9/16"-12 Nuts | McMaster-Carr

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	System of Measurement System of Measurement

	Thread Size Thread Size	Show

	Thread Size Thread Size	Hide

	Nut Type Nut Type


Cap	Coupling

Flange	Hex

Locknut

	Material Material

Stainless Steel

	Finish Finish

Black Ultra-Corrosion-
Resistant Coated

Cadmium Yellow-Chromate
Plated

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Zinc-Aluminum Coated

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Grade 2	Grade 2H

Grade 5	Grade 8

Grade C

	Hex Nut Profile Hex Nut Profile


Standard	Thin

Extra Wide

	Width Width

	Thread Spacing Thread Spacing

	Thread Direction Thread Direction


Right Hand	Left Hand

	Locking Type Locking Type


Nylon Insert	Serrations

Distorted Thread	Cotter Pin

	Height Height

	Length Length

	Thread Type Thread Type

	Thread Fit Thread Fit

	Drive Style Drive Style


External Hex	External 12- Point

	Specifications Met Specifications Met

ASTM

Fed. Spec.

Mil. Spec.

	Insert Maximum Temperature Insert Maximum Temperature

	Flange Diameter Flange Diameter

	Flange Thickness Flange Thickness

	Distorted Thread Type Distorted Thread Type


Top Lock	Center Lock

	Coupling Nut Profile Coupling Nut Profile

	Threading Threading

	Fully Threaded
	Partially Threaded

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67 Products

Hex Nuts

Hex Nuts

Hex Nuts

Use these standard hex nuts for general purpose fastening.

Thin Hex Nuts

Thin Hex Nuts

Also known as jam nuts, these are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place.

Extra-Wide Hex Nuts

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Often referred to as heavy hex nuts, these are about 10% wider and taller than standard hex nuts. They distribute the load over a large area.

Locknuts

Nylon-Insert Locknuts

Nylon-Insert Locknuts

These locknuts have a nylon insert that grips threads to resist loosening.

Distorted-Thread Locknuts

Distorted-Thread Locknuts

An irregularly shaped thread grips the bolt for a stronger hold than nylon-insert locknuts.

Locknuts for use with Cotter Pins

Locknuts for use with Cotter Pins

Also known as castle nuts, secure these nuts by inserting a cotter pin or safety wire through the slots in the nut and a drilled hole in your bolt for light duty locking applications.

Other Nuts

Flange Nuts

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The flange distributes pressure where the nut meets the material surface, eliminating the need for a separate washer.

Cap Nuts

Cap Nuts

Cover and protect threads while providing a finished appearance.

Coupling Nuts

Also known as extension nuts, use these to connect and extend threaded rods. They’re about three times taller than standard hex nuts.

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