5/16"-18 Inserts | McMaster-Carr

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System of Measurement

Threaded Insert Type

Material

Stainless Steel

For Tap Thread Size

For Use In

Installed Length

0.25" to 0.499"

10 mm to 19.9 mm

End Type

Thread Type

For Tap Type

Key-Locking Insert Wall Style

Drill Bit Size

Thread Insert Style

Military Specification

MIL-DTL-45932/1

For Material Thickness

0.000" to 0.197"

0.015" to 0.156"

0.020" to 0.150"

0.020" to 0.280"

0.02" to 0.165"

0.027" to 0.15"

0.030" to 0.105"

0.030" to 0.125"

0.031" to 0.157"

0.060" to 0.138"

0.079" to 0.157"

0.105" to 0.175"

0.125" to 0.200"

Nut Type

Thread Pitch

Thread Direction

Thread Spacing

Body Length

Drive Style

Number of Locking Keys

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

How can we improve?

1,111 Products

Fastening and Joining

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

Screw-Mount Nuts

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

Weld Nuts

Weld to metal surfaces to add permanent threads

Tube-Connecting Nuts

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

Adhesive-Mount Nuts

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

Dowel Nuts

Form joints in blind holes in wood

Studs

Press, weld, or screw in place to add a threaded fastening point

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Single-End Studs

Single-End Studs

Use the unthreaded end as a pivot point, hinge, shaft, or locator pin

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Threaded Insert Installation Tools

Threaded Insert Installation Tools

Install helical, key-locking, slotted-drive, and other threaded inserts

Threaded Insert Removal Tools

Threaded Insert Removal Tools

Turn counterclockwise to extract helical inserts

Rivet Nut Tools

Rivet Nut Tools

Install rivet nuts

Anchor Installation Tools

Anchor Installation Tools

Drive with a hammer to expand and secure anchors in place

Fabricating and Machining

Taps

Cut internal threads for fasteners, pipe, conduit, and more

T-Slot Nuts

Combine with setup studs or bolts to mount fixtures to machine tables

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

Building and Machinery Hardware

Leveling Mount Inserts

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

Leveling Mounts

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

Vibration-Damping Mounts

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

Protective Feet

Protective Feet

Add to furniture and light equipment to protect floors from scratches and wear

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

Material Handling

Caster Sockets

Mount on the inside corners of channel and other framing to attach stem casters

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)