McMaster-Carr

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.

Dia.	Dia. Tolerance	Yield Strength, psi	Hardness	Max. Hardness After Heat Treatment	Specifications Met		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.004" to 0"	54,000	Rockwell B70 (Medium)	Rockwell C60	ASTM A108	0000000	000000	0000000	0000000

Ultra-Machinable 12L14 Carbon Steel Rods

Yield Strength: 60,000 psi
Hardness: Rockwell B85 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated
Specifications Met: ASTM A108, ASTM A29

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.

Dia.	Dia. Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.004" to 0"	00000000	0000000	0000000	0000000

High-Strength 1045 Carbon Steel Rods and Discs

Stronger than low-carbon steel with equally good machinability, 1045 carbon steel is widely used for bolts, studs, and shafts.

Rods and Discs

Yield Strength:
Inch sizes: 77,000 psi
Metric sizes: 65,000 psi
Hardness:
Inch sizes: Rockwell B90 (Medium)
Metric sizes: Rockwell B80 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated
Specifications Met:
Inch sizes: ASTM A108
Metric sizes: ASTM A108, ASTM A29, ASTM A576

Dia.	Dia. Tolerance	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.006" to 0"	1/8"	0000000	000000	0000000	0000000

Multipurpose 4140 Alloy Steel Rods and Discs

Yield Strength: 60,000 psi
Hardness: Rockwell C10 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Not Rated
Specifications Met: ASTM A108, ASTM A29

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.

Dia.	Dia. Tolerance	Heat Treatment		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.005" to 0"	Annealed (Softened)	0000000	000000	0000000	0000000	0000000	0000000

Hardened Multipurpose 4140 Alloy Steel Rods

Yield Strength: 95,000 psi
Hardness: Rockwell C25 (Hard)
Specifications Met: ASTM A108, ASTM A193, ASTM A29

These rods 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.

Dia.	Dia. Tolerance	Heat Treatment	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.007" to 0.007"	Stress Relieved	3/16" per 10 ft.	0000000	000000	000000	0000000	0000000	0000000

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.

304/304L stainless steel contains less carbon than standard 304 for better weldability.

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.

304/304L Stainless Steel Rods

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

Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.003" to 0.003"	Cold Worked	1/8" per 5 ft.	00000000	000000	0000000	0000000	0000000	0000000

Multipurpose 304 Stainless Steel with Certification

All come with a traceable lot number and test report. 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.

304/304L stainless steel contains less carbon than standard 304 for better weldability.

304/304L Stainless Steel Rods

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

Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.003" to 0.003"	Cold Worked	1/8" per 5 ft.	00000000	000000	0000000	0000000	0000000	0000000

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 up to the maximum temperature.

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

Rods and Discs

Yield Strength: 25,000 psi
Hardness:
Inch Sizes: Rockwell B75 (Medium)
Metric Sizes: Rockwell B85 (Medium)
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met:
Inch Sizes: ASTM A582
Metric Sizes: ASTM A276, ASTM A564, ASTM A582

Inch
Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.063" to 0.188"	Cold Drawn	1/8" per 5 ft.	0000000	0000000	0000000	0000000	0000000	0000000

Easy-to-Machine 303 Stainless Steel with Certification

A traceable lot number and test report is furnished with each piece. 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

Yield Strength: 25,000 psi
Hardness: Rockwell B75 (Medium)
Heat Treatment: Annealed (Softened)
Heat Treatable: No
Specifications Met: ASTM A582

Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.063" to 0.188"	Cold Drawn	1/8" per 5 ft.	0000000	0000000	0000000	0000000	0000000	0000000

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.

316/316L stainless steel contains less carbon than standard 316 for better weldability.

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 and Discs

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

316/316L Stainless Steel
Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
Inch
3 1/8"	-0.063" to 0.063"	Cold Worked	1/8" per 5 ft.	00000000	0000000	0000000	0000000	0000000	0000000

Corrosion-Resistant 316 Stainless Steel with Certification

All come with a traceable lot number and test report. 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.

316/316L stainless steel contains less carbon than standard 316 for better weldability.

Rods

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

316/316L Stainless Steel
Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.063" to 0.063"	Cold Worked	1/8" per 5 ft.	0000000	0000000	0000000	0000000	0000000	0000000

High-Strength 17-4 PH Stainless Steel

With a higher chromium content than 15-5 PH stainless steel, this high-strength 17-4 PH offers better corrosion resistance. It is also known as 630 stainless steel. This material maintains its corrosion resistance in temperatures up to 1100° F.

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

Rods

Yield Strength: Not Rated
Hardness: Rockwell C30 (Hard)
Heat Treatment: Annealed (Softened)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C45
Specifications Met: ASTM A564, AMS 5643

Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance	Magnetic Properties		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.003" to 0.003"	Cold Drawn	1/16" per 5 ft.	Magnetic	00000000	0000000	0000000	0000000	0000000	000000000

High-Strength 17-4 PH Stainless Steel with Certification

All come with a traceable lot number and test report. With a higher chromium content than 15-5 PH stainless steel, this high-strength 17-4 PH offers better corrosion resistance. It is also known as 630 stainless steel. This material maintains its corrosion resistance in temperatures up to 1100° F.

