Self-Drilling Wood Screws

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198 Products

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.

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

		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. 6

				5/8"	0.344"	0.197"	1/16"	Standard	9	Partially Threaded	Thread Cutting	17	100	90000A143	000000


				3/4"	0.344"	0.197"	1/16"	Standard	9	Partially Threaded	Thread Cutting	17	100	90000A147	00000
				1"	0.344"	0.197"	1/16"	Standard	9	Partially Threaded	Thread Cutting	17	100	90000A151	00000
				1 1/4"	0.344"	0.197"	1/16"	Standard	9	Partially Threaded	Thread Cutting	17	100	90000A155	00000
				1 1/2"	0.344"	0.197"	1/16"	Standard	18	Partially Threaded	Thread Cutting	17	100	90000A157	00000
				1 5/8"	0.344"	0.197"	1/16"	Standard	9	Partially Threaded	Thread Cutting	17	100	90000A159	00000
				2"	0.344"	0.197"	1/16"	Standard	18	Partially Threaded	Thread Cutting	17	100	90000A161	00000




						No. 7

						1"	0.23"	0.125"	1/16"	Narrow	10	Partially Threaded	Thread Cutting	17	50	91530A771	00000


						1 5/8"	0.23"	0.125"	1/16"	Narrow	10	Partially Threaded	Thread Cutting	17	50	91530A774	00000
						2"	0.23"	0.125"	1/16"	Narrow	10	Partially Threaded	Thread Cutting	17	50	91530A776	00000
						2 1/4"	0.23"	0.125"	1/16"	Narrow	10	Partially Threaded	Thread Cutting	17	50	91530A778	00000
						2 1/2"	0.23"	0.125"	1/16"	Narrow	10	Partially Threaded	Thread Cutting	17	50	91530A782	00000
						3"	0.23"	0.125"	1/16"	Narrow	10	Partially Threaded	Thread Cutting	17	25	91530A400	00000




								No. 8

								3/4"	0.344"	0.192"	5/64"	Standard	8	Partially Threaded	Thread Cutting	17	100	90000A188	00000


								1"	0.344"	0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	100	90000A211	0000
								1 1/4"	0.344"	0.192"	5/64"	Standard	8	Partially Threaded	Thread Cutting	17	100	90000A196	00000
								1 1/2"	0.344"	0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	100	90000A212	00000
								1 5/8"	0.344"	0.192"	5/64"	Standard	8	Partially Threaded	Thread Cutting	17	50	90000A200	00000
								1 3/4"	0.344"	0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	100	90000A213	00000
								2"	0.344"	0.192"	5/64"	Standard	8	Partially Threaded	Thread Cutting	17	50	90000A205	00000
								2 1/2"	0.344"	0.192"	5/64"	Standard	8	Partially Threaded	Thread Cutting	17	50	90000A215	00000
								2 3/4"	0.344"	0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	50	90000A214	00000
								3"	0.344"	0.192"	5/64"	Standard	8	Partially Threaded	Thread Cutting	17	50	90000A219	00000




										No. 9

										4"	0.25"	0.125"	5/64"	Narrow	14	Partially Threaded	Thread Cutting	17	10	91530A425	0000




												No. 10

												1"	0.344"	0.189"	3/32"	Standard	8	Partially Threaded	Thread Cutting	17	100	90000A220	00000


1 1/4"	0.344"											0.189"	3/32"	Standard	8	Partially Threaded	Thread Cutting	17	100	90000A222	00000
1 1/2"	0.344"											0.189"	3/32"	Standard	8	Partially Threaded	Thread Cutting	17	50	90000A224	00000
1 5/8"	0.344"											0.189"	3/32"	Standard	13	Partially Threaded	Thread Cutting	17	50	90000A311	00000
1 3/4"	0.344"	0.189"										3/32"	Standard	8	Partially Threaded	Thread Cutting	17	50	90000A226	00000
2"	0.344"	0.189"	3/32"									Standard	8	Partially Threaded	Thread Cutting	17	50	90000A228	00000
2 1/4"	0.344"	0.189"	3/32"									Standard	13	Partially Threaded	Thread Cutting	17	50	90000A312	00000
2 1/2"	0.344"	0.189"	3/32"									Standard	8	Partially Threaded	Thread Cutting	17	25	90000A255	00000
2 3/4"	0.344"	0.189"	3/32"									Standard	13	Partially Threaded	Thread Cutting	17	25	90000A313	0000
3"	0.344"	0.189"	3/32"									Standard	8	Partially Threaded	Thread Cutting	17	25	90000A257	00000
3 3/4"	0.344"	0.189"	3/32"									Standard	8	Partially Threaded	Thread Cutting	17	25	90000A265	00000


