McMaster-Carr

With a deeper drive than flat and rounded head screws, socket head screws withstand more torque for a tighter hold. Install in a counterbored hole or above the surface.

Hex Head Screws

Hex head screws are easy to install with a wrench for a secure hold. Use them with a nut or in tapped holes.

Flat Head Screws

Flat and oval head screws are angled under the head to fit in countersunk holes.

Set Screws

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

Nuts

Threaded Rods

Thread-In Receptacles
for Quick-Release Pins

Use a screwdriver to install these receptacles in a threaded hole.

Threaded Inserts for Metal

Material Handling

Eyebolts—For Lifting

Also known as machinery eyebolts.

Hoist Rings—For Lifting

Designed for angular lifting, hoist rings resist stresses that would bend or break an eyebolt. They have a lifting ring that pivots 180° front to back to compensate for roll and sway when lifting heavy or unbalanced loads.

Lug Nuts

Use these lug nuts to secure a pneumatic wheel.

Power Transmission

Bearing Retaining Nuts

Often called shaft nuts, these nuts hold bearings, bushings, pulleys, and gears in place on your threaded shaft or spindle.

Metric Ball Screws and Nuts

Mounting Nuts for Shock Absorbers

Combine with mounting blocks to mount and secure threaded-body shock absorbers.

T-Slot Fasteners and Setup Studs

T-Slot Nuts

Designed to slide into T-slot tracks on machine tool tables, use these nuts to secure clamps and workpieces.

Drop-In T-Slot Nuts

Install from the top of the T-slot track and secure with a quarter turn. Also known as quarter-turn T-slot nuts.

Setup Studs

Combine these setup studs with T-slot nuts, flanged nuts, setup clamps, or setup blocks to clamp and hold workpieces, vises, and other objects onto your fixturing table. Also known as double-ended studs, they have threads on both ends.

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Fasteners

Socket Head Screws