1 3/4" Wood Screws | McMaster-Carr

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49 Products

Steel Phillips Flat Head Wood Screws

Our most popular screws for wood. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

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

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

		Head
	Lg.	Dia.	Ht.	Softwood Drill Bit Size	Hardwood Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Black-Oxide Steel







				No. 8

				1 3/4"	0.332"	0.1"	5/64"	3/32"	82°	Standard	15	Partially Threaded	Thread Forming	10	90031A568	00000




						No. 10

						1 3/4"	0.385"	0.116"	3/32"	7/64"	82°	Standard	13	Partially Threaded	Thread Forming	10	90031A577	0000




								No. 12

								1 3/4"	0.438"	0.132"	7/64"	1/8"	82°	Standard	11	Partially Threaded	Thread Forming	10	90031A587	0000


								Zinc-Plated Steel







												No. 8

												1 3/4"	0.332"	0.1"	5/64"	3/32"	82°	Standard	15	Partially Threaded	Thread Forming	100	90031A204	00000




														No. 10

														1 3/4"	0.385"	0.116"	3/32"	7/64"	82°	Standard	13	Partially Threaded	Thread Forming	100	90031A252	00000




																No. 12

																1 3/4"	0.438"	0.132"	7/64"	1/8"	82°	Standard	11	Partially Threaded	Thread Forming	100	90031A300	00000

Stainless Steel Phillips Flat Head Wood Screws

When exposed to moisture and chemically treated wood, such as ACQ-treated (arsenic-free) lumber, these screws won't rust or corrode. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

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

		Head
	Lg.	Dia.	Ht.	Softwood Drill Bit Size	Hardwood Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				No. 8

				1 3/4"	0.332"	0.1"	5/64"	3/32"	82°	Standard	15	Partially Threaded	Thread Forming	25	90294A204	00000




						No. 10

						1 3/4"	0.385"	0.116"	3/32"	7/64"	82°	Standard	13	Partially Threaded	Thread Forming	25	90294A252	0000




								No. 12

								1 3/4"	0.438"	0.132"	7/64"	1/8"	82°	Standard	11	Partially Threaded	Thread Forming	25	90294A300	00000




										No. 14

										1 3/4"	0.507"	0.153"	7/64"	9/64"	82°	Standard	10	Partially Threaded	Thread Forming	10	90294A332	0000

Steel Torx Flanged Rounded Head Wood Screws

Prevent splitting and other damage from high torque when fastening surfaces such as cabinets, trim, and molding. The flange on these screws spreads pressure evenly across a wide area. All have a domed head. The Torx drive handles torque better than slotted, Phillips, and hex drives. Also known as star drives.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from under the flange.

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

		Head
	Lg.	Dia.	Ht.	Flange Thk.	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				No. 8

				1 3/4"	0.43"	0.09"	0.05"	15	Partially Threaded	Thread Forming	100	90396A140	000000

Steel Phillips Rounded Head Screws for Particleboard and Fiberboard

Deep, sharp, and widely spaced threads cut into workpieces without splitting them. These domed-head screws are often used on particleboard, medium-density fiberboard (MDF), and hardboard such as Masonite. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Length is measured from under the head.

Black Phosphate-Coated Steel—More corrosion resistant than black-oxide steel, these screws are suitable for environments with minimal moisture. They have a dark, matte coating to create a finished look.

