8-32 Anchors | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Thread Size Thread Size	Show

8-32

	Thread Size Thread Size	Hide

	Screw Size Screw Size

No. 8

	Length Length

	Diameter Diameter

0.14"

0.164"

5/16"

	Anchor Type Anchor Type


Stud	Female Threaded

	Minimum Installation Depth Minimum Installation Depth

1/2"

	For Use In For Use In

Block

Brick

Concrete

	Material Material

Stainless Steel

Steel

Zinc

	Finish Finish

Black Oxide

Zinc Plated

	Thread Length Thread Length

	Drill Bit Size Drill Bit Size

5/16"

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Removable Removable

Permanent

	Thread Spacing Thread Spacing

Coarse

	Thread Fit Thread Fit

Class 1A

Class 2A

Class 2B

	Threading Threading

Partially Threaded

Threaded on Both Ends

	Thread Type Thread Type

UNC

	Eye Diameter Eye Diameter

1/8"

1/4"

	Head Height Head Height

3/8"

13/32"

	Head Type Head Type

	Eye

	Drill Bit Decimal Size Equivalent Drill Bit Decimal Size Equivalent

0.3125"

	Shear Strength Shear Strength

Less than 1,000 lbs.

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19 Products

About Hex Head Screws and Bolts

About Threaded Studs and Rods

Shallow-Hole Female-Threaded Anchors for Block and Brick

Also known as caulk-in anchors, these stay secure when there's not much material to hold. When installed, the cone expands the sleeve to hold it firmly inside the hole. To install, insert the anchor cone end first and use an installation tool to drive the sleeve over the cone. Then, insert a screw or threaded rod and tighten. Pull-out strength and shear strength values are 25% of the ultimate values.

For technical drawings and 3-D models, click on a part number.

Anchors

						Strength, lbs.
Thread Size	Lg.	Min. Installation Dp.	Drill Bit Size	Dia.	Sleeve Material	Pull-Out	Shear	Tested In	For Use In	Pkg. Qty.		Pkg.
Zinc Alloy
8-32	9/16"	1/2"	5/16"	5/16"	Lead	85	85	4,000 psi Concrete	Block, Brick, Concrete	25	000000000	000000

Installation Tools

Drive these tools with a hammer to expand anchors.

Zinc-Plated Steel
For Thread Size	Lg.		Each
8-32	2 15/16"	000000000	00000

Installation Tools for Shallow-Hole Female-Threaded Anchors

Drive these tools with a hammer to expand anchors.

Zinc-Plated Steel
For Thread Size	Lg.		Each
8-32	2 15/16"	000000000	00000

Machine Screw-Style Hangers

Also known as spade bolts, 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). Zinc plating provides corrosion resistance in wet environments. Material meets ASTM A307 or F2282 specifications for quality.

For technical drawings and 3-D models, click on a part number.

						Head
Thread Size	Lg.	Threading	Thread Lg.	Thread Spacing	Eye Dia.	Wd.	Thick.	Ht.	Specifications Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel
8-32	15/16"	Partially Threaded	7/16"	Coarse	1/8"	1/4"	1/16"	13/32"	ASTM F2282	10	000000000	000000
8-32	1 7/16"	Partially Threaded	1"	Coarse	1/8"	1/4"	1/16"	3/8"	ASTM F2282	10	000000000	00000

Steel Wood Screw Threaded Studs

These studs are also known as hanger bolts—use them to hang, mount, and fasten parts to wood structures. Install with a stud driver or create wrench flats by threading two nuts onto the stud and jamming them together.

Black-oxide steel studs are mildly corrosion resistant in dry environments.

Zinc-plated steel studs resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

(A)		(B)
Screw Size	Thread Lg.	Thread Size	Thread Lg.	Lg.	Tensile Strength	Hardness	Pkg. Qty.		Pkg.
Black-Oxide Steel
No. 8	7/8"	8-32	5/8"	1 1/2"	Not Rated	Not Rated	50	000000000	000000
No. 8	1"	8-32	3/4"	1 3/4"	Not Rated	Not Rated	25	000000000	0000
No. 8	1"	8-32	1"	2"	Not Rated	Not Rated	25	000000000	0000
Zinc-Plated Steel
No. 8	7/8"	8-32	5/8"	1 1/2"	Not Rated	Not Rated	100	000000000	0000
No. 8	1"	8-32	3/4"	1 3/4"	Not Rated	Not Rated	100	000000000	0000
No. 8	1"	8-32	1"	2"	Not Rated	Not Rated	100	000000000	0000

Routing Eyebolts with Nuts—Not for Lifting

Bent-Closed Eye

Also known as nut eyebolts, these are designed for through-hole applications. Use them for routing wire and for other light duty applications.

