Security Tapping Screws | McMaster-Carr

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220 Products

About Tapping Screws

Compare drilling, pointed, thread-forming, and thread-cutting tips to find the best choice for your material.

Fastener Head Type

Rounded

The most common head type creates a finished look

149 products

Flat

Sit neatly in countersunk holes for a flush finish

86 products

Performance

Self-Piercing

Start a hole in sheet metal up to 0.050" thick

191 products

Corrosion Resistant

Won't rust in wet and outdoor environments

207 products

Tamper-Resistant Torx Stainless Steel Rounded Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Torx Stainless Steel Rounded Head Screws for Sheet Metal.

Prevent unauthorized access with screws that require a tamper-resistant Torx driver to remove. The deep, six-lobe recess (also known as pin-in-Torx) handles high torque to keep drivers from slipping and stripping the drive. These screws have a pointed tip that starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. Screws resist rust and have a rounded head to create a finished look.

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.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws										Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Drill Bit Size	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				No. 4 Screw Size

				3/8"	0.206"	0.055"	AB	T8	24	3/32"	25	95638A321	000000	7233A61	00000


				1/2"	0.206"	0.055"	AB	T8	24	3/32"	25	95638A322	00000	7233A61	0000
				5/8"	0.206"	0.055"	AB	T8	24	3/32"	25	95638A323	00000	7233A61	0000
				3/4"	0.206"	0.055"	AB	T8	24	3/32"	25	95638A324	00000	7233A61	0000




						No. 6 Screw Size

						3/8"	0.255"	0.07"	AB	T10	20	7/64"	25	95638A325	00000	7233A63	0000


						1/2"	0.262"	0.073"	AB	T10	18	32 Ga.	25	95638A148	00000	7233A63	0000
						5/8"	0.255"	0.07"	AB	T10	20	7/64"	25	95638A326	00000	7233A63	0000
						3/4"	0.262"	0.073"	AB	T10	18	32 Ga.	25	95638A151	00000	7233A63	0000
						1"	0.262"	0.073"	AB	T10	18	32 Ga.	25	95638A153	00000	7233A63	0000
						1 1/4"	0.255"	0.07"	AB	T10	20	7/64"	25	95638A327	00000	7233A63	0000
						1 1/2"	0.262"	0.073"	AB	T10	18	32 Ga.	25	95638A155	00000	7233A63	0000




								No. 8 Screw Size

								3/8"	0.307"	0.085"	AB	T15	18	1/8"	25	95638A328	00000	7233A64	0000


								1/2"	0.312"	0.087"	AB	T15	15	29 Ga.	25	95638A194	00000	7233A64	0000
								5/8"	0.307"	0.085"	AB	T15	18	1/8"	25	95638A329	00000	7233A64	0000
								3/4"	0.312"	0.087"	AB	T15	15	29 Ga.	25	95638A197	00000	7233A64	0000
								1"	0.312"	0.087"	AB	T15	15	29 Ga.	25	95638A199	00000	7233A64	0000
								1 1/4"	0.312"	0.087"	AB	T15	15	29 Ga.	25	95638A201	00000	7233A64	0000
								1 1/2"	0.312"	0.087"	AB	T15	15	29 Ga.	25	95638A205	00000	7233A64	0000
								2"	0.307"	0.085"	AB	T15	18	1/8"	25	95638A331	00000	7233A64	0000




										No. 10 Screw Size

										1/2"	0.361"	0.101"	AB	T25	12	21 Ga.	25	95638A242	00000	7233A66	0000


										5/8"	0.355"	0.1"	AB	T25	16	9/64"	25	95638A332	00000	7233A66	0000
										3/4"	0.361"	0.101"	AB	T25	12	21 Ga.	25	95638A245	00000	7233A66	0000
										1"	0.361"	0.101"	AB	T25	12	21 Ga.	25	95638A247	00000	7233A66	0000
										1 1/4"	0.361"	0.101"	AB	T25	12	21 Ga.	25	95638A249	00000	7233A66	0000
										1 1/2"	0.361"	0.101"	AB	T25	12	21 Ga.	10	95638A251	00000	7233A66	0000
										2"	0.355"	0.1"	AB	T25	16	9/64"	10	95638A333	00000	7233A66	0000




