Vacuum Bolts | McMaster-Carr

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Screw Features

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Unified Standard Class 2A

Unified Standard Class 3A

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Thread Direction

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Tensile Strength

30,000 psi to 99,999 psi

Not Rated

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DFARS Specialty Metals

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309 Products

Screws and Bolts

Vented Hex Head Screws

Drilled through the head and shaft, these screws vent fluid and gases trapped below the screw, making them good for vacuum applications.

Vented Socket Head Screws

Drilled through the head and shaft, these screws vent fluid and gases trapped below the screw, making them good for vacuum applications.

High-Vacuum Cleaned-and-Bagged
Vented Socket Head Screws

Fasten these screws inside a high-vacuum system without bringing in contaminants.

Vented Button Head Screws

These screws are drilled through the shaft to vent fluids and gases trapped under the screw. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.

Metric Vented Button Head Screws

To vent fluid and gas trapped under the screw, these metric screws are drilled through the shaft. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.

Vented Flat Head Screws

These screws are drilled through the shaft to vent fluids and gases trapped under the screw.

Metric Vented Flat Head Screws

To vent fluids and gases trapped under the screw, these metric screws are drilled through the shaft.

Vented Cup-Point Set Screws

These inch size set screws are vented to allow fluid and gas to pass through.

Metric Vented Cup-Point Set Screws

These metric set screws are vented to allow fluid and gas to pass through.