Top Hats | McMaster-Carr

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System of Measurement

Shaft Diameter

Length

Material

Flange OD

Plain Bearing Type

For Housing ID

Screw Size

Performance

Electrically Insulating

Flange Thickness

Shaft Mount Type

Lubrication

Drill Bit Size

Color

Thickness

Maximum Temperature

Sleeve OD

Sleeve Height

For Load Direction

Combined Radial and Thrust

Radial

RoHS

Compliant

Compliant with Exemptions

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Export Control Classification Number (ECCN)

3,790 Products

Fastening and Joining

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

180 products

Washers

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

11 products

Power Transmission

Flanged Sleeve Bearings

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

1,952 products

Mounted Bearings

Ball, roller, and sleeve bearings ready to bolt in place

16 products

Sleeve Bearings

With no moving parts, the plainest type of bearing

46 products

Pulley and Sprocket Bushings

Mount between a rotating shaft and equipment to secure the shaft and reduce vibration

20 products

Shaft Collar Adapters

Sized specifically to adapt standard shaft collars to pipe, creating a tight fit

6 products

Building and Machinery Hardware

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

81 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

150 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

51 products

Fabricating and Machining

Drill Bushings

Fit in holes to guide drill bits and other cutting tools for precise and repeatable holes and cuts

1,113 products

Drill Bushing Sleeves

Press into your jig fixture so you can swap different bushings in and out without causing wear

15 products

Heating, Ventilation, and Air Conditioning

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

15 products

Duct Vent Caps

Reduce downdrafts and prevent obstructions from entering vents

20 products

Electrical Power, Networking, and Controlling

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

3 products