4"	0.344"	0.189"	3/32"									Standard	13	Partially Threaded	Thread Cutting	17	25	90000A314	00000




		No. 12

		2"	0.43"	0.203"								7/64"	Standard	11	Partially Threaded	Thread Cutting	17	25	90000A612	0000


		2 1/2"	0.43"	0.203"	7/64"							Standard	7	Partially Threaded	Thread Cutting	17	25	90000A601	00000
		4"	0.43"	0.203"	7/64"							Standard	7	Partially Threaded	Thread Cutting	17	10	90000A616	00000
		4 1/2"	0.43"	0.203"	7/64"							Standard	7	Partially Threaded	Thread Cutting	17	10	90000A622	00000
		5 1/2"	0.43"	0.203"	7/64"							Standard	11	Partially Threaded	Thread Cutting	17	10	90000A613	0000
		6"	0.43"	0.203"	7/64"							Standard	7	Partially Threaded	Thread Cutting	17	10	90000A633	00000




				No. 14

				2"	0.43"							0.25"	7/64"	Standard	10	Partially Threaded	Thread Cutting	17	25	90000A711	00000


				2 1/2"	0.43"	0.25"	7/64"					Standard	10	Partially Threaded	Thread Cutting	17	10	90000A712	0000
				3"	0.43"	0.25"	7/64"					Standard	10	Partially Threaded	Thread Cutting	17	10	90000A713	0000
				3 1/2"	0.43"	0.25"	7/64"					Standard	7	Partially Threaded	Thread Cutting	17	10	90000A744	00000
				4"	0.43"	0.25"	7/64"					Standard	7	Partially Threaded	Thread Cutting	17	10	90000A749	00000
				4 1/2"	0.43"	0.25"	7/64"					Standard	10	Partially Threaded	Thread Cutting	17	10	90000A714	00000
				5"	0.43"	0.25"	7/64"					Standard	7	Partially Threaded	Thread Cutting	17	10	90000A755	00000
				6"	0.43"	0.25"	7/64"					Standard	10	Partially Threaded	Thread Cutting	17	5	90000A715	0000


				316 Stainless Steel







								No. 6

								1 1/4"	0.344"			0.197"	1/16"	Standard	18	Partially Threaded	Thread Cutting	17	50	90000A401	0000


								1 5/8"	0.344"			0.197"	1/16"	Standard	18	Partially Threaded	Thread Cutting	17	50	90000A402	0000
								2"	0.344"			0.197"	1/16"	Standard	18	Partially Threaded	Thread Cutting	17	50	90000A403	0000




										No. 7

										1 5/8"	0.23"	0.125"	1/16"	Narrow	16	Partially Threaded	Thread Cutting	17	50	90076A710	00000


										2 1/4"	0.23"	0.125"	1/16"	Narrow	16	Partially Threaded	Thread Cutting	17	25	90076A720	00000
										3"	0.23"	0.125"	1/16"	Narrow	16	Partially Threaded	Thread Cutting	17	25	90076A730	00000




												No. 8

												1 1/4"	0.344"	0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	50	90000A281	00000


1 1/2"	0.344"											0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	50	90000A404	0000
1 5/8"	0.344"											0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	50	90000A290	00000
2"	0.344"											0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	50	90000A291	00000
2 1/4"	0.344"											0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	50	90000A405	00000
3"	0.344"											0.192"	5/64"	Standard	15	Partially Threaded	Thread Cutting	17	25	90000A406	0000




												No. 10

												1 5/8"	0.344"	0.189"	3/32"	Standard	13	Partially Threaded	Thread Cutting	17	25	90000A407	0000


		2 1/2"	0.344"									0.189"	3/32"	Standard	13	Partially Threaded	Thread Cutting	17	25	90000A293	00000
		3"	0.344"									0.189"	3/32"	Standard	13	Partially Threaded	Thread Cutting	17	25	90000A294	00000
		3 1/2"	0.344"									0.189"	3/32"	Standard	13	Partially Threaded	Thread Cutting	17	25	90000A295	00000
		4"	0.344"									0.189"	3/32"	Standard	13	Partially Threaded	Thread Cutting	17	10	90000A408	0000