		Head
	Lg.	Dia.	Ht.	Drill Bit Size	Rounded Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Black-Oxide Steel







				No. 10

				1 3/4"	0.373"	0.133"	3/32"	Standard	9	Partially Threaded	Thread Forming	100	91555A135	000000


				Black Phosphate-Coated Steel







								No. 8

								1 3/4"	0.322"	0.096"	5/64"	Standard	10	Partially Threaded	Thread Forming	100	91555A110	00000

Steel Torx Flat Head Screws for Joining Wood to Sheet Metal

Fasten wood to sheet metal while reducing stripping and pull-out. The dual threads on these screws grip both materials at the same time, so they install quickly, require less torque, and resist vibration. Also known as trailer floor screws, these screws are often used to fasten wooden boards to metal trailer frames. With a deep six-lobe opening, Torx drives handle more torque than slotted, Phillips, and hex drives. The flat head deters snags.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

		Head
	Lg.	Dia.	Ht.	Drill Bit Size	Countersink Angle	Flat Head Profile	Threading	Tapping Method	Pkg. Qty.		Pkg.
Black Phosphate-Coated Steel







				1/4"-20

				1 3/4"	0.479"	0.153"	3 Ga.	82°	Standard	Fully Threaded	Thread Forming	50	91087A129	000000




						5/16"-18

						1 3/4"	0.6"	0.191"	H	82°	Standard	Fully Threaded	Thread Forming	25	91087A238	00000

Steel Hex Head Wood Screws

Often used on posts and beams, the coarse threads on these screws dig in for a firm hold. The hex head's six contact points keep sockets in place to avoid slipping and stripping the drive. To tighten, use a wrench or six-point hex socket. Also known as lag bolts.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from under the head.

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

Hot-Dipped Galvanized Steel—Combines the strength of steel with the corrosion resistance of stainless steel. These screws are an economical alternative to 18-8 stainless steel in wet and outdoor environments. You can use them with chemically treated wood, such as ACQ-treated (arsenic-free) lumber, but they won't hold up to salt water.

	Threading	Tapping Method	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Steel







	1/4"

	1 3/4"	0.172"	10	Partially Threaded	Thread Forming	ASME B18.2.1	10	95452A103	00000




			5/16"

			1 3/4"	0.219"	9	Partially Threaded	Thread Forming	ASME B18.2.1	10	95452A116	0000




					3/8"

					1 3/4"	0.25"	7	Partially Threaded	Thread Forming	ASME B18.2.1	5	95452A129	0000


					Zinc-Plated Steel







									1/4"

									1 3/4"	0.172"	10	Partially Threaded	Thread Forming	ASME B18.2.1	100	91478A548	00000




											5/16"

											1 3/4"	0.219"	9	Partially Threaded	Thread Forming	ASME B18.2.1	50	91478A588	00000




													3/8"

													1 3/4"	0.25"	7	Partially Threaded	Thread Forming	ASME B18.2.1	50	91478A630	00000


													Hot-Dipped Galvanized Steel







																	3/8"

																	1 3/4"	0.25"	7	Partially Threaded	Thread Forming	ASME B18.2.1, ASTM A307, SAE J429	50	94048A287	00000

Brass Phillips Flat Head Wood Screws

These Phillips flat head screws sit flush, have a shiny look, and won't rust in wet environments. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

		Head
	Lg.	Dia.	Ht.	Softwood Drill Bit Size	Hardwood Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Brass







				No. 8

				1 3/4"	0.332"	0.1"	5/64"	3/32"	82°	Standard	15	Partially Threaded	Thread Forming	25	92114A204	000000




						No. 10

						1 3/4"	0.385"	0.116"	3/32"	7/64"	82°	Standard	13	Partially Threaded	Thread Forming	25	92114A252	00000




								No. 12

								1 3/4"	0.438"	0.132"	7/64"	1/8"	82°	Standard	11	Partially Threaded	Thread Forming	25	92114A300	00000

Stainless Steel Hex Head Wood Screws

With coarse threads that dig in, these screws secure posts and beams in outdoor and wet environments. They won't degrade from moisture or chemically treated wood, such as ACQ-treated (arsenic-free) lumber. The hex head's six contact points keep sockets in place to avoid slipping and stripping on the drive. To tighten, use a wrench or six-point hex socket. Also known as lag bolts.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from under the head.

