1/4"-20 Bumpers | McMaster-Carr

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	Mount Type Mount Type

Threaded Stud and Threaded
Hole

	Shape Shape


Round	Tapered Round

Pointed	Stepped

	System of Measurement System of Measurement

Inch

Metric

	Height Height

	Thread Size Thread Size	Show

1/4"-20

	Thread Size Thread Size	Hide

	OD OD

	Color Color

	Black		Red
	Orange		Green

	Thread Length Thread Length

	Hardness Rating Hardness Rating

	Nonmarking Nonmarking

Yes

	Material Material

	For Use Outdoors For Use Outdoors

Yes

	Maximum Temperature Maximum Temperature

100° to 199° F

200° to 249° F

250° to 499° F

	Minimum Temperature Minimum Temperature

-99° to -50° F

-49° to 0° F

Greater than 0° F

	Stud Material Stud Material

Steel

Stainless Steel

	Maximum Load Maximum Load

Less than 1,000 lbs.

	Reinforcement Type Reinforcement Type

Base Plate

Core

	Number of Mounting Holes Number of Mounting Holes

	Base Plate Material Base Plate Material

Steel

Stainless Steel

	Thread Depth Thread Depth

	Diameter Diameter

	Core Material Core Material

Steel

	Overall Height Overall Height

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161 Products

Bumpers

Threaded-Stud Bumpers

Twist these bumpers into a threaded hole. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces.

Load-Rated Threaded-Stud Bumpers

Select these bumpers for applications that require specific load capacities. All are reinforced with a base plate for strength. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines and conveyors. Twist these bumpers into a threaded hole.

Heavy Duty Threaded-Stud Bumpers

All of these bumpers are reinforced with a steel core for strength. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines. Twist them into a threaded hole.

High-Temperature Load-Rated
Threaded-Stud Bumpers

These bumpers withstand temperatures up to 300° F, which is twice as high as our other load rated bumpers. Use them in applications that require specific load capacities. All are reinforced with a base plate for strength. Often used as feet, spacers, and vibration dampers, these bumpers absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines and conveyors. Twist them into a threaded hole.

Threaded Bumpers

Mount these bumpers on a threaded stud. All are reinforced with a steel core or base plate for strength. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines.

Load-Rated Threaded Bumpers

High-Temperature Load-Rated
Threaded Bumpers

These bumpers withstand temperatures up to 300° F, which is at least twice as high as our other load rated bumpers. Use them in applications that require specific load capacities. All are reinforced with a base plate for strength. Often used as feet, spacers, and vibration dampers, these bumpers absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines and conveyors. Mount them on a threaded stud.

Material Handling

Conveyor Guide Clamps

Clamps hold guide rails in place or join ends of a rail together.

Vibration-Damping U-Bolts

Reduce vibration and noise in your lines—a plastic cushion tightly grips pipe, tubing, and conduit to prevent movement. Nylon-insert locknuts grip the thread to resist loosening.

Rubber-Cushioned U-Bolts

A durable rubber cushion and mounting plate prevent corrosion and wear caused by metal-to-metal contact. The mounting plate is removable, so the U-bolts can be installed onto an existing line without needing to dissemble it.