												No. 12

												2"	0.43"	0.203"	7/64"	Standard	11	Partially Threaded	Thread Cutting	17	10	90000A409	0000


												2 1/2"	0.43"	0.203"	7/64"	Standard	11	Partially Threaded	Thread Cutting	17	25	90000A297	00000
												3"	0.43"	0.203"	7/64"	Standard	11	Partially Threaded	Thread Cutting	17	25	90000A298	00000
												4"	0.43"	0.203"	7/64"	Standard	11	Partially Threaded	Thread Cutting	17	10	90000A300	0000
				4 1/2"								0.43"	0.203"	7/64"	Standard	11	Partially Threaded	Thread Cutting	17	10	90000A303	00000
				5"	0.43"							0.203"	7/64"	Standard	11	Partially Threaded	Thread Cutting	17	10	90000A305	00000




						No. 14

						3"	0.43"					0.25"	7/64"	Standard	10	Partially Threaded	Thread Cutting	17	10	90000A411	0000


						4"	0.43"					0.25"	7/64"	Standard	10	Partially Threaded	Thread Cutting	17	5	90000A413	0000
						5"	0.43"					0.25"	7/64"	Standard	10	Partially Threaded	Thread Cutting	17	5	90000A414	0000
						6"	0.43"					0.25"	7/64"	Standard	10	Partially Threaded	Thread Cutting	17	5	90000A415	0000

Steel Phillips Rounded Head Drilling Screws

Drill and fasten metal in one step and create a finished look with these rounded head screws. The Phillips drive withstands less torque than a hex drive, so apply even, steady pressure when drilling.

Length is measured from under the head.

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

		Drill Tip		Head, mm
	Lg., mm	Point Size	Lg., mm	Dia.	Ht.	Max. Drilling Thk., mm	Drive Size	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M2.9 Screw Size

				9.5	No. 1	6.25	5.6	2.4	1.9	No. 1	DIN 7504 N, ISO 7049	100	90769A101	00000


				13	No. 1	6.4	5.6	2.4	1.9	No. 1	DIN 7504 N, ISO 7049	100	90769A102	0000
				16	No. 1	6.4	5.6	2.4	1.9	No. 1	DIN 7504 N, ISO 7049	100	90769A103	0000
				19	No. 1	6.5	5.6	2.4	1.9	No. 1	DIN 7504 N, ISO 7049	100	90769A104	0000




						M3.5 Screw Size

						9.5	No. 2	6.65	7	2.6	2.25	No. 2	DIN 7504 N, ISO 7049	100	90769A105	0000


						13	No. 2	6.8	7	2.6	2.25	No. 2	DIN 7504 N, ISO 7049	100	90769A106	0000
						16	No. 2	6.8	7	2.6	2.25	No. 2	DIN 7504 N, ISO 7049	100	90769A107	0000
						19	No. 2	6.9	7	2.6	2.25	No. 2	DIN 7504 N, ISO 7049	100	90769A108	0000
						22	No. 2	6.9	7	2.6	2.25	No. 2	DIN 7504 N, ISO 7049	100	90769A109	0000
						25	No. 2	6.9	7	2.6	2.25	No. 2	DIN 7504 N, ISO 7049	100	90769A111	0000
						32	No. 2	6.9	7	2.6	2.25	No. 2	DIN 7504 N, ISO 7049	100	90769A112	00000




								M3.9 Screw Size

								9.5	No. 2	6.7	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A113	00000


								13	No. 2	7.2	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A114	0000
								16	No. 2	7.2	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A115	0000
								19	No. 2	7.3	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A116	0000
								22	No. 2	7.3	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A117	0000
								25	No. 2	7.3	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A118	00000
								32	No. 2	7.5	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A119	00000
								38	No. 2	7.5	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A121	00000
								45	No. 2	7.5	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A122	00000
								50	No. 2	7.5	7.5	2.8	2.4	No. 2	DIN 7504 N, ISO 7049	100	90769A123	00000




										M4.2 Screw Size

										13	No. 2	8.7	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	100	90769A124	0000


										16	No. 2	8.7	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	100	90769A125	0000
										19	No. 2	8.7	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	100	90769A126	00000
										22	No. 2	8.7	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	100	90769A127	00000
										25	No. 2	8.7	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	100	90769A128	00000
										32	No. 2	9	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	100	90769A129	00000
										38	No. 2	9	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	100	90769A131	00000
										45	No. 2	9	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	50	90769A132	0000
50										No. 2	9	8.2	3.1	3	No. 2	DIN 7504 N, ISO 7049	50	90769A133	00000




