Screw Mounts | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

	Nut Type Nut Type


Flange	Screw Mount

Weld	Adhesive Mount

Hex	Square

Rivet Mount	Tube End

	Material Material

	Weld Nut Shape Weld Nut Shape

	Rectangular
	Hex
	Round
	Square
	Rectangular with Floating Nut

	Barrel Height Barrel Height

	Thread Direction Thread Direction


Right Hand	Left Hand

	Barrel Profile Barrel Profile


Low	Standard

	Length Length

	Base Diameter Base Diameter

	Thread Spacing Thread Spacing

Coarse

Fine

	Barrel Diameter Barrel Diameter

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Thread Fit Thread Fit

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

REACH Compliant

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Thread Length Thread Length

	Anchor Type Anchor Type

	Base Thickness Base Thickness

	Height Height

	Mount Type Mount Type

	For Use In For Use In

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831 Products

About Nuts, Materials, and Finishes

Screw-Mount Nuts

These nuts have three mounting holes to accept screws and rivets for use with thin materials.

Screw-Mount Nuts for Wood

These screw-mount nuts are often used to attach glides and levels to wood.

Steel Hex Weld Nuts

Weld these nuts to flat and uneven uncoated 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.

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.

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.

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.

Square Weld Nuts

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

Low-Profile Narrow-Base Weld Nuts with Projections

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

Low-Profile Narrow-Base Weld Nuts

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

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.

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.

Aligning Weld Nuts

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

Stainless Steel Adhesive-Mount Nuts

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

Steel Adhesive-Mount Nuts

These adhesive-mount nuts have a zinc plating for corrosion resistance in wet environments.

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.

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.

Spacers and Standoffs

Adhesive-Back Self-Tapping Supports

In enclosures and other places where you don’t want to drill a hole, mount circuit boards and other thin panels with these supports.

Snap-In Supports with Female Connection

Secure the self-tapping female connection with a screw; the other end snaps snugly into a panel, yet can be released for repairs and upgrades.

Snap-In Supports with Male Threaded Connection

Thread the male connection into a tapped hole and snap the other end into a panel for a secure hold that can be released for repairs and upgrades.

Screws and Bolts

Eye Nut-Style Hangers

These hangers have internal threads for use with threaded rods, bolts, and anchors.

Wedge Anchor-Style Hangers

Wedge these hangers in concrete and other solid materials.

Machine Screw-Style Hangers

You can use these versatile hangers in a threaded hole (as you would a screw), or secure them with a nut (as you would a bolt).

Toggle Bolt-Style Hangers

These hangers are a popular choice for overhead applications.

Toggle Bolt-Style Hangers with Spring

The spring holds the washer and toggle against opposite sides of the wall, so everything's in position before you begin tightening. Once tightened, the spring adds vibration resistance.