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

	Threading	Tapping Method	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







	1/4"

	1 3/4"	0.172"	10	Partially Threaded	Thread Forming	ASME B18.2.1	25	92351A548	000000




			5/16"

			1 3/4"	0.219"	9	Partially Threaded	Thread Forming	ASME B18.2.1	10	92351A588	0000




					3/8"

					1 3/4"	0.25"	7	Partially Threaded	Thread Forming	ASME B18.2.1	10	92351A630	00000




							1/2"

							1 3/4"	0.344"	6	Partially Threaded	Thread Forming	ASME B18.2.1	5	92351A114	0000

Steel Phillips Flat Head Screws for Particleboard and Fiberboard

Deep, sharp, and widely spaced threads cut into workpieces without splitting them, while the head sits flush to prevent snags. These domed-head screws are often used on particleboard, medium-density fiberboard (MDF), and hardboard such as Masonite. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Length is measured from under the head.

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

		Head
	Lg.	Dia.	Ht.	Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Black-Oxide Steel







				No. 8

				1 3/4"	0.332"	0.1"	5/64"	82°	Standard	11	Partially Threaded	Thread Forming	100	90252A252	000000




						No. 9

						1 3/4"	0.358"	0.108"	45 Ga.	82°	Standard	10	Partially Threaded	Thread Forming	50	90252A261	0000




								No. 10

								1 3/4"	0.385"	0.116"	3/32"	82°	Standard	9	Partially Threaded	Thread Forming	50	90252A263	00000


								Zinc-Plated Steel







												No. 8

												1 3/4"	0.332"	0.1"	5/64"	82°	Standard	11	Partially Threaded	Thread Forming	50	97196A118	00000

Steel Phillips Oval Head Wood Screws

The domed head peeks out from the surface on trim work and other places where appearance matters. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

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

		Head
	Lg.	Dia.	Ht.	Softwood Drill Bit Size	Hardwood Drill Bit Size	Countersink Angle	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				No. 10

				1 3/4"	0.385"	0.176"	3/32"	7/64"	82°	13	Partially Threaded	Thread Forming	25	99917A116	000000

Steel Square/Phillips Flat Head Screws for Plywood and Oriented Strand Board


	Square/Phillips Drive

Serrated threads cut through wood fibers of plywood and oriented strand board (OSB) to minimize splitting, and the flat head deters snags. These screws have a combination drive, so you can use Phillips drivers to tighten them or square drivers if you need more torque.

Length is measured from under the head.

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

		Head
	Lg.	Dia.	Ht.	Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				No. 8

				1 3/4"	0.3"	0.11"	5/64"	90°	Standard	11	Fully Threaded	Thread Forming	20	91550A321	00000

Stainless Steel Hex Head Screws for Joining Plastic to Wood

Tighten these corrosion-resistant screws with a nutdriver or socket to mount plastic panels. Wings under the head cut a hole slightly larger than the threads, so the plastic can expand and contract as temperatures change. The threads engage only with the wood below, leaving space for the plastic. A washer made from aluminum and rubber bonded to steel adds a watertight seal.

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

		Head
	Lg.	Wd.	Ht.	Approx. Threads per In.	Washer Material	Washer OD	Washer Thk.	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				No. 12 Screw Size

				1 3/4"	0.25"	0.136"	11	Aluminum/Rubber/Steel	0.551"	0.13"	25	92879A176	000000

Stainless Steel Square-Drive Flat Head Screws for Wood and Composite Wood

Fasten decking and fencing outdoors with screws that won't rust. They're often used with chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as deck screws, their trumpet shape spreads pressure to prevent splitting, while the flat head limits snags. The square drive handles more torque than slotted and Phillips drives.

The screw drill tip acts as a built-in pilot, though pilot holes are still recommended near edges to avoid splitting. Length is measured from the top of the head.

