M18 Fasteners | McMaster-Carr

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Phosphate Coated

Zinc Yellow-Chromate Plated

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255 Products

Power Transmission

Bearing Locknuts

Bearing Locknuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

Bearing Nuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

Fastening and Joining

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

Hex Nuts

Handle most general fastening needs

Panel Nuts

Extremely thin for tight spots such as electrical panels; also known as dress nuts

Locknuts

Hold fasteners in place to prevent loosening from vibration

Socket Nuts

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

Coupling Nuts

Connect and extend threaded rods

Easy to tighten and loosen by hand for making frequent adjustments

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Flange Nuts

The flange distributes pressure, so you don't need a washer

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Fabricating and Machining

T-Slot Nuts

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

Material Handling

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

Building and Machinery Hardware

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

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