Lag Studs | McMaster-Carr

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Black Oxide

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Zinc Yellow-Chromate Plated

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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EAR99

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Metric Class 6g

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Unified Standard Class 2A

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106 Products

Thread-Mount Studs for Wood

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

Black-Oxide Steel—Typically chosen for their appearance, these studs have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

Zinc-Plated Steel—The most common choice for areas with occasional exposure to moisture.

18-8 Stainless Steel—The choice for wet and outdoor environments, these studs resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

316 Stainless Steel—Superior to 18-8 stainless steel, these studs won't degrade when exposed to harsh weather, salt water, and most chemicals.

	(A)		(B)
	Screw Size	Thread Lg.	Thread Size	Thread Lg.	Lg.	Tensile Strength, psi	Hardness	Pkg. Qty.		Pkg.
Black-Oxide Steel



		No. 8	7/8"	8-32	5/8"	1 1/2"	Not Rated	Not Rated	50	90207A301	000000


		No. 8	1"	8-32	3/4"	1 3/4"	Not Rated	Not Rated	25	90207A302	00000
		No. 8	1"	8-32	1"	2"	Not Rated	Not Rated	25	90207A303	00000
		No. 10	7/8"	10-24	5/8"	1 1/2"	Not Rated	Not Rated	25	90207A304	00000
		No. 10	1"	10-24	1"	2"	Not Rated	Not Rated	25	90207A305	00000
		No. 10	1 1/2"	10-24	1"	2 1/2"	Not Rated	Not Rated	25	90207A306	00000
		No. 10	1 1/2"	10-24	1 1/2"	3"	Not Rated	Not Rated	10	90207A307	0000
		1/4"	1"	1/4"-20	1"	2"	Not Rated	Not Rated	10	90207A308	0000
		1/4"	1 1/2"	1/4"-20	1"	2 1/2"	Not Rated	Not Rated	10	90207A309	0000
		1/4"	1 1/2"	1/4"-20	1 1/2"	3"	Not Rated	Not Rated	10	90207A310	00000
		5/16"	1 1/2"	5/16"-18	1"	2 1/2"	Not Rated	Not Rated	10	90207A311	00000


		5/16"	1 1/2"	5/16"-18	1 1/2"	3"	Not Rated	Not Rated	5	90207A312	0000
		5/16"	2"	5/16"-18	1 1/2"	3 1/2"	Not Rated	Not Rated	5	90207A313	0000
		3/8"	1 1/2"	3/8"-16	1 1/2"	3"	Not Rated	Not Rated	5	90207A314	00000
		3/8"	2"	3/8"-16	1 1/2"	3 1/2"	Not Rated	Not Rated	5	90207A315	00000
		3/8"	2"	3/8"-16	2"	4"	Not Rated	Not Rated	5	90207A316	00000
		3/8"	3"	3/8"-16	1 3/8"	5"	Not Rated	Not Rated	5	90207A317	00000
		3/8"	3"	3/8"-16	1 1/2"	6"	Not Rated	Not Rated	5	90207A318	00000
		3/8"	3"	3/8"-16	2 1/2"	10"	Not Rated	Not Rated	1	90207A319	00000


		Zinc-Plated Steel



				No. 8	7/8"	8-32	5/8"	1 1/2"	Not Rated	Not Rated	100	90207A182	0000


				No. 8	1"	8-32	3/4"	1 3/4"	Not Rated	Not Rated	100	90207A185	0000
				No. 8	1"	8-32	1"	2"	Not Rated	Not Rated	100	90207A189	00000
				No. 10	7/8"	10-24	5/8"	1 1/2"	Not Rated	Not Rated	100	90207A251	00000
				No. 10	1"	10-24	1"	2"	Not Rated	Not Rated	50	90207A253	00000
				No. 10	1 1/2"	10-24	1"	2 1/2"	Not Rated	Not Rated	50	90207A255	00000
				No. 10	1 1/2"	10-24	1 1/2"	3"	Not Rated	Not Rated	50	90207A257	00000
				1/4"	1"	1/4"-20	1"	2"	Not Rated	Not Rated	50	90207A550	00000
				1/4"	1 1/2"	1/4"-20	1"	2 1/2"	Not Rated	Not Rated	50	90207A552	00000
				1/4"	1 1/2"	1/4"-20	1 1/2"	3"	Not Rated	Not Rated	25	90207A554	00000
				5/16"	1 1/2"	5/16"-18	1"	2 1/2"	Not Rated	Not Rated	25	90207A593	00000