	No. 12 Screw Size

	3/4"										0.41"	0.11"	AB	T25	14	5/32"	10	95638A334	0000	7233A66	0000


	1"	0.41"									0.11"	AB	T25	14	5/32"	10	95638A335	0000	7233A66	0000
	1 1/4"	0.41"	0.11"								AB	T25	14	5/32"	10	95638A336	00000	7233A66	0000
	1 1/2"	0.41"	0.11"								AB	T25	14	5/32"	10	95638A337	00000	7233A66	0000




			No. 14 Screw Size

			1/2"								0.437"	0.132"	AB	T27	10	5.5 mm	10	95638A313	00000	7233A67	0000


			3/4"								0.437"	0.132"	AB	T27	10	5.5 mm	10	95638A314	00000	7233A67	0000
			1"	0.437"							0.132"	AB	T27	10	5.5 mm	10	95638A315	00000	7233A67	0000
			1 1/2"	0.437"	0.132"						AB	T27	10	5.5 mm	10	95638A317	00000	7233A67	0000
			2"	0.43"	0.13"						AB	T27	14	3/16"	10	95638A338	00000	7233A67	0000

Tamper-Resistant Torx Stainless Steel Flat Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Torx Stainless Steel Flat Head Screws for Sheet Metal.

Attach components with countersunk holes to sheet metal and discourage tampering. With a security pin in the drive, these corrosion-resistant screws require a tamper-resistant Torx driver to remove. The deep, six-lobe recess handles high torque to avoid slipping and stripping the drive. Screws have a flat, beveled head to sit flush with surfaces. Their pointed tip starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first.

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.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws												Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Countersink Angle	Flat Head Profile	Drill Bit Size, mm	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				No. 6 Screw Size

				1/2"	0.257"	0.097"	AB	T15	18	82°	Standard	32 Ga.	25	95015A292	000000	7233A64	00000


				5/8"	0.277"	0.097"	AB	T15	18	82°	Standard	32 Ga.	25	95015A271	00000	7233A64	0000
				3/4"	0.257"	0.097"	AB	T15	18	82°	Standard	32 Ga.	25	95015A294	00000	7233A64	0000
				1"	0.257"	0.097"	AB	T15	18	82°	Standard	32 Ga.	25	95015A296	00000	7233A64	0000
				1 1/2"	0.277"	0.097"	AB	T15	18	82°	Standard	32 Ga.	25	95015A272	00000	7233A64	0000




						No. 8 Screw Size

						1/2"	0.307"	0.112"	AB	T20	15	82°	Standard	29 Ga.	25	95015A298	00000	7233A65	0000


						5/8"	0.327"	0.112"	AB	T20	15	82°	Standard	29 Ga.	25	95015A273	00000	7233A65	0000
						3/4"	0.307"	0.112"	AB	T20	15	82°	Standard	29 Ga.	25	95015A301	00000	7233A65	0000
						1"	0.307"	0.112"	AB	T20	15	82°	Standard	29 Ga.	25	95015A303	00000	7233A65	0000
						1 1/4"	0.307"	0.112"	AB	T20	15	82°	Standard	29 Ga.	25	95015A305	00000	7233A65	0000
						1 1/2"	0.327"	0.112"	AB	T20	15	82°	Standard	29 Ga.	10	95015A274	0000	7233A65	0000
						1 3/4"	0.327"	0.112"	AB	T20	15	82°	Standard	29 Ga.	10	95015A275	0000	7233A65	0000
						2"	0.327"	0.112"	AB	T20	15	82°	Standard	29 Ga.	10	95015A276	0000	7233A65	0000




