3/8"-16 Lags | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Thread Size Thread Size	Show

3/8"-16

	Thread Size Thread Size	Hide

	Thread Type Thread Type

UNC

	Length Length

	Material Material

Stainless Steel

Steel

Zinc

	Finish Finish

Zinc Plated

Black Oxide

	Screw Size Screw Size

3/8"

	Minimum Thread Length Minimum Thread Length

1 3/8"

1 1/2"

2 1/2"

	Threading Threading

	Threaded on Both Ends

	For Use In For Use In

	Anchor Type Anchor Type

	Female Threaded

	Thread Fit Thread Fit

Class 1A

Class 2A

Class 2B

	Diameter Diameter

11/16"

3/4"

	Hardness Hardness

Not Rated

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

RoHS Compliant

	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

	Drill Bit Size Drill Bit Size

5/8"

11/16"

3/4"

	Minimum Installation Depth Minimum Installation Depth

1 3/4"

	Pull-Out Strength Pull-Out Strength

250 to 499 lbs.

500 to 999 lbs.

	Sleeve Material Sleeve Material

Zinc

Stainless Steel

	Drill Bit Decimal Size Equivalent Drill Bit Decimal Size Equivalent

0.625"

0.6875"

0.75"

	Shear Strength Shear Strength

500 to 749 lbs.

750 to 999 lbs.

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23 Products

About Threaded Studs and Rods

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
3/8"	1 1/2"	3/8"-16	1 1/2"	3"	Not Rated	Not Rated	5	000000000	00000
3/8"	2"	3/8"-16	1 1/2"	3 1/2"	Not Rated	Not Rated	5	000000000	00000
3/8"	2"	3/8"-16	2"	4"	Not Rated	Not Rated	5	000000000	00000
3/8"	3"	3/8"-16	1 3/8"	5"	Not Rated	Not Rated	5	000000000	00000
3/8"	3"	3/8"-16	1 1/2"	6"	Not Rated	Not Rated	5	000000000	00000
3/8"	3"	3/8"-16	2 1/2"	10"	Not Rated	Not Rated	1	000000000	0000
Zinc-Plated Steel
3/8"	1 1/2"	3/8"-16	1 1/2"	3"	Not Rated	Not Rated	25	000000000	00000
3/8"	2"	3/8"-16	1 1/2"	3 1/2"	Not Rated	Not Rated	10	000000000	0000
3/8"	2"	3/8"-16	2"	4"	Not Rated	Not Rated	10	000000000	00000
3/8"	3"	3/8"-16	1 3/8"	5"	Not Rated	Not Rated	10	000000000	00000
3/8"	3"	3/8"-16	1 1/2"	6"	Not Rated	Not Rated	10	000000000	00000
3/8"	3"	3/8"-16	2 1/2"	10"	Not Rated	Not Rated	1	000000000	0000
3/8"	3"	3/8"-16	2 1/2"	12"	Not Rated	Not Rated	1	000000000	0000

Stainless Steel Wood Screw Threaded Studs

18-8 stainless steel studs have good chemical resistance and may be mildly magnetic. 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.

(A)		(B)
Screw Size	Thread Lg.	Thread Size	Thread Lg.	Lg.	Tensile Strength	Hardness	Pkg. Qty.		Pkg.
18-8 Stainless Steel
3/8"	1 1/2"	3/8"-16	1 1/2"	3"	Not Rated	Not Rated	5	000000000	000000
3/8"	2"	3/8"-16	1 1/2"	3 1/2"	Not Rated	Not Rated	5	000000000	00000
3/8"	2"	3/8"-16	2"	4"	Not Rated	Not Rated	5	000000000	00000
3/8"	3"	3/8"-16	1 3/8"	5"	Not Rated	Not Rated	1	000000000	0000
3/8"	3"	3/8"-16	1 1/2"	6"	Not Rated	Not Rated	1	000000000	0000
3/8"	3"	3/8"-16	2 1/2"	8"	Not Rated	Not Rated	1	000000000	0000

Vibration-Resistant Female-Threaded Anchors for Block and Brick

Often referred to as four-way expansion anchors, these expand in four directions to resist loosening from vibration. To install, tap into a drilled hole with a hammer and position your fixture. 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.

					Strength, lbs.
Thread Size	Lg.	Drill Bit Size	Min. Installation Dp.	Dia.	Pull-Out	Shear	Tested In	For Use In	Pkg. Qty.		Pkg.
Zinc Alloy
3/8"-16	1 3/4"	11/16"	1 3/4"	11/16"	900	950	4,000 psi Concrete	Block, Brick, Concrete, Stone	10	000000000	000000

Female-Threaded Anchors for Block and Brick

Also known as double expansion anchors, these expand from both sides for full contact and a secure hold. To install, tap into a drilled hole with a hammer and position your fixture. Then, insert a screw or threaded rod and tighten. For maximum expansion, the anchor should protrude slightly above the surface before threading the screw. 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.

					Strength, lbs.
Thread Size	Lg.	Drill Bit Size	Min. Installation Dp.	Dia.	Pull-Out	Shear	Tested In	For Use In	Pkg. Qty.		Pkg.
Zinc Alloy
3/8"-16	2"	3/4"	1 3/4"	3/4"	500	750	4,000 psi Concrete	Block, Brick, Concrete	5	000000000	000000

Female-Threaded Expansion Anchors for Hollow Block and Brick

For narrow holes and small cavities where toggle anchors won't fit. To install, tap the anchor cone first into a drilled hole. 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.

					Strength, lbs.
Thread Size	Lg.	Drill Bit Size	Min. Installation Dp.	Sleeve Material	Pull-Out	Shear	Tested In	Specifications Met	For Use In	Pkg. Qty.		Pkg.
Steel
3/8"-16	1 5/16"	5/8"	1"	304 Stainless Steel	450	620	4,000 psi Concrete	__	Concrete, Hollow Block, Hollow Brick	1	000000000	00000
3/8"-16	1 5/16"	5/8"	1"	Zinc Alloy	500	620	4,000 psi Concrete	FM Approved, UL Listed	Concrete, Hollow Block, Hollow Brick	5	000000000	00000