Iron Rounds | McMaster-Carr

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System of Measurement

Diameter

Belt Trade Size

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Shaft Type

Number of Grooves

V-Belt Type

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For Maximum Belt Width

REACH

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Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Shaft Mount Type

Width

Pulley Type

Fabrication

Keyway Width

Number of Teeth

Bushing Trade Number

1,294 Products

Raw Materials

Steel

Strong, machinable, and weldable—all with material certificates for traceability

105 products

Fastening and Joining

Cross-Bracing Washers

Connect cross-bracing rods or cables to structural beams; also known as hillside washers

20 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

12 products

Power Transmission

Timing Belt Pulleys

Pair with a timing belt to transfer motion from a rotating shaft

136 products

V-Belt Pulleys

Pair with a V-belt to transfer motion from a rotating shaft

427 products

Flat Belt Pulleys

Pair with a flat belt to transfer motion from a rotating shaft

10 products

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

58 products

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

92 products

Sleeve Bearings

With no moving parts, the plainest type of bearing

93 products

Flanged Sleeve Bearings

A sleeve and thrust bearing in one to support both parallel and perpendicular loads

17 products

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

37 products

Fabricating and Machining

Rotary Tables

Rotate your work 360° for easy access to different angles

6 products

Hole Punches

Punch holes in metal, plastic, and fabric

4 products

Facility and Grounds Maintenance

Floor Drains

Catch liquid from the floor and direct it down a drain pipe

6 products

Floor Drain Grates

Block solids from falling down drains while liquids flow freely

11 products

Manhole Covers

Made of cast iron to handle high-volume foot and vehicle traffic.

6 products

Manhole Riser Rings

Raise a manhole cover to make it level with the surface

4 products

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

10 products

Hand Wheels

Rotate to adjust machinery, valves, drill presses, and other equipment

72 products

Chain Wheels

Add a pull chain to operate overhead doors, hatches, and valves

31 products