								No. 10 Screw Size

								1/2"	0.357"	0.127"	AB	T25	12	82°	Standard	21 Ga.	25	95015A450	00000	7233A66	0000


								3/4"	0.357"	0.127"	AB	T25	12	82°	Standard	21 Ga.	25	95015A307	00000	7233A66	0000
								1"	0.357"	0.127"	AB	T25	12	82°	Standard	21 Ga.	25	95015A309	00000	7233A66	0000
								1 1/4"	0.378"	0.127"	AB	T25	12	82°	Standard	21 Ga.	10	95015A277	0000	7233A66	0000
								1 1/2"	0.357"	0.127"	AB	T25	12	82°	Standard	21 Ga.	10	95015A313	0000	7233A66	0000




										No. 14 Screw Size

										5/8"	0.531"	0.161"	AB	T30	14	82°	Standard	4 Ga.	10	95015A278	0000	7233A68	0000


										3/4"	0.531"	0.161"	AB	T30	14	82°	Standard	4 Ga.	10	95015A279	00000	7233A68	0000
										1"	0.531"	0.161"	AB	T30	14	82°	Standard	4 Ga.	10	95015A281	00000	7233A68	0000
										1 1/4"	0.531"	0.161"	AB	T30	14	82°	Standard	4 Ga.	10	95015A282	00000	7233A68	0000
										1 1/2"	0.531"	0.161"	AB	T30	14	82°	Standard	4 Ga.	10	95015A283	00000	7233A68	0000




												1/4" Screw Size

3/4"												0.472"	0.161"	AB	T30	10	82°	Standard	5.5	10	95015A314	0000	7233A68	0000


1"	0.472"											0.161"	AB	T30	10	82°	Standard	5.5	10	95015A620	00000	7233A68	0000
1 1/4"	0.472"											0.161"	AB	T30	10	82°	Standard	5.5	10	95015A315	00000	7233A68	0000

Tamper-Resistant Torx Steel Flat Head Drilling Screws

Drill and fasten components with countersunk holes and deter tampering. These screws have a deep, six-lobe recess (also known as pin-in-Torx) that turns only with a tamper-resistant Torx driver. Their flat, beveled head sits flush with surfaces.

Length is measured from the top of the head.

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

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws														Power Tools Bits
		Drill Tip		Head
	Lg.	Point Size	Lg.	Dia.	Ht.	Max. Drilling Thk.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Countersink Angle	Flat Head Profile	Pkg. Qty.		Pkg.		Each
Zinc-Plated Steel







				No. 8 Screw Size

				1/2"	No. 2	3/16"	0.312"	0.1"	0.098"	B	T15	18	82°	Standard	50	94625A111	000000	7233A64	00000


				3/4"	No. 2	3/16"	0.312"	0.1"	0.098"	B	T15	18	82°	Standard	50	94625A112	00000	7233A64	0000
				1"	No. 2	3/16"	0.312"	0.1"	0.098"	B	T15	18	82°	Standard	50	94625A113	00000	7233A64	0000
				1 1/4"	No. 2	3/16"	0.312"	0.1"	0.098"	B	T15	18	82°	Standard	50	94625A315	00000	7233A64	0000
				1 1/2"	No. 2	3/16"	0.312"	0.1"	0.098"	B	T15	18	82°	Standard	50	94625A114	00000	7233A64	0000




						No. 10 Screw Size

						1/2"	No. 2	3/16"	0.362"	0.081"	0.098"	B	T20	16	82°	Standard	50	94625A121	00000	7233A65	0000


						3/4"	No. 3	1/4"	0.362"	0.116"	0.15"	B	T20	16	82°	Standard	50	94625A423	00000	7233A65	0000
						1"	No. 3	1/4"	0.362"	0.116"	0.15"	B	T20	16	82°	Standard	50	94625A122	00000	7233A65	0000
						1 1/2"	No. 3	1/4"	0.362"	0.116"	0.15"	B	T20	16	82°	Standard	50	94625A425	00000	7233A65	0000
						2"	No. 3	1/4"	0.362"	0.116"	0.15"	B	T20	16	82°	Standard	25	94625A427	00000	7233A65	0000




