McMaster-Carr

A high-strength alternative to blind rivets, these Class 8.8 steel screws can be used when only one side of the material is accessible. When the screw is tightened, the attached nut expands the sleeve to create a strong clamping force on the back of the material.

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.

Other Hollow Bolts

Vented Flat Head Screws

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

Set Screws

Unlike screws that hold materials together with threads, set screws exert pressure at the tip to hold objects in place.

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Hex Head Screws

Vented Hex Head Screws

Tight-Spot Hex Head Screws

Vented Socket Head Screws

Vented Socket Head Screws

High-Vacuum Cleaned-and-BaggedVented Socket Head Screws

Other Hollow Bolts

Vented Flat Head Screws

Set Screws

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