Zinc-plated steel eyebolts offer good corrosion resistance.

Black-oxide steel eyebolts are more corrosion resistant than zinc-plated steel.

304 stainless steel eyebolts are more corrosion resistant than black-oxide steel.

316 stainless steel are the most corrosion resistant eyebolts.

For technical drawings and 3-D models, click on a part number.

Zinc-Plated Steel

Thread					Nuts
Size	Lg.	Shank Lg.	Overall Lg.	Eye Dia.	No. Included	Style	Pkg. Qty.		Pkg.
Bent-Closed Eye
8-32	1"	1 1/8"	1 5/8"	1/4"	1	Hex	10	0000000	00000

Black-Oxide Steel

Thread					Nuts
Size	Lg.	Shank Lg.	Overall Lg.	Eye Dia.	No. Included	Style	Pkg. Qty.		Pkg.
Bent-Closed Eye
8-32	1"	1 1/8"	1 5/8"	1/4"	1	Hex	10	00000000	00000

304 Stainless Steel

Thread					Nuts
Size	Lg.	Shank Lg.	Overall Lg.	Eye Dia.	No. Included	Style	Pkg. Qty.		Pkg.
Bent-Closed Eye
8-32	1"	1 1/8"	1 5/8"	1/4"	1	Hex	5	0000000	00000

316 Stainless Steel

Thread					Nuts
Size	Lg.	Shank Lg.	Overall Lg.	Eye Dia.	No. Included	Style		Each
Bent-Closed Eye
8-32	1"	1 1/8"	1 3/4"	1/4"	1	Hex	00000000	00000

Screw-In Hooks

Threads on one end make it easy to screw these hooks directly into a wall.

Insert Styles L and M through a mounting hole and secure with the included fasteners. Style L have one hex nut to secure them from the back, and Style M come with two washers and two hex nuts to secure them from the front and back.

For technical drawings and 3-D models, click on a part number.

Wall, Under Mount
Style	Dia.	Projection	O'all Ht.	Thread Size	Thread Lg.	Cap., lbs.	Material	Appearance	Includes	Pkg. Qty.		Pkg.
L	0.14"	5/8"	5/8"	8-32	1"	Not Rated	Zinc-Plated Steel	Dull	One Hex Nut	10	0000000	00000

Extension Spring Stud Anchors

A black-oxide finish provides these steel anchors with mild corrosion resistance. Attach an extension spring to a stud and then thread the stud into your part for a secure connection.

For technical drawings and 3-D models, click on a part number.

Inch

Thread
Size	Min. Lg.	Lg.	Dia.	Hole Dia.	Material		Each
8-32	5/8"	7/8"	0.164"	0.1"	Black-Oxide Steel	0000000	00000

Corrosion-Resistant Extension Spring Stud Anchors

These stainless steel anchor studs offer excellent corrosion resistance. Attach an extension spring to a stud and then thread the stud into your part for a secure connection.

For technical drawings and 3-D models, click on a part number.

Inch

Thread
Size	Min. Lg.	Lg.	Dia.	Hole Dia.	Material		Each
8-32	5/8"	7/8"	0.164"	0.1"	18-8 Stainless Steel	000000000	00000

Corrosion-Resistant Swiveling Extension Spring Stud Anchors

These stainless steel anchor studs offer excellent corrosion resistance. The head swivels 360° so the spring stays straight and properly coiled. Attach an extension spring to a stud and then thread the stud into your part for a secure connection. To make tightening easier, anchors have a hex socket on the bottom and wrench flats at the top of the threads.

For technical drawings and 3-D models, click on a part number.

Inch

Thread
Size	Min. Lg.	Lg.	Dia.	Hole Dia.	Hex Size	Material		Each
8-32	5/8"	7/8"	0.164"	0.1"	0.05"	18-8 Stainless Steel	000000000	000000

Swiveling Extension Spring Stud Anchors

A black-oxide finish provides these steel anchors with mild corrosion resistance. The head swivels 360° so the spring stays straight and properly coiled. Attach an extension spring to a stud and then thread the stud into your part for a secure connection. To make tightening easier, anchors have a hex socket on the bottom and wrench flats at the top of the threads.

For technical drawings and 3-D models, click on a part number.

Inch

Thread
Size	Min. Lg.	Lg.	Dia.	Hole Dia.	Hex Size	Material		Each
8-32	5/8"	7/8"	0.164"	0.1"	0.05"	Black-Oxide Steel	000000000	000000