Black Phosphate Wood Screws

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29 Products

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.

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	Countersink Angle	Flat Head Profile	Threading	Tapping Method	Pkg. Qty.		Pkg.
Black Phosphate-Coated Steel







				1/4"-20

				1"	0.479"	0.153"	3 Ga.	82°	Standard	Fully Threaded	Thread Forming	50	000000000	000000


				1 1/4"	0.479"	0.153"	3 Ga.	82°	Standard	Fully Threaded	Thread Forming	50	000000000	00000
				1 1/2"	0.479"	0.153"	3 Ga.	82°	Standard	Fully Threaded	Thread Forming	50	000000000	00000
				1 3/4"	0.479"	0.153"	3 Ga.	82°	Standard	Fully Threaded	Thread Forming	50	000000000	00000
				2"	0.479"	0.153"	3 Ga.	82°	Standard	Fully Threaded	Thread Forming	50	000000000	00000
				2 1/4"	0.479"	0.153"	3 Ga.	82°	Standard	Partially Threaded	Thread Forming	50	000000000	00000
				2 1/2"	0.479"	0.153"	3 Ga.	82°	Standard	Partially Threaded	Thread Forming	25	000000000	00000
				3"	0.479"	0.153"	3 Ga.	82°	Standard	Partially Threaded	Thread Forming	25	000000000	00000
				3 1/2"	0.479"	0.153"	3 Ga.	82°	Standard	Partially Threaded	Thread Forming	10	000000000	00000
				4"	0.479"	0.153"	3 Ga.	82°	Standard	Partially Threaded	Thread Forming	10	000000000	00000




						5/16"-18

						1 3/4"	0.6"	0.191"	H	82°	Standard	Fully Threaded	Thread Forming	25	000000000	00000


						2"	0.6"	0.191"	H	82°	Standard	Fully Threaded	Thread Forming	25	000000000	00000
						2 1/4"	0.6"	0.191"	H	82°	Standard	Partially Threaded	Thread Forming	10	000000000	0000
						2 1/2"	0.6"	0.191"	H	82°	Standard	Partially Threaded	Thread Forming	25	000000000	00000
						3"	0.6"	0.191"	H	82°	Standard	Partially Threaded	Thread Forming	10	000000000	00000

Strong-Hold Drywall Screws for Wood

Alternating high and low threads minimize driving torque and allow the screw to hold more material between threads for a stronger hold and better strip-resistance than standard drywall screws for wood. A curved neck sinks into drywall without tearing the paper surface.

Black Phosphate-Coated Steel—Black phosphate-coated steel screws resist corrosion in dry environments.

Length—Length is measured from the top of the head.

		Head		Drive
	Lg.	Dia.	Ht.	Size	Style	Max. Drilling Thk.	Approx. Threads per In.	Threading	Min. Thread Lg.	Pkg. Qty.		Pkg.
Black Phosphate-Coated Steel







				No. 6 Screw Size

				1"	0.334"	0.031"	No. 2	Phillips	0.036"	18	Fully Threaded	—	100	000000000	00000


				1 1/4"	0.334"	0.031"	No. 2	Phillips	0.036"	18	Fully Threaded	—	100	000000000	0000
				1 5/8"	0.334"	0.031"	No. 2	Phillips	0.036"	18	Fully Threaded	—	100	000000000	0000
				2"	0.334"	0.031"	No. 2	Phillips	0.036"	18	Fully Threaded	—	100	000000000	0000
				2 1/4"	0.334"	0.031"	No. 2	Phillips	0.036"	18	Fully Threaded	—	100	000000000	0000




						No. 8 Screw Size

						2 1/2"	0.334"	0.039"	No. 2	Phillips	0.036"	18	Fully Threaded	—	100	000000000	00000


						3"	0.334"	0.039"	No. 2	Phillips	0.036"	18	Partially Threaded	2"	100	000000000	00000

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.

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







				No. 8

				1/2"	0.322"	0.096"	5/64"	Standard	8	Partially Threaded	Thread Forming	100	000000000	00000


				1 1/4"	0.322"	0.096"	5/64"	Standard	9	Partially Threaded	Thread Forming	100	000000000	0000
				1 3/4"	0.322"	0.096"	5/64"	Standard	10	Partially Threaded	Thread Forming	100	000000000	0000
				2"	0.322"	0.096"	5/64"	Standard	9	Partially Threaded	Thread Forming	100	000000000	0000

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

The thin head reduces surface damage and leaves a smooth, near-invisible finish on trim, drywall, and other surfaces. These screws have a square drive that handles more torque than slotted and Phillips drives. Their flat head sits flush so they won't snag.

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	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Black Phosphate-Coated Steel







				No. 6

				1 5/8"	0.224"	0.135"	1/16"	Narrow	18	Partially Threaded	Thread Forming	100	000000000	000000


				2 1/4"	0.224"	0.135"	1/16"	Narrow	18	Partially Threaded	Thread Forming	100	000000000	00000




						No. 8

						3"	0.264"	0.155"	5/64"	Narrow	15	Partially Threaded	Thread Forming	50	000000000	00000