								No. 14 Screw Size

								1"	No. 3	11/32"	0.477"	0.153"	0.21"	B	T27	14	82°	Standard	25	94625A131	00000	7233A67	0000


								1 1/2"	No. 3	11/32"	0.477"	0.153"	0.21"	B	T27	14	82°	Standard	25	94625A132	00000	7233A67	0000
								2"	No. 3	11/32"	0.477"	0.153"	0.21"	B	T27	14	82°	Standard	25	94625A133	00000	7233A67	0000

Tamper-Resistant Torx Stainless Steel Rounded Head Drilling Screws

Removable only with a tamper-resistant Torx driver, these screws drill and fasten in one step. The deep, six-lobe recess (also known as pin-in-Torx) prevents drivers from slipping and deters unauthorized access. These screws resist corrosion and have a rounded head to create a finished look.

Length is measured from under the head.

410 Stainless Steel—Tougher and more wear resistant than other stainless steel screws but less corrosion resistant.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws												Power Tools Bits
		Drill Tip		Head
	Lg.	Point Size	Lg.	Dia.	Ht.	Max. Drilling Thk.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Pkg. Qty.		Pkg.		Each
410 Stainless Steel







				No. 8 Screw Size

				1/2"	No. 2	3/16"	0.322"	0.115"	0.098"	AB	T20	18	25	92970A201	00000	7233A65	00000


				3/4"	No. 2	3/16"	0.322"	0.115"	0.098"	AB	T20	18	25	92970A203	0000	7233A65	0000
				1"	No. 2	3/16"	0.322"	0.115"	0.098"	AB	T20	18	10	92970A205	0000	7233A65	0000
				1 1/4"	No. 2	3/16"	0.322"	0.115"	0.098"	AB	T20	18	10	92970A208	0000	7233A65	0000
				1 1/2"	No. 2	3/16"	0.322"	0.115"	0.098"	AB	T20	18	10	92970A227	0000	7233A65	0000




						No. 10 Screw Size

						1/2"	No. 2	13/64"	0.373"	0.133"	0.106"	AB	T25	16	10	92970A209	0000	7233A66	0000


						3/4"	No. 2	13/64"	0.373"	0.133"	0.106"	AB	T25	16	10	92970A211	0000	7233A66	0000
						1"	No. 2	13/64"	0.373"	0.133"	0.106"	AB	T25	16	10	92970A213	0000	7233A66	0000
						1 1/4"	No. 2	13/64"	0.373"	0.133"	0.106"	AB	T25	16	10	92970A216	0000	7233A66	0000
						1 1/2"	No. 2	13/64"	0.373"	0.133"	0.106"	AB	T25	16	10	92970A218	0000	7233A66	0000




								No. 12 Screw Size

								1"	No. 3	9/32"	0.425"	0.156"	0.187"	AB	T27	14	10	92970A221	0000	7233A67	0000


								1 1/2"	No. 3	9/32"	0.425"	0.156"	0.187"	AB	T27	14	10	92970A222	0000	7233A67	0000
								2"	No. 3	9/32"	0.425"	0.156"	0.187"	AB	T27	14	10	92970A223	0000	7233A67	0000




										No. 14 Screw Size

										1"	No. 3	11/32"	0.492"	0.175"	0.21"	AB	T30	14	10	92970A224	0000	7233A68	0000


										1 1/2"	No. 3	11/32"	0.492"	0.175"	0.21"	AB	T30	14	10	92970A225	0000	7233A68	0000
										2"	No. 3	11/32"	0.492"	0.175"	0.21"	AB	T30	14	10	92970A226	0000	7233A68	0000

Tamper-Resistant Hex Stainless Steel Rounded Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Hex Stainless Steel Rounded Head Screws for Sheet Metal.