				5/16"	1 1/2"	5/16"-18	1 1/2"	3"	Not Rated	Not Rated	25	90207A595	00000
				5/16"	2"	5/16"-18	1 1/2"	3 1/2"	Not Rated	Not Rated	25	90207A597	00000
				3/8"	1 1/2"	3/8"-16	1 1/2"	3"	Not Rated	Not Rated	25	90207A636	00000
				3/8"	2"	3/8"-16	1 1/2"	3 1/2"	Not Rated	Not Rated	10	90207A638	00000
				3/8"	2"	3/8"-16	2"	4"	Not Rated	Not Rated	10	90207A640	00000
				3/8"	3"	3/8"-16	1 3/8"	5"	Not Rated	Not Rated	10	90207A647	00000
				3/8"	3"	3/8"-16	1 1/2"	6"	Not Rated	Not Rated	10	90207A648	00000
				3/8"	3"	3/8"-16	2 1/2"	10"	Not Rated	Not Rated	1	90207A656	0000
				3/8"	3"	3/8"-16	2 1/2"	12"	Not Rated	Not Rated	1	90207A658	0000
				1/2"	3"	1/2"-13	2 1/2"	6"	Not Rated	Not Rated	1	90207A736	0000


				1/2"	3"	1/2"-13	2 1/2"	12"	Not Rated	Not Rated	1	90207A748	00000


				18-8 Stainless Steel



	No. 10				5/8"	10-24	3/8"	1"	Not Rated	Not Rated	25	90915A641	00000


	No. 10				7/8"	10-24	5/8"	1 1/2"	Not Rated	Not Rated	25	90915A410	00000
	No. 10				1"	10-24	1"	2"	Not Rated	Not Rated	25	90915A414	00000
	No. 10				1 1/2"	10-24	1"	2 1/2"	Not Rated	Not Rated	10	90915A642	0000
	No. 10				1 1/2"	10-24	1 1/2"	3"	Not Rated	Not Rated	10	90915A418	0000
	1/4"				7/8"	1/4"-20	5/8"	1 1/2"	Not Rated	Not Rated	10	90915A643	0000
	1/4"				1"	1/4"-20	1"	2"	Not Rated	Not Rated	10	90915A550	0000
	1/4"				1 1/2"	1/4"-20	1"	2 1/2"	Not Rated	Not Rated	10	90915A552	00000
	1/4"				1 1/2"	1/4"-20	1 1/2"	3"	Not Rated	Not Rated	10	90915A554	00000
	1/4"				2"	1/4"-20	1 1/2"	3 1/2"	Not Rated	Not Rated	10	90915A555	00000
	1/4"				2"	1/4"-20	2"	4"	Not Rated	Not Rated	10	90915A644	00000


	1/4"				3"	1/4"-20	1 3/8"	5"	Not Rated	Not Rated	5	90915A653	00000
	1/4"				3"	1/4"-20	1 1/2"	4 1/2"	Not Rated	Not Rated	10	90915A645	00000
	1/4"				3"	1/4"-20	1 1/2"	6"	Not Rated	Not Rated	5	90915A654	00000
	1/4"				3"	1/4"-20	2 1/2"	8"	Not Rated	Not Rated	5	90915A655	00000
	5/16"				7/8"	5/16"-18	5/8"	1 1/2"	Not Rated	Not Rated	10	90915A646	00000
	5/16"				1"	5/16"-18	1"	2"	Not Rated	Not Rated	10	90915A647	00000
	5/16"				1 1/2"	5/16"-18	1"	2 1/2"	Not Rated	Not Rated	10	90915A593	00000
	5/16"				1 1/2"	5/16"-18	1 1/2"	3"	Not Rated	Not Rated	10	90915A595	00000
	5/16"				2"	5/16"-18	1 1/2"	3 1/2"	Not Rated	Not Rated	10	90915A597	00000
	5/16"				2"	5/16"-18	2"	4"	Not Rated	Not Rated	5	90915A648	00000