		M4.8 Screw Size

		13	No. 2							9.3	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	100	90769A134	0000


		16	No. 2							10.2	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	100	90769A135	00000
		19	No. 2							10.3	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	100	90769A136	00000
		22	No. 2							10.3	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	100	90769A137	00000
		25	No. 2							10.3	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	100	90769A138	00000
		32	No. 2							10.5	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	50	90769A139	0000
		38	No. 2							10.5	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	50	90769A141	0000
		45	No. 2							10.5	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	50	90769A142	0000
		50	No. 2							10.5	9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	50	90769A143	00000
		60	No. 2	10.5						9.5	3.7	4.4	No. 2	DIN 7504 N, ISO 7049	50	90769A144	00000
		70	No. 2	10.5	9.5					3.7	4.4	No. 2	DIN 7504 N, ISO 7049	25	90769A145	00000


		80	No. 2	10.5	9.5					3.7	4.4	No. 2	DIN 7504 N, ISO 7049	25	90769A146	0000
		90	No. 2	10.5	9.5					3.7	4.4	No. 2	DIN 7504 N, ISO 7049	25	90769A147	00000
		100	No. 2	10.5	9.5					3.7	4.4	No. 2	DIN 7504 N, ISO 7049	25	90769A148	00000
		110	No. 2	10.5	9.5					3.7	4.4	No. 2	DIN 7504 N, ISO 7049	10	90769A149	0000
		120	No. 2	10.5	9.5					3.7	4.4	No. 2	DIN 7504 N, ISO 7049	10	90769A151	0000




				M5.5 Screw Size

				16	No. 3					11	11	4	5.25	No. 3	DIN 7504 N, ISO 7049	50	90769A152	0000


				19	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	50	90769A153	0000
				22	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	50	90769A154	0000
				25	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	50	90769A155	00000
				32	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	50	90769A156	00000
				38	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	50	90769A157	00000
				45	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	25	90769A158	0000
				50	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	25	90769A159	0000
				60	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	25	90769A161	00000
				70	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	25	90769A162	00000
				80	No. 3	11	11			4	5.25	No. 3	DIN 7504 N, ISO 7049	25	90769A163	00000




						M6.3 Screw Size

						16	No. 3			12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	50	90769A164	00000


						19	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	50	90769A165	00000
						22	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	50	90769A166	00000
						25	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	50	90769A167	00000
						32	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	25	90769A168	0000
						38	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	25	90769A169	0000
						45	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	25	90769A171	0000
						50	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	25	90769A172	0000
						60	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	25	90769A173	00000
						70	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	10	90769A174	0000
						80	No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	10	90769A175	0000


90						No. 3	12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	10	90769A176	0000
100	No. 3					12	12.5	4.6	6	No. 3	DIN 7504 N, ISO 7049	10	90769A177	0000

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


With Cutting Wings	Without 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.

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

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	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				10-24

				3 1/2"	0.362"	0.116"	No. 4	3/8"	0.75" to 2.5"	0.11" to 0.21"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	10	94054A211	00000


				4"	0.362"	0.116"	No. 4	3/8"	0.75" to 2.75"	0.11" to 0.21"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	5	94054A212	0000




						12-24

						2"	0.412"	0.132"	No. 4	7/16"	0.5" to 1.25"	0.11" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	10	94054A213	00000


						2 1/2"	0.412"	0.132"	No. 4	7/16"	0.5" to 1.5"	0.11" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	10	94054A214	00000
						3 1/2"	0.412"	0.132"	No. 4	7/16"	0.75" to 2.5"	0.11" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	5	94054A215	0000
						4"	0.412"	0.132"	No. 4	7/16"	0.75" to 2.625"	0.11" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	5	94054A216	00000




								1/4"-20

								2 3/4"	0.472"	0.153"	No. 4	1/2"	0.75" to 1.75"	0.11" to 0.375"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	10	94054A217	00000


								3 1/4"	0.472"	0.153"	No. 4	1/2"	0.75" to 2.25"	0.11" to 0.375"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	5	94054A218	00000
								3 1/2"	0.472"	0.153"	No. 4	1/2"	0.75" to 2.5"	0.11" to 0.375"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	5	94054A219	00000
								3 3/4"	0.472"	0.153"	No. 4	1/2"	0.75" to 2.75"	0.11" to 0.375"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	5	94054A221	00000


