're ready for turning in a lathe. 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.

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	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40mm	-0.013mm to 0mm	Precision Ground	0.003" per ft.	0000000	000000	0000000	0000000

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 ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Mechanical Finish	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40mm	-0.012mm to 0mm	Precision Ground	1/16" per 3 ft.	00000000	000000	000000	0000000	0000000	0000000

Tight-Tolerance Multipurpose 4140 Alloy Steel Rods

Yield Strength: 60,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C60
Specifications Met: ASTM A108

Ready for turning in your lathe, these rods are precision ground and held to a strict straightness tolerance. Also known as chrome-moly steel, this versatile 4140 alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.

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	Mechanical Finish	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40mm	-0.013mm to 0mm	Annealed (Softened)	Precision Ground	1/16" per 3 ft.	0000000	000000	0000000	0000000	0000000	0000000

Chrome-Plated Hardened Multipurpose 4140 Alloy Steel Rods

Yield Strength: 100,000 psi
Hardness: Rockwell C30 (Hard)

The chrome plating on these rods increases corrosion resistance. They are hardened for increased abrasion and impact resistance. Also known as chrome-moly steel, this versatile 4140 alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.

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	Finish Thick.		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40mm	-0.038mm to 0mm	0.0005"	0000000	000000	0000000	0000000	0000000	0000000

High-Strength Multipurpose 4140 Alloy Steel Rods

Yield Strength: 130,000 psi
Hardness: Rockwell C32 (Hard)
Specifications Met: ASTM A108

Often called ETD-150, these rods are made from a modified version of 4140 alloy steel and have been drawn at high temperatures for excellent strength. Also known as chrome-moly steel, they are used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. They resist fracturing from repeated stress.

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	Straightness Tolerance		1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	0000000	0000000	0000000	0000000	0000000

Multipurpose 6061 Aluminum Rods and Discs

Yield Strength: 35,000 psi
Hardness:
Foot and inch sizes: Brinell 95 (Soft)
Metric sizes: Brinell 80 (Soft)
Temper: See table
Fabrication: See table
Specifications Met:
Cold Worked: ASTM B211
Extruded: ASTM B221

The most widely used aluminum, 6061 is fabricated into everything from pipe fittings and containers to automotive and aerospace parts. It is strong and corrosion resistant, plus it's easy to machine and weld.

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	Fabrication	Temper	Heat Treatment	Temperature Range, °F	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40	-0.310 to 0.310	Extruded	T6	Hardened	-320° to 300°	0.0125" per ft.	0000000	000000	000000	0000000

Tight-Tolerance Multipurpose 6061 Aluminum Rods and Discs

These rods and discs are precision ground to offer tighter tolerances than standard 6061 rods and discs. The most widely used aluminum, 6061 is fabricated into everything from pipe fittings and containers to automotive and aerospace parts. It is strong and corrosion resistant, plus it's easy to machine and weld.

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.

Dia., mm	Dia. Tolerance, mm	Fabrication	Heat Treatment	Mechanical Finish	Temperature Range, °F	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
40	-0.013 to 0.013	Extruded	Hardened	Precision Ground	-320° to 300°	0.021" per ft.	0000000	000000	0000000	0000000

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.
40mm	-0.0127mm to 0.0000mm	Hardened	-320° to 210°	0.005" per ft.	0000000	0000000	0000000	0000000

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. 1055 and 1060 carbon steel shafts balance high strength and good machinability, making them ideal for general purpose use. 1566 carbon steel shafts have a higher yield strength than 1055 and 1060 carbon steel shafts for supporting heavier loads. 52100 alloy steel shafts are good for high-load applications. They are, however, more difficult to machine than carbon steel shafts.