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

		Head
	Lg.	Dia.	Ht.	Drill Bit Size	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Tapping Screw Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				No. 8

				1 3/4"	0.344"	0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	100	90000A213	000000




						No. 10

						1 3/4"	0.344"	0.189"	3/32"	Standard	8	Partially Threaded	Thread Cutting	17	50	90000A226	00000

Steel Slotted Flat Head Wood Screws

The flat head on these wood screws sits flush to keep other objects from snagging. With only two contact points, it's best to hand tighten the slotted drive instead of using power tools.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

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

		Head
	Lg.	Dia.	Ht.	Softwood Drill Bit Size	Hardwood Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				No. 10

				1 3/4"	0.385"	0.116"	3/32"	7/64"	82°	Standard	13	Partially Threaded	Thread Forming	100	90006A252	00000




						No. 14

						1 3/4"	0.507"	0.153"	7/64"	9/64"	82°	Standard	10	Partially Threaded	Thread Forming	100	90006A318	00000

Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal

With Cutting Wings

Join wood to sheet metal by drilling, tapping, and fastening in one go. These screws have a self-drilling tip to clear the way while their threads tap into the material. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.

Length is measured from the top of the head.

Corrosion-Resistant-Coated Steel—Resist rust at the level of stainless steel. This coating has been tested against extreme standards for wet and outdoor environments, including 1,000 hours of salt spray.

Cutting-Winged Body—These wings create a tight hold by preventing screw threads from engaging until they reach the sheet metal. Then, the wings snap off so the screw can switch from drilling through wood to fastening into metal.

		Head
	Lg.	Dia.	Ht.	Drill Point Size	Drill Tip Lg.	For Wood Thk. Range	For Metal Thk. Range	Body Type	Flat Head Profile	Threading	Tapping Method	Pkg. Qty.		Pkg.
Corrosion-Resistant-Coated Steel







				12-24

				1 3/4"	0.54"	0.165"	No. 4	3/4"	0.5" to 0.75"	0.06" to 0.31"	Cutting Wings	Standard	Fully Threaded	Thread Forming	50	94054A223	000000

Steel Square-Drive Flat Head Wood Screws

Avoid slipping when using a lot of torque. These square-drive screws withstand more torque than slotted and Phillips drives. Also known as Robertson-drive screws. The flat head on these screws sits flush, so you won't need to worry about snags.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from the top of the head.

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

		Head
	Lg.	Dia.	Ht.	Softwood Drill Bit Size	Hardwood Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				No. 10

				1 3/4"	0.385"	0.116"	3/32"	7/64"	82°	Standard	13	Partially Threaded	Thread Forming	50	90610A652	000000

Serrated Stainless Steel Square-Drive Flat Head Wood Screws

Lock in for a tighter hold than typical wood screws. Serrations beneath the flat head dig into wood to secure these screws into place. Made of stainless steel, they won't degrade from moisture or chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as a Robertson drive, the square drive handles more torque than slotted and Phillips drives, so it's less likely to slip.

The screw drill tip acts as a built-in pilot, though pilot holes are still recommended near edges to avoid splitting. Length is measured from the top of the head.

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

		Head
	Lg.	Dia.	Ht.	Drill Bit Size	Countersink Angle	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Tapping Screw Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				No. 8

				1 3/4"	0.311"	0.088"	29 Ga.	90°	Standard	8	Partially Threaded	Thread Cutting	17	25	98643A654	000000

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.

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



		No. 8	1"	8-32	3/4"	1 3/4"	Not Rated	Not Rated	25	90207A302	000000


		Zinc-Plated Steel



				No. 8	1"	8-32	3/4"	1 3/4"	Not Rated	Not Rated	100	90207A185	0000

Wood Dowel Pins

The choice for joining wood components, these pins won’t scratch or damage surfaces. They expand for a tight fit when glued.

Wood

	Pkg.
Wood







	1/4" Diameter

	1 3/4"	100	97195A103	00000




			5/16" Diameter

			1 3/4"	100	97195A107	0000




					3/8" Diameter

					1 3/4"	100	97195A111	0000




							7/16" Diameter

							1 3/4"	100	97195A114	0000