								Corrosion-Resistant-Coated Steel







												No. 10

												1 1/2"	0.48"	0.144"	No. 3	1/4"	0.25" to 0.75"	0.04" to 0.18"	—	Standard	16	Fully Threaded	Thread Forming	100	94054A251	00000


												1 13/16"	0.47"	0.135"	No. 3	13/16"	0.25" to 0.75"	0.04" to 0.15"	—	Standard	16	Fully Threaded	Thread Forming	50	94054A222	0000




														10-24

														3/4"	0.48"	0.144"	No. 3	1/4"	0.25" to 0.375"	0.04" to 0.17"	—	Standard	—	Fully Threaded	Thread Forming	100	94054A245	0000


														1"	0.48"	0.144"	No. 3	1/4"	0.25" to 0.5"	0.04" to 0.17"	—	Standard	—	Fully Threaded	Thread Forming	100	94054A247	00000
														1 1/4"	0.48"	0.144"	No. 3	1/4"	0.25" to 0.75"	0.04" to 0.17"	—	Standard	—	Fully Threaded	Thread Forming	100	94054A249	0000
1 7/16"														0.41"	0.17"	No. 3	1/4"	0.25" to 0.75"	0.06" to 0.17"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	50	94054A301	00000




		12-24

		1 5/8"	0.476"											0.25"	No. 4	7/16"	0.75" to 1.125"	0.13" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	50	94054A401	00000


		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	00000
		2 1/4"	0.438"											0.16"	No. 4	1/2"	0.75" to 1.375"	0.13" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	10	94053A110	00000
		2 3/4"	0.438"											0.16"	No. 4	1/2"	0.75" to 1.625"	0.13" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	10	94053A120	00000




				1/4"-20

				3"	0.507"									0.175"	No. 4	1/2"	0.75" to 2"	0.13" to 0.25"	Cutting Wings	Standard	—	Fully Threaded	Thread Forming	25	94053A130	00000


				4"	0.485"									0.185"	No. 4	7/8"	0.75" to 2.875"	0.06" to 0.31"	Cutting Wings	Standard	—	Partially Threaded	Thread Forming	10	94054A225	0000

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. 6

				1 5/8"	0.279"	0.083"	32 Ga.	90°	Standard	9	Partially Threaded	Thread Cutting	17	25	98643A651	00000




						No. 8

						1 1/4"	0.311"	0.088"	29 Ga.	90°	Standard	8	Partially Threaded	Thread Cutting	17	25	98643A652	0000


						1 1/2"	0.311"	0.088"	29 Ga.	90°	Standard	8	Partially Threaded	Thread Cutting	17	25	98643A653	00000
						1 5/8"	0.311"	0.088"	3/32"	90°	Standard	15	Partially Threaded	Thread Cutting	17	25	98643A350	0000
						1 3/4"	0.311"	0.088"	29 Ga.	90°	Standard	8	Partially Threaded	Thread Cutting	17	25	98643A654	00000
						2"	0.311"	0.088"	3/32"	90°	Standard	15	Partially Threaded	Thread Cutting	17	25	98643A370	00000
						2 1/2"	0.311"	0.088"	3/32"	90°	Standard	15	Partially Threaded	Thread Cutting	17	10	98643A390	0000
						3"	0.311"	0.088"	29 Ga.	90°	Standard	8	Partially Threaded	Thread Cutting	17	10	98643A655	0000




								No. 10

								2 1/2"	0.378"	0.11"	7/64"	90°	Standard	13	Partially Threaded	Thread Cutting	17	10	98643A610	0000


								3"	0.378"	0.11"	7/64"	90°	Standard	13	Partially Threaded	Thread Cutting	17	10	98643A640	0000
								3 1/2"	0.378"	0.11"	24 Ga.	90°	Standard	8	Partially Threaded	Thread Cutting	17	10	98643A656	00000
								4"	0.378"	0.11"	24 Ga.	90°	Standard	8	Partially Threaded	Thread Cutting	17	5	98643A657	0000

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

With Cutting Wings

Without Cutting

Wings

These rust-resistant screws join wood to sheet metal by drilling, tapping, and fastening in one go. Their self-drilling tip clears the way while their threads tap into the material. Made of stainless steel, they also won't degrade from chemically treated wood, such as ACQ-treated (arsenic-free) lumber. 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.