Stainless steel shafts are more corrosion resistant than steel shafts; however, they’re not as hard as steel shafts and can be more difficult to machine. 420 stainless steel and 440C stainless steel shafts have good corrosion resistance. 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—1055 Carbon Steel

40 mm Dia. (Tolerance: -0.016 mm to 0 mm)
Lg., mm	Lg. Tolerance, mm	Straightness Tolerance	Surface Smoothness, microinch	Edge Type	Hardness Rating	Hardness	Heat Treatment	Yield Strength, psi		Each
200	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C59	Case Hardened	50,000	00000000	000000
500	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C59	Case Hardened	50,000	0000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C59	Case Hardened	50,000	0000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C59	Case Hardened	50,000	0000000	000000
1,500	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C59	Case Hardened	50,000	0000000	000000
2,000	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C59	Case Hardened	50,000	0000000	000000
2,500	-2 to 2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C59	Case Hardened	50,000	0000000	000000

Metric—1566 Carbon Steel

40 mm Dia. (Tolerance: -0.01 mm to 0 mm)
Lg., mm	Lg. Tolerance, mm	Straightness Tolerance	Surface Smoothness, microns	Edge Type	Hardness Rating	Hardness	Heat Treatment	Yield Strength, psi	Surface Yield Strength, psi		Each
500	-1 to 1	0.03 mm per 300 mm	0.2	Chamfered	Very Hard	Rockwell C60	Case Hardened	84,000	140,000	00000000	000000
750	-1 to 1	0.03 mm per 300 mm	0.2	Chamfered	Very Hard	Rockwell C60	Case Hardened	84,000	140,000	00000000	000000
1,500	-1 to 1	0.03 mm per 300 mm	0.2	Chamfered	Very Hard	Rockwell C60	Case Hardened	84,000	140,000	00000000	000000
2,000	-1 to 1	0.03 mm per 300 mm	0.2	Chamfered	Very Hard	Rockwell C60	Case Hardened	84,000	140,000	00000000	000000

Metric—52100 Alloy Steel

40 mm Dia. (Tolerance: -0.025 mm to -0.009 mm)
Lg., mm	Lg. Tolerance, mm	Straightness Tolerance	Surface Smoothness	Edge Type	Hardness Rating	Hardness	Heat Treatment	Yield Strength, psi		Each
150	-0.5 to 0.5	0.050 mm per 300 mm	0.4 microns	Chamfered	Very Hard	Rockwell C60	Case Hardened	57,000	00000000	000000
200	-0.5 to 0.5	0.050 mm per 300 mm	0.4 microns	Chamfered	Very Hard	Rockwell C60	Case Hardened	57,000	00000000	00000
400	-0.5 to 0.5	0.050 mm per 300 mm	0.4 microns	Chamfered	Very Hard	Rockwell C60	Case Hardened	57,000	00000000	000000
500	-0.8 to 0.8	0.050 mm per 300 mm	0.4 microns	Chamfered	Very Hard	Rockwell C60	Case Hardened	57,000	00000000	000000
800	-0.8 to 0.8	0.050 mm per 300 mm	0.4 microns	Chamfered	Very Hard	Rockwell C60	Case Hardened	57,000	00000000	000000
1,200	-0.8 to 0.8	0.050 mm per 300 mm	0.4 microns	Chamfered	Very Hard	Rockwell C60	Case Hardened	57,000	00000000	000000

Metric—420 Stainless Steel

40 mm Dia. (Tolerance: -0.016 mm to 0 mm)
Lg., mm	Lg. Tolerance, mm	Straightness Tolerance	Surface Smoothness, microinch	Edge Type	Hardness Rating	Hardness	Heat Treatment	Yield Strength, psi		Each
500	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	0000000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,500	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000

Hollow Linear Motion Shafts

Shown with Bearing and Wiring (Not Included)

Lighter than solid shafts, hollow shafts reduce your total system weight and allow you to run various media such as electrical wiring, compressed air tubing, coolants, or lubricants through the center. 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. Interior is unfinished; exterior is turned, ground, and polished to tight diameter and straightness tolerances. All are chamfered to remove sharp edges and reduce damage to bearings, housings, and other components during installation.

1055 carbon steel shafts balance high strength and good machinability, making them ideal for general purpose use. They're easier to machine than 52100 alloy steel shafts.

