3 1/4" Shafts | McMaster-Carr

Made with more carbon and manganese than other easy-to-machine carbon steels, 1144 carbon steel has a higher yield strength and hardness. Also known as Stressproof, these rods are stress-relieved to minimize warping during machining.

Ultra-Machinable 12L14 Carbon Steel Rods

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.

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.

Hardened Multipurpose 4140 Alloy Steel Rods

These rods are hardened for increased abrasion and impact resistance. Also known as chrome-moly steel, 4140 alloy steel resists fracturing from repeated stress.

Multipurpose 4140 Alloy Steel Rods and Discs

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.

High-Strength 4340 Alloy Steel Rods

Use for power transmission and structural applications that involve extreme impact, heat, and wear.

Oversized Easy-to-Machine
Gray Cast Iron Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Impact-Resistant Ductile Cast Iron Rods and Discs

Ductile cast iron is strong, resilient, and able to handle repeated stress without breaking.

Easy-to-Machine Impact-Resistant
Ductile Cast Iron Rods

With a high amount of ferrite, these cast iron rods are easier to machine without cracking than other impact-resistant ductile cast iron rods. Use them to create bushings, gears, pulleys, and pistons.

Tool Steel

Oversized Multipurpose Oil-Hardening
O1 Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Oversized Multipurpose Air-Hardening
A2 Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Oversized Wear-Resistant D2
Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Oversized High-Temperature H13 Tool Steel Rods

An oversized diameter on these rods allows for finishing to your exact requirements.

Oversized Shock-Resistant
S7 Tool Steel Rods and Discs

An oversized diameter allows for finishing to your exact requirements.

Stainless Steel

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.

Easy-to-Machine 303 Stainless Steel

Widely used for fabricating fittings and fasteners, 303 stainless steel machines quickly without sticking to cutting tools.

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.

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.

Easy-to-Machine 416 Stainless Steel

One of the most machinable types of stainless steel available, 416 contains sulfur for fast machining without clogging cutting tools. It's used for gears, screws, and shafts.

Bearing-Quality 440C Stainless Steel

One of the hardest types of stainless steel after heat treating, 440C offers excellent wear and abrasion resistance. It's often used for bearings, valves, and knife blades.

Wear-Resistant 410 Stainless Steel

Often used for fasteners and valves, 410 stainless steel withstands wear caused by abrasion.

Aluminum

Multipurpose 6061 Aluminum 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.

High-Strength 7075 Aluminum Rods and Discs

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.

High-Strength 2024 Aluminum Rods and Discs

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.

Copper, Brass, and Bronze

Ultra-Machinable 360 Brass Rods and Discs

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.

Oversized 932 Bearing Bronze Rods

Diameter is oversized to allow for finishing.

Plastic

Wear-Resistant Easy-to-Machine
Delrin® Acetal Resin Rods and Discs

Delrin® acetal resin, also known as acetal homopolymer, is stronger and stiffer than acetal copolymer.

Slippery UHMW Polyethylene Rods and Discs

In addition to a low-friction surface that prevents sticking and binding, this tough material is impact and wear resistant to handle the scuffs, scrapes, and strikes that other plastics can’t.

Antistatic Slippery UHMW Polyethylene Rods

This material suppresses static charges to prevent dust from building up.

Oil-Filled Slippery UHMW Polyethylene Rods

This oil-filled material is self-lubricating for an extra-slippery surface.

Chemical-Resistant PVC Rods and Discs

Because PVC resists many acids and alkalies, it’s widely used for tanks and in chemical-processing applications. Also known as PVC Type 1.

Impact- and Chemical-Resistant PVC Rods

Offering greater impact resistance than standard PVC Type 1 with similar chemical resistance, this PVC Type 2 is widely used for parts that are subject to shock.

High-Temperature CPVC Rods

CPVC is just as chemical resistant as standard PVC Type 1 and can handle hotter temperatures up to 200° F.

Chemical-Resistant Slippery PTFE Rods and Discs

Known for its naturally slippery surface, PTFE surpasses most plastics when it comes to chemical resistance and performance in extreme temperatures.

Durable Glass-Filled
Chemical-Resistant Slippery PTFE Rods

This glass-filled PTFE is more rigid than standard PTFE for increased durability in high-stress applications.

Steel

Low-Carbon Steel Rods and Discs

High-Strength Easy-to-Machine1144 Carbon Steel Rods

Ultra-Machinable 12L14 Carbon Steel Rods

High-Strength 1045 Carbon Steel Rods and Discs

Hardened Multipurpose 4140 Alloy Steel Rods

Multipurpose 4140 Alloy Steel Rods and Discs

High-Strength 4340 Alloy Steel Rods

Oversized Easy-to-MachineGray Cast Iron Rods and Discs

Impact-Resistant Ductile Cast Iron Rods and Discs

Easy-to-Machine Impact-ResistantDuctile Cast Iron Rods

Tool Steel

Oversized Multipurpose Oil-HardeningO1 Tool Steel Rods and Discs

Oversized Multipurpose Air-HardeningA2 Tool Steel Rods and Discs

Oversized Wear-Resistant D2Tool Steel Rods and Discs

Oversized High-Temperature H13 Tool Steel Rods

Oversized Shock-ResistantS7 Tool Steel Rods and Discs

Stainless Steel

Multipurpose 304 Stainless Steel

Easy-to-Machine 303 Stainless Steel

High-Strength 17-4 PH Stainless Steel

Corrosion-Resistant 316 Stainless Steel

Easy-to-Machine 416 Stainless Steel

Bearing-Quality 440C Stainless Steel

Wear-Resistant 410 Stainless Steel

Aluminum

Multipurpose 6061 Aluminum Rods and Discs

High-Strength 7075 Aluminum Rods and Discs

High-Strength 2024 Aluminum Rods and Discs

Copper, Brass, and Bronze

Ultra-Machinable 360 Brass Rods and Discs

Oversized 932 Bearing Bronze Rods

Plastic

Wear-Resistant Easy-to-MachineDelrin® Acetal Resin Rods and Discs

Slippery UHMW Polyethylene Rods and Discs

Antistatic Slippery UHMW Polyethylene Rods

Oil-Filled Slippery UHMW Polyethylene Rods

Chemical-Resistant PVC Rods and Discs

Impact- and Chemical-Resistant PVC Rods

High-Temperature CPVC Rods

Chemical-Resistant Slippery PTFE Rods and Discs

Durable Glass-FilledChemical-Resistant Slippery PTFE Rods

High-Strength Easy-to-Machine
1144 Carbon Steel Rods

Oversized Easy-to-Machine
Gray Cast Iron Rods and Discs

Easy-to-Machine Impact-Resistant
Ductile Cast Iron Rods

Oversized Multipurpose Oil-Hardening
O1 Tool Steel Rods and Discs

Oversized Multipurpose Air-Hardening
A2 Tool Steel Rods and Discs

Oversized Wear-Resistant D2
Tool Steel Rods and Discs

Oversized Shock-Resistant
S7 Tool Steel Rods and Discs

Wear-Resistant Easy-to-Machine
Delrin® Acetal Resin Rods and Discs

Durable Glass-Filled
Chemical-Resistant Slippery PTFE Rods