Galvanic-Barrier-Coated 18-8 Stainless Steel—A protective layer stops corrosion from metal-to-metal contact. A good choice for outdoor and wet environments, these screws also won't rust.

		Head
	Lg.	Dia.	Ht.	Drill Point Size	Drill Tip Lg.	Body Type	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Galvanic-Barrier-Coated 18-8 Stainless Steel







				No. 10

				1 1/2"	0.37"	0.178"	No. 3	1/4"	Cutting Wings	Standard	16	Fully Threaded	Thread Forming	10	90420A720	000000




						No. 12

						1"	0.415"	0.09"	No. 2	19/64"	—	Undercut	14	Fully Threaded	Thread Forming	10	90420A760	0000


						1 1/2"	0.415"	0.09"	No. 2	19/64"	—	Undercut	14	Fully Threaded	Thread Forming	10	90420A763	00000
						2 13/16"	0.415"	0.2"	No. 5	45/64"	Cutting Wings	Standard	14	Partially Threaded	Thread Forming	5	90420A724	0000




								1/4"-20

								2 13/16"	0.48"	0.2"	No. 5	45/64"	Cutting Wings	Standard	—	Partially Threaded	Thread Forming	5	90420A728	00000


								3"	0.48"	0.1"	No. 3	5/16"	—	Undercut	—	Partially Threaded	Thread Forming	5	90420A766	00000
								4"	0.48"	0.1"	No. 3	5/16"	—	Undercut	—	Partially Threaded	Thread Forming	5	90420A769	00000

Distortion-Free Screws for Composite Wood

Reverse threads pull stray material inward when fastening composite wood instead of letting it bulge out to the surface. The flat underside of the pancake head creates a strong hold without the need for a countersunk hole. The Torx drive handles more torque than slotted, Phillips, and hex 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	Rounded Head Profile	Approx. Threads per In.	Threading	Tapping Method	Tapping Screw Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				No. 10

				2 1/2"	0.317"	0.087"	3/32"	Narrow	9	Fully Threaded	Thread Cutting	17	25	98419A330	000000


				2 3/4"	0.266"	0.11"	3/32"	Narrow	13	Fully Threaded	Thread Cutting	17	25	98419A440	00000

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

These Torx screws join wood to sheet metal by drilling, tapping, and fastening in one go. Their self-drilling tip clears the way while their threads tap into the material. With a deep six-lobe opening, the Torx drive handles more torque than slotted, Phillips, and hex drives. The flat head deters snags.

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.	Drill Point Size	Drill Tip Lg.	For Wood Thk. Range	For Metal Thk. Range	Flat Head Profile	Approx. Threads per In.	Threading	Tapping Method	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				No. 10

				1"	0.48"	0.136"	No. 3	1/4"	0.25" to 0.375"	0.11" to 0.21"	Standard	16	Fully Threaded	Thread Forming	50	90425A460	000000


				1 1/4"	0.48"	0.136"	No. 3	1/4"	0.375" to 0.5"	0.11" to 0.21"	Standard	16	Fully Threaded	Thread Forming	50	90425A461	00000

Sealing Screws for Wood and Composite Wood

Prevent rot in roofs, decks, and outdoor posts. The rubber-backed washer in these screws keeps fluid out of fastened joints. They're made of stainless steel, so they won't degrade from chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as trim head screws, they exert less pressure on surfaces to curb splitting and distortion. 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						Washer
	Lg.	Dia.	Ht.	Drill Bit Size	Flat Head Profile	Approx. Threads per In.	Threading	OD	Thk.	Tapping Method	Tapping Screw Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel with Stainless Steel and Rubber Washer







				No. 7

				1"	0.23"	0.125"	1/16"	Standard	16	Partially Threaded	0.63"	0.2"	Thread Cutting	17	25	91540A100	000000


				1 5/8"	0.23"	0.125"	1/16"	Standard	16	Partially Threaded	0.63"	0.2"	Thread Cutting	17	25	91540A200	00000
				2 1/4"	0.23"	0.125"	1/16"	Standard	16	Partially Threaded	0.63"	0.2"	Thread Cutting	17	10	91540A300	00000
				3"	0.23"	0.125"	1/16"	Standard	16	Partially Threaded	0.63"	0.2"	Thread Cutting	17	10	91540A400	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