McMaster-Carr

Slip these inserts into tubular legs to quickly add threads for attaching leveling mounts. They’re often used in the legs of light equipment and furniture.

Leveling Mounts for Tubular Legs

Insert these adjustable mounts into tube ends to level your equipment in a single step.

Plastic Snap-In Nuts

These nylon nuts are chemical resistant, nonconductive, and lightweight.

Carbide Inserts

These premium inserts are made of superior carbide grades for longer life and a smoother finish.

Economy Carbide Inserts

Install these carbide inserts into a matching holder. When a cutting edge becomes dull, rotate the insert in the holder to use a sharp edge.

Screwdriver Bits and Adapters

Square Bits

Strong and durable, these multipurpose bits are for use with bit screwdrivers. They're designed for screws with a square recess in the head and are also known as Robertson bits.

Square Bits for Impact Drivers

The toughest bits available, these withstand the shock and twisting force of impact drivers. Designed for screws with a square recess in the head, they are also known as Robertson bits.

Reversible Square Bits

Bits have a different size at each end.

Square Bits for Stainless Steel Screws

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk.

Depth-Limiting Square Bits

An exterior stop collar prevents fasteners from being driven too deep. Use with soft materials such as drywall, wood, and fiberboard.

Square Phillips Bits

While screws with a square/Phillips combination drive can be turned with either a square or Phillips bit, these make the best contact so you can apply high torque without slipping and stripping the recess. They are also known as Quadrex bits.

Square Bit Sets

Also known as Robertson bits these are designed for screws with a square recess in the head.

Bit Assortments

Assortments contain bits with multiple drive styles.

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Building and Machinery Hardware

Snap-In Square Plugs

Push-In Square Plugs

High-Capacity Leveling MountInserts for Tubular Legs

Metric High-Capacity LevelingMount Inserts for Tubular Legs

Leveling Mount Insertsfor Tubular Legs

Leveling Mounts for Tubular Legs

Plastic Snap-In Nuts

Plastic Snap-In Nuts

Carbide Inserts

Carbide Inserts

Economy Carbide Inserts

Screwdriver Bits and Adapters

Square Bits

Square Bits for Impact Drivers

Reversible Square Bits

Square Bits for Stainless Steel Screws

Depth-Limiting Square Bits

Square Phillips Bits

Square Bit Sets

Bit Assortments

High-Capacity Leveling Mount
Inserts for Tubular Legs

Metric High-Capacity Leveling
Mount Inserts for Tubular Legs

Leveling Mount Inserts
for Tubular Legs