	5/16"	3"			5/16"-18	1 1/4"	5"	Not Rated	Not Rated	5	90915A656	00000
	5/16"	3"	5/16"-18		1 1/2"	6"	Not Rated	Not Rated	5	90915A657	00000
	3/8"	1 1/2"	3/8"-16		1 1/2"	3"	Not Rated	Not Rated	5	90915A636	00000
	3/8"	2"	3/8"-16		1 1/2"	3 1/2"	Not Rated	Not Rated	5	90915A638	00000
	3/8"	2"	3/8"-16		2"	4"	Not Rated	Not Rated	5	90915A640	00000
	3/8"	3"	3/8"-16		1 3/8"	5"	Not Rated	Not Rated	1	90915A658	0000
	3/8"	3"	3/8"-16		1 1/2"	6"	Not Rated	Not Rated	1	90915A659	0000
	3/8"	3"	3/8"-16		2 1/2"	8"	Not Rated	Not Rated	1	90915A660	0000
	1/2"	2"	1/2"-13		1"	3"	Not Rated	Not Rated	1	90915A649	0000
	1/2"	2"	1/2"-13		1 1/2"	3 1/2"	Not Rated	Not Rated	1	90915A650	0000


	1/2"	2"	1/2"-13		2"	4"	Not Rated	Not Rated	1	90915A651	0000
	1/2"	3"	1/2"-13		2"	5"	Not Rated	Not Rated	1	90915A652	0000
	1/2"	3"	1/2"-13		2 1/2"	6"	Not Rated	Not Rated	1	90915A661	0000
	1/2"	3"	1/2"-13		2 1/2"	8"	Not Rated	Not Rated	1	90915A662	00000


	316 Stainless Steel



			M5		27 mm	M5 × 0.8 mm	20 mm	50 mm	Not Rated	Not Rated	1	98828A100	0000


			M6		37 mm	M6 × 1 mm	30 mm	70 mm	Not Rated	Not Rated	1	98828A200	0000
			M8		57 mm	M8 × 1.25 mm	40 mm	100 mm	Not Rated	Not Rated	1	98828A300	0000
			M10		40 mm	M10 × 1.5 mm	20 mm	60 mm	100,000	Rockwell C25	1	98828A310	0000
			M10		60 mm	M10 × 1.5 mm	20 mm	80 mm	100,000	Rockwell C25	1	98828A320	0000
			M10		70 mm	M10 × 1.5 mm	30 mm	100 mm	100,000	Rockwell C25	1	98828A330	0000

Hex-Drive Thread-Mount Studs for Wood

Turn these studs with a hex key to install more quickly than other studs for wood. Use them to suspend electrical wiring and to hang, mount, and fasten parts to wood structures. Also known as hanger bolts.

Stainless Steel—The choice for wet and outdoor environments, these studs resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	(A)		(B)
	Screw Size	Thread Lg.	Thread Size	Thread Lg.	Lg.	Drive Size	Tensile Strength	Hardness	Pkg. Qty.		Pkg.
Stainless Steel



		No. 8	1 3/16"	5/16"-18	5/16"	1 1/2"	5/32"	Not Rated	Not Rated	1	94706A920	00000

Dowel Screws

Use these to join two pieces of wood.

