M5 Nuts | McMaster-Carr

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Hex Nut Profile

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Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

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Metric Rounded Trapezoidal

Fastener Strength Grade/Class

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Specifications Met

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Fastener Strength Rating

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Compliant with Exemptions

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REACH

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Export Control Classification Number (ECCN)

1,054 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

53 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

29 products

Flange Nuts

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

21 products

Cap Nuts

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

7 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

18 products

Square Nuts

Flat sides won’t spin in channels and square holes

6 products

Coupling Nuts

Connect and extend threaded rods

13 products

Socket Nuts

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

2 products

Slotted Round Nuts

Fasten with a screwdriver in tight spots where there's no room for a wrench

1 product

Sealing Nuts

Prevent leaks and block out contaminants with a rubber seal

1 product

Tamper-Resistant Nuts

Hard to detach without special tools to prevent unwanted removal

1 product

Press-Fit Nuts

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

34 products

Rivet Nuts

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

45 products

Weld Nuts

Weld to metal surfaces to add permanent threads

22 products

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

5 products

Threaded Inserts

Create new threads or repair stripped threads

128 products

Snap-In Nuts

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

8 products

Adhesive-Mount Nuts

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

12 products

Thread Adapters

Join threads of a different type, size, and gender

306 products

Binding Barrels and Screws

Thread together for a low-profile fastener

9 products

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

175 products

Thumb Screws

Tighten and loosen by hand without the need for tools

14 products

Studs

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

21 products

Press-Fit Nut Installation Tools

Everything you need to install press-fit nuts by hand

Building and Machinery Hardware

T-Slotted Framing Fasteners

Secure brackets and other accessories to T-slotted rails

21 products

Fabricating and Machining

T-Slot Nuts

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

1 product

Setup Studs

Secure setup clamps and fixtures to your machine table or assemble heavy machines

3 products

Power Transmission

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

4 products