Bolt Retainers | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Material Material

Steel

Stainless Steel

Plastic

	Finish Finish

Zinc Plated

Black Phosphate

Zinc Yellow-Chromate Plated

Black Oxide

Zinc-Chromate Plated

Cadmium Plated

Corrosion-Resistant-Coated

Green Phosphate

Nickel Plated

Silver Plated

	Nut Type Nut Type

	For OD For OD

	Retaining Ring Style Retaining Ring Style


Push On	Side Mount

Spiral

	For Screw Size For Screw Size

	Retaining Ring Type Retaining Ring Type

	External
	Internal

	Weld Nut Shape Weld Nut Shape

	Rectangular
	Round
	Hex
	Square
	Rectangular with Floating Nut

	Ring OD Ring OD

	Height Height

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	For Groove Diameter For Groove Diameter

	Thread Direction Thread Direction


Right Hand	Left Hand

	Container Type Container Type

Plastic Carrying Case

Roll

	Ring Thickness Ring Thickness

	Color Color

	Red		Green
	Blue		Off-White
	Purple		Black
	Yellow		Brown
	Silver		White
	Orange

	For Maximum Panel Thickness For Maximum Panel Thickness

	Barrel Profile Barrel Profile


Low	Standard

	Distance from Center of Hole to Edge (A) Distance from Center of Hole to Edge (A)

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1,199 Products

About Nuts, Materials, and Finishes

Round Push Nuts

With flexible teeth that slide smoothly over threads of any pitch, these push nuts can be used alone for light-duty applications or as a jam nut.

Metric Round Push Nuts

These metric push nuts can be used as a standalone for light-duty applications or as a jam nut.

Rectangular Push Nuts

Also known as flat-style speed nuts, these have large sides, so they're easy to push over threads by hand.

Rectangular Push Nuts for Tapping Screws

Flanged Push Nuts

A flange distributes the load over a large area and reduces stress where the nut meets the material surface.

Clip-On Nuts

Metric Clip-On Nuts for Flanged Edges

Slide these nuts on the edge of a panel and position them by hand. Also known as G-style clip-on nuts.

Clip-On Nuts for Flanged Edges

Also known as G-style clip on nuts, slide these nuts on the edge of a panel and position them by hand.

No-Slip Clip-On Nuts

A hex- or square-shaped barrel allows these clip-on nuts to be gripped with a wrench to hold them in place when tightening a screw. They have multiple threads for more thread engagement than low-profile clip-on nuts.

Low-Profile No-Slip Clip-On Nuts

Use these light-duty clip-on nuts in low-clearance applications.

No-Slip Clip-On Barrel Nuts

Also known as U-style clip on nuts, these nuts have a barrel with multiple threads for secure thread engagement.

Metric No-Slip Clip-On Barrel Nuts

These metric nuts have a barrel with multiple threads for secure thread engagement. Also known as U-style clip-on nuts.

No-Slip Clip-On Enclosed Hex Nuts

The S-style design provides more strength than other no-slip clip-on nuts.

Low-Profile Clip-On Nuts

Use these light-duty clip-on nuts in low-clearance applications.

Clip-On Hex Nuts

A hex-shaped barrel allows these clip-on nuts to be gripped with a wrench to hold them in place when tightening a screw. They have multiple threads for more thread engagement than low-profile clip-on nuts.

No-Slip Clip-On Nuts for Tapping Screws

These nuts firmly clip onto the edge of panels and stay secure.

Clip-On Nuts for Tapping Screws

These nuts are often used to secure parts on electric consoles.

Weld Nuts

Steel Hex Weld Nuts

Weld these nuts to flat and uneven uncoated steel surfaces for a strong permanent hold.

Metric Stainless Steel Hex Weld Nuts

You can weld these metric nuts to flat and uneven uncoated stainless steel surfaces for a strong permanent hold.

Stainless Steel Hex Weld Nuts

You can weld these nuts to flat and uneven uncoated stainless steel surfaces for a strong permanent hold.

Metric Steel Hex Weld Nuts

Weld these metric nuts to flat and uneven uncoated steel surfaces for a strong permanent hold.

Square Weld Nuts

Square weld nuts have more weld points than hex weld nuts for a stronger hold. Use them on flat surfaces.

Narrow-Base Weld Nuts

Low-Profile Narrow-Base Weld Nuts

A smooth base provides more contact with the mating surface than weld nuts with projections.

Low-Profile Narrow-Base Weld Nuts with Projections

Projections on the base concentrate the weld and provide room for heat to dissipate.

Steel Narrow-Base Weld Nuts

These nuts can be used in channels and tight spaces where round-base weld nuts won't fit.

Metric Steel Narrow-Base Weld Nuts

Use these metric nuts in channels and tight spaces where round-base weld nuts won't fit.

Stainless Steel Narrow-Base Weld Nuts

Weld these nuts to stainless steel surfaces.

Stainless Steel Offset-Barrel Narrow-Base Weld Nuts

Weld these nuts to stainless steel surfaces.

Steel Offset-Barrel Narrow-Base Weld Nuts

Weld these nuts to uncoated steel surfaces.

Round-Base Weld Nuts

Steel Round-Base Weld Nuts

A smooth base provides more contact with the mating surface than weld nuts with projections.

Metric Steel Round-Base Weld Nuts

A smooth base on these metric nuts provides more contact with the mating surface than weld nuts with projections

Stainless Steel Round-Base Weld Nuts

Weld these nuts to stainless steel surfaces.