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

Metric—1055 Carbon Steel
Lg.	Lg. Tolerance	Dia. Tolerance	ID Tolerance	Surface Smoothness, microinch	Hardness Rating	Hardness	Yield Strength, psi	Surface Yield Strength, psi		Each
40mm Dia. (27mm ID)
500mm	-0.8mm to 0.8mm	-0.025mm to 0mm	-1.35mm to 1.35mm	12	Very Hard	Rockwell C59	50,000	Not Rated	0000000	0000000
1,000mm	-0.8mm to 0.8mm	-0.025mm to 0mm	-1.35mm to 1.35mm	12	Very Hard	Rockwell C59	50,000	Not Rated	0000000	000000
1,500mm	-1.2mm to 1.2mm	-0.025mm to 0mm	-1.35mm to 1.35mm	12	Very Hard	Rockwell C59	50,000	Not Rated	0000000	000000

Rotary Shafts

Combine these general purpose drive shafts with gears, sprockets, and bearings to transmit rotary motion. All are precision ground to meet tight diameter and straightness tolerances.

Steel shafts are generally stronger than stainless steel shafts but not as corrosion resistant. 1566 carbon steel shafts balance high strength and good machinability, making them ideal for general purpose use. Stainless steel shafts are more corrosion resistant than steel shafts but also more difficult to machine. 303 and 440C stainless steel shafts have good corrosion resistance. Shafts with chamfered edges have their edges ground to reduce damage to bearings, housings, and other components during installation.

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

Metric—1566 Carbon Steel
Lg.	Lg. Tolerance	Straightness Tolerance	Edge Type	Hardness Rating	Hardness	Yield Strength, psi		Each
40mm Dia. (Tolerance: -0.01mm to 0mm)
200mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C60	84,000	0000000	000000
400mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C60	84,000	0000000	00000
500mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C60	84,000	0000000	00000
1,000mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C60	84,000	0000000	000000
1,200mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C60	84,000	0000000	000000
1,500mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C60	84,000	0000000	000000
2,000mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C60	84,000	0000000	000000
Metric—440C Stainless Steel
40mm Dia. (Tolerance: -0.01mm to 0mm)
200mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C50	65,000	0000000	00000
400mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C50	65,000	0000000	000000
500mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C50	65,000	0000000	000000
1,000mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C50	65,000	0000000	000000
1,200mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C50	65,000	0000000	000000
1,500mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C50	65,000	0000000	000000
2,000mm	1.588mm to 1.588mm	0.03 mm per 300 mm	Chamfered	Very Hard	Rockwell C50	65,000	0000000	000000

Keyed Rotary Shafts

Combine these shafts with a machine key (not included) to transmit torque to gears, sprockets, and other power transmission components. All have an ANSI standard keyway (keys not included; see our selection of key stock). Their 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.

Steel shafts are generally stronger than aluminum and stainless steel shafts but not as corrosion resistant. 1045 carbon steel shafts balance high strength and good machinability, making them ideal for general purpose use.

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

Fully Keyed

	Keyway
Lg.	Lg.	Wd.	Dp.	ANSI Keys Included	Edge Type	Yield Strength, psi		Each
Metric—1045 Carbon Steel (Rockwell B95)
40mm Dia.
300mm	300mm	12mm	5mm	No	Chamfered	75,000	00000000	000000
500mm	500mm	12mm	5mm	No	Chamfered	75,000	00000000	00000
1,000mm	1,000mm	12mm	5mm	No	Chamfered	75,000	00000000	000000
1,200mm	1,200mm	12mm	5mm	No	Chamfered	75,000	00000000	000000
1,500mm	1,500mm	12mm	5mm	No	Chamfered	75,000	00000000	000000
1,800mm	1,800mm	12mm	5mm	No	Chamfered	75,000	0000000	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.

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
40	-0.02 to 0	400	-0.05 to 0.05	400	16	Chamfered	57,500	000000000	0000000
40	-0.02 to 0	700	-0.08 to 0.08	700	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.
40mm	-0.076mm to 0.076mm	00000000	000000	0000000

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.

Flange Ball Nuts—Right-Hand Threaded

Alloy Steel
Thread Size	Lg., mm	Dia., mm	Wd., mm, mm	Ht., mm	Thick., mm	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Temperature Range, °F		Each
M20	40	40	60	46	10	1	5	Rockwell C58	1,300	0.1	5° to 175°	0000000	0000000