Hidden Screw Kits | McMaster-Carr

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146 Products

Fastener Assortments

Socket Head Screw Assortments

Phillips Rounded Head Screw Assortments

These assortments include pan head screws.

Hex-Drive Rounded Head Screw Assortments

These assortments include button head screws.

Tapping Screw Assortments for Sheet Metal

Fasten sheet metal up to 0.200" thick.

Screw Assortments for Wood

Drilling Screw Assortments for Metal

Drilling screws save you time and effort by drilling their own holes and fastening metal up to 0.500" thick in a single operation.

Tapping Screw Assortments
for Concrete, Block, and Brick

Also known as Tapcons, these screws are often used to anchor parts to concrete, block, and brick. Assortments include a drill bit.

Hex Head Screw Assortments

These assortments include hex head screws and hex nuts.

Flat Head Screw Assortments

Flat head screws are angled under the head to fit flush within countersunk holes.

Set Screw Assortments

Set screws exert pressure at the tip to hold objects in place.

Shoulder Screw Assortments

Shoulder screws have a cylindrical shoulder under the head that allows parts to rotate around or slide along its length. They have a standard shoulder with an undersized tolerance to fit most machinery and equipment.

Fastener Maintenance Assortments

Toggle Bolt Anchor Assortments for
Drywall, Plaster, and Wood Paneling

A wing-like toggle holds against the back of the material and spreads the force over a large area to hold 30 lbs. or more.

Removable-Screw Anchor Assortments
for Drywall, Plaster, and Wood Paneling

Use these light duty anchors to hold 20 lbs. or less.

Threaded Rod Assortments

Screw Nail Assortments

Stainless Steel Hex Screw and Nut Kits for Pipe Flanges

Stainless Steel Hex Screw
and Nut Kits for Pipe Flanges

Use these kits to connect standard-size stainless steel pipe flanges for ANSI Class 150 or 300.

Outlet Boxes and Enclosures

Fastener Kits for Enclosures

Mount components to your enclosure without worrying about leaks—these kits seal out water from washdowns, rain, and snow when used with enclosures rated NEMA 4X.

Pole-Mounting Kits for Enclosures

These kits come with everything you need to mount enclosures to round poles or beams. They clamp on to a range of pole diameters to hold enclosures securely in place.