Round-Base Weld Nuts with Projections

Projections on the base concentrate the weld and provide room for heat to dissipate.

Aligning Weld Nuts

Threads float inside the retainer so you can install a bolt at a slight angle to align with off center parts.

Metric Aligning Weld Nuts

Threads float inside the retainer of these metric nuts so you can install a bolt at a slight angle to align with off center parts.

Mil. Spec. Rivet-Mount Nuts

Create threads in hard-to-work areas—where you can’t reach the back of a workpiece, or material is too thin to be tapped.

Snap-In Nuts

Steel Snap-In Nuts

Snap these nuts into square holes in thin materials.

Plastic Snap-In Nuts

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

Stainless Steel Snap-In Nuts

Stainless steel snap-in nuts have excellent corrosion resistance in most environments.

Hex Speed Nuts

Hex speed nuts can be gripped with a wrench for ease of removal.

Tube-End Weld Nuts

About half the strength of medium-strength steel coupling nuts, these metric nuts are for light duty fastening applications.

Left-Hand Threaded Tube-End Weld Nuts

Use these tube-end weld nuts with left-hand threaded fasteners.

Retaining Rings

Push-On External Retaining Rings

No groove required—press these rings onto the end of a shaft for a firm grip.

Rectangular Push-On External Retaining Rings

Also known as flat-style speed nuts, these have a large surface to distribute loads better than standard and flanged external push rings.

Push-On Retaining Caps

Use these caps to hold components in place and protect shaft ends.

Flanged Push-On External Retaining Rings

The wide flange provides better load distribution than standard external push rings and can be used to cover oversized holes. Also known as thread cutting nuts.

Side-Mount External Retaining Rings

Also known as E-style rings.

Wide-Grip Side-Mount External Retaining Rings

Also known as poodle rings, these thick rings have "ears" that form a large retaining surface to withstand stronger forces than other side-mount retaining rings.

Single-Turn Spiral External Retaining Rings

Slide these rings into place with one twist—no tools required—for applications with high thrust loads.

Push-On Internal Retaining Rings

No groove required—these rings have teeth that firmly grip the bore.

Single-Turn Spiral Internal Retaining Rings

Slide these rings into place by hand with a single twist for applications with high thrust loads.

Wire-Lockable Retainers for Hex Head Screws and Nuts

Place one of these retainers around a hex head screw or nut, then attach wire to lock the screw or nut in place and keep it from loosening.

Side-Mount External Retaining Ring Assortments

Also known as E-Style and C-style rings, slide these into the groove from the side of the shaft. They provide a wider shoulder than other external retaining rings for a larger retaining surface.

Threadlockers

Prevent threaded fasteners from loosening due to shock and vibration.

Threadlockers for Plastic Fasteners

Specially formulated for plastics, these threadlockers secure nylon, PTFE, and other plastic threaded fasteners.

Lubricating Threadlockers

These low-friction threadlockers harden slowly, allowing ample time to smoothly adjust multiple large bolts for even clamping.

Adjustable Threadlockers

Use these threadlockers on fasteners that require occasional fine-tuning, such as set screws.

Threadlockers for Drinking Water

These threadlockers meet NSF/ANSI 61 for drinking water.

Quick-Set Threadlockers

These threadlockers develop usable strength within one hour. Because they harden quickly on most metals, they don't require a primer.

High-Temperature Threadlockers

Keep threaded fasteners from loosening at temperatures up to 450° F.

Heavy Duty Threadlockers

Withstand demanding, high-vibration applications such as motor and pump housings with these threadlockers.

Extreme-Temperature Threadlockers

Secure threaded fasteners at temperature extremes—from -300° F to 2100° F.

Threadlocker Paste

Paste threadlockers are easy to apply and won't drip, even from overhead fasteners.

High-Temperature Threadlocker Paste

This thick paste withstands temperatures up to 650 °F.

Threadlocker Gel

This gel clings to fasteners to prevent drips.

High-Temperature Wicking Threadlockers

These threadlockers withstand temperatures up to 450° F.

Threadlocker Tape

Wrap this no-mess tape around threaded fasteners up to 30 days before installation.

Adjustable Wicking Threadlockers

Use these threadlockers for threaded fasteners that require occasional fine-tuning, such as set screws.

Reusable Threadlockers

These threadlockers hold securely but stay flexible, so fasteners can be adjusted, removed, or reused.

Wicking Threadlockers

Apply these threadlockers on fasteners that are already installed—their thin consistency allows them to flow into small gaps.

Retaining Compounds

Retaining Compounds for Loose-Fitting Parts

Fill gaps up to 0.02" to secure worn unthreaded cylindrical metal parts such as shafts, bearings, and press-fit assemblies.

Retaining Compounds for Oily Loose-Fitting Parts

Even on oily surfaces, these retaining compounds keep their hold.

Retaining Compounds for Close-Fitting Parts

Fill gaps up to 0.01" to secure unthreaded cylindrical metal parts such as shafts, bearings, and press-fit assemblies.

Retaining Compounds for Oily Close-Fitting Parts

Even on oily surfaces, these retaining compounds keep their hold.

Adhesive Maintenance Kits

For routine maintenance and quick repairs, these kits include instant-bond adhesive, threadlocker, retaining compound, pipe thread sealant, gasket maker sealant, and primer.