Rods

Yield Strength: Not Rated
Hardness: Rockwell C30 (Hard)
Heat Treatment: Annealed (Softened)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C45
Specifications Met: ASTM A564, AMS 5643

Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance	Magnetic Properties		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.003" to 0.003"	Cold Worked	1/16" per 5 ft.	Magnetic	0000000	0000000	0000000	0000000	0000000	000000000

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.

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

Dia.	Dia. Tolerance	Fabrication	Temper	Heat Treatment	Temperature Range, °F		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.034" to 0.034"	Extruded	T6511	Hardened	-320° to 300°	0000000	000000	000000	0000000	0000000	0000000

Multipurpose 6061 Aluminum Rods with Certification

Yield Strength: 35,000 psi
Hardness: Brinell 95 (Soft)
Temper: See table
Fabrication: See table.
1/4" and 5/16" Dia.: 6 ft. lengths Extruded, other lengths Cold Worked.
Specifications Met: See table

These rods come with a traceable lot number and test report. 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.

Dia.	Dia. Tolerance	Fabrication	Temper	Heat Treatment	Temperature Range, °F	Specifications Met		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.034" to 0.034"	Extruded	T6511	Hardened	-320° to 300°	ASTM B221	0000000	000000	000000	0000000	0000000	0000000

High-Strength 2024 Aluminum Rods and Discs

Yield Strength: 45,000 psi
Hardness: Brinell 120 (Medium)
Temper:
3/16" to 3/8" dia.: T4
All other sizes: T351
Fabrication: Cold Drawn
Specifications Met: AMS 4120, AMS QQ-A-225/6, ASTM B211

While 2024 aluminum was initially designed for structural components in aircraft, it's now widely used when a high strength-to-weight ratio is needed, such as for gears, shafts, and fasteners. It offers similar performance to 7075 aluminum, but it’s not as strong.

Dia.	Dia. Tolerance	Heat Treatment	Temperature Range, °F		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3 1/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	000000	000000	0000000	0000000	0000000

Ultra-Machinable 360 Brass Rods and Discs

Yield Strength:
Inch sizes: 15,000 psi
Metric sizes: 23,000 psi
Hardness: See table
Temper:
Inch sizes: H02 (1/2 Hard)
Metric sizes: 1/2 Hard
Heat Treatable: No
Specifications Met:
Inch sizes: ASTM B16
Metric sizes: European Standard EN 12164

With the highest lead content of all the brass alloys, 360 offers the best machinability. Often called free-machining and free-cutting brass, it stands up to high-speed drilling, milling, and tapping operations with minimal wear on your tools. It’s commonly used for gears, pinions, and lock components.

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

Dia.	Dia. Tolerance Range	Hardness		1/2 ft. Lg.	1 ft. Lg.
3 1/8"	-0.006" to 0.006"	Rockwell B25 (Soft)	00000000	0000000	0000000

Ultra-Machinable 360 Brass Rods with Certification

Yield Strength: 15,000 psi
Hardness:
3/32" to 15/32" dia.: Not Rated
All other sizes: Rockwell B25 (Soft)
Temper: H02 (1/2 Hard)
Heat Treatable: No
Specifications Met: ASTM B16

These rods come with a traceable lot number and test report. With the highest lead content of all the brass alloys, 360 offers the best machinability. Often called free-machining and free-cutting brass, it stands up to high-speed drilling, milling, and tapping operations with minimal wear on your tools. It’s commonly used for gears, pinions, and lock components.

Dia.	Dia. Tolerance Range		1/2 ft. Lg.	1 ft. Lg.
3 1/8"	-0.006" to 0.006"	0000000	0000000	0000000

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About Stainless Steel

About Copper, Brass, and Bronze

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

About Aluminum

Low-Carbon Steel Rods and Discs

Ultra-Machinable 12L14 Carbon Steel Rods

High-Strength 1045 Carbon Steel Rods and Discs

Multipurpose 4140 Alloy Steel Rods and Discs

Hardened Multipurpose 4140 Alloy Steel Rods

Multipurpose 304 Stainless Steel

Multipurpose 304 Stainless Steel with Certification

Easy-to-Machine 303 Stainless Steel

Easy-to-Machine 303 Stainless Steel with Certification

Corrosion-Resistant 316 Stainless Steel

Corrosion-Resistant 316 Stainless Steel with Certification

High-Strength 17-4 PH Stainless Steel

High-Strength 17-4 PH Stainless Steel with Certification

Multipurpose 6061 Aluminum Rods and Discs

Multipurpose 6061 Aluminum Rods with Certification

High-Strength 2024 Aluminum Rods and Discs

Ultra-Machinable 360 Brass Rods and Discs

Ultra-Machinable 360 Brass Rods with Certification