	Hardness	Pkg. Qty.		Pkg.
Steel







	3/16" Screw Size

	1 1/2"	3/4"	Not Rated	Rockwell B80	50	91685A110	000000


	2"	7/8"	Not Rated	Rockwell B80	50	91685A120	00000




			1/4" Screw Size

			1 1/2"	3/4"	Not Rated	Rockwell B80	50	91685A112	00000


			2"	7/8"	Not Rated	Rockwell B80	50	91685A114	00000
			2 1/2"	1 1/8"	Not Rated	Rockwell B80	50	91685A116	00000
			3"	1 3/8"	Not Rated	Rockwell B80	50	91685A118	00000
			3 1/2"	1 5/8"	Not Rated	Rockwell B80	25	91685A150	00000




					5/16" Screw Size

					2 1/2"	1 1/8"	Not Rated	Rockwell B80	25	91685A170	00000


					3"	1 3/8"	Not Rated	Rockwell B80	25	91685A180	00000
					4"	1 5/8"	Not Rated	Rockwell B80	25	91685A210	00000




							3/8" Screw Size

							2 1/2"	1 1/8"	Not Rated	Rockwell B80	10	91685A220	0000


							3"	1 3/8"	Not Rated	Rockwell B80	10	91685A231	00000
							4"	1 5/8"	Not Rated	Rockwell B80	10	91685A251	00000

Wood Screw-Style Hangers

Drive these hangers into wood with an adjustable wrench, pliers, or a special driver bit (sold separately). They’re also known as eye lags.

Zinc-Plated Steel—Zinc- and zinc yellow-chromate plated steel hangers are corrosion resistant in wet environments. The zinc yellow-chromate plated steel hangers meet quality standards outlined in ASTM B633 and dimensional standards outlined in ASME B18.2.1.

316 Stainless Steel—316 stainless steel hangers have excellent resistance to chemicals and salt water. They’re best for corrosive and marine environments.

	Hanger Bolts														Driver Bits
						Head
	Screw Size	Lg.	Threading	Thread Lg.	Eye Dia.	Wd.	Thk.	Ht.	Max. Wt. Cap.	For Use In	Specs. Met	Pkg. Qty.		Pkg.		Each
Zinc-Plated Steel



		1/4"	6"	Partially Threaded	1 1/2"	3/16"	13/32"	3/32"	23/32"	Not Rated	Wood	—	25	95396A111	000000	5977A42	000000


		Zinc-Yellow-Chromate-Plated Steel



				1/4"	3"	Partially Threaded	1 1/2"	3/16"	13/32"	3/32"	23/32"	Not Rated	Wood	ASME B18.2.1, ASTM B633	50	90171A554	00000	5977A42	00000


				1/4"	4"	Partially Threaded	1 1/2"	3/16"	13/32"	3/32"	23/32"	Not Rated	Wood	ASME B18.2.1, ASTM B633	25	90171A558	00000	5977A42	00000
				1/4"	5"	Partially Threaded	1 1/2"	3/16"	13/32"	3/32"	23/32"	Not Rated	Wood	ASME B18.2.1, ASTM B633	25	90171A562	00000	5977A42	00000
				5/16"	3 1/2"	Partially Threaded	1 3/4"	1/4"	7/16"	3/32"	9/16"	Not Rated	Wood	ASME B18.2.1, ASTM B633	25	90171A597	00000	5977A43	00000


				316 Stainless Steel



						1/4"	3"	Partially Threaded	1 1/2"	3/16"	13/32"	3/32"	23/32"	Not Rated	Wood	—	25	95396A112	00000	5977A42	00000

Drilling Screw-Style Hangers

Drill holes with the point on these hangers. Install with a special driver bit (sold separately).

Zinc-Yellow-Chromate-Plated Steel—Zinc-yellow-chromate-plated hangers are corrosion resistant in wet environments.

7/16" Wide Head—Some hangers with a _7/16" head width can drill through steel as thick as 12 ga.; others can drill through sheet metal and wood.

	Hanger Bolts												Driver Bits
							Head
	Screw Size	Max. Drilling Thk.	Lg.	Threading	Thread Lg.	Eye Dia.	Thk.	Ht.	For Use In	Pkg. Qty.		Pkg.		Each
Zinc-Yellow-Chromate-Plated Steel







				7/16" Wide Head

				1/4"	0.038"	2 3/4"	Partially Threaded	1 1/2"	3/16"	3/32"	9/16"	Sheet Metal, Wood	25	90171A113	000000	90171A810	000000