Deter unauthorized access with screws that require a tamper-resistant hex driver to remove. A deep six-point recess with a security pin handles high torque to keep drivers from slipping and stripping the drive. These screws are also known as pin-in-hex and pin-in-socket. They have a pointed tip to start holes in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. Screws resist corrosion and have a rounded head for a finished look.

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.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws										Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Drill Bit Size, mm	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				No. 6 Screw Size

				1/2"	0.282"	0.073"	AB	1/8"	18	32 Ga.	25	96612A140	000000	7240A33	00000


				3/4"	0.282"	0.073"	AB	1/8"	18	32 Ga.	25	96612A145	00000	7240A33	0000
				1"	0.282"	0.073"	AB	1/8"	18	32 Ga.	25	96612A150	00000	7240A33	0000




						No. 8 Screw Size

						1/2"	0.312"	0.087"	AB	5/32"	15	29 Ga.	25	96612A205	00000	7240A35	0000


						5/8"	0.312"	0.087"	AB	5/32"	15	29 Ga.	25	96612A210	00000	7240A35	0000
						3/4"	0.312"	0.087"	AB	5/32"	15	29 Ga.	25	96612A215	0000	7240A35	0000
						1"	0.312"	0.087"	AB	5/32"	15	29 Ga.	25	96612A220	0000	7240A35	0000
						1 1/4"	0.312"	0.087"	AB	5/32"	15	29 Ga.	25	96612A225	00000	7240A35	0000
						1 1/2"	0.312"	0.087"	AB	5/32"	15	29 Ga.	25	96612A230	00000	7240A35	0000




								No. 10 Screw Size

								1/2"	0.361"	0.101"	AB	5/32"	12	21 Ga.	25	96612A250	0000	7240A35	0000


								3/4"	0.361"	0.101"	AB	5/32"	12	21 Ga.	25	96612A260	00000	7240A35	0000
								1"	0.361"	0.101"	AB	5/32"	12	21 Ga.	25	96612A265	00000	7240A35	0000
								1 1/4"	0.361"	0.101"	AB	5/32"	12	21 Ga.	25	96612A270	00000	7240A35	0000
								1 1/2"	0.361"	0.101"	AB	5/32"	12	21 Ga.	25	96612A275	00000	7240A35	0000
								2"	0.361"	0.101"	AB	5/32"	12	21 Ga.	25	96612A280	00000	7240A35	0000




										No. 14 Screw Size

										3/4"	0.437"	0.132"	AB	5/32"	10	5.5	25	96612A320	00000	7240A35	0000


										1"	0.437"	0.132"	AB	5/32"	10	5.5	25	96612A325	00000	7240A35	0000
										1 1/2"	0.437"	0.132"	AB	5/32"	10	5.5	10	96612A335	0000	7240A35	0000

Tamper-Resistant Drilled Spanner Stainless Steel Rounded Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Drilled Spanner Stainless Steel Rounded Head Screws for Sheet Metal.

A two-hole drive deters tampering and a rounded head creates a finished look. Also known as pig-nose screws, these turn only with a drilled spanner driver. The two contact points won’t withstand much torque, so they’re best for light duty fastening. The pointed tip starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. These screws resist corrosion.

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.

Screwdriver Bits—Turn screws by hand for more control and less chance of overtightening compared to power tools.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws										Screwdriver Bits		Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Drill Bit Size	Pkg. Qty.		Pkg.		Each		Each
18-8 Stainless Steel







				No. 6 Screw Size

				1/2"	0.27"	0.082"	AB	No. 6	18	32 Ga.	25	94065A148	00000	52775A21	00000	7230A56	00000


				3/4"	0.27"	0.082"	AB	No. 6	18	32 Ga.	25	94065A151	0000	52775A21	0000	7230A56	0000
				1"	0.27"	0.082"	AB	No. 6	18	32 Ga.	25	94065A153	0000	52775A21	0000	7230A56	0000
				1 1/2"	0.27"	0.082"	AB	No. 6	18	32 Ga.	25	94065A157	0000	52775A21	0000	7230A56	0000




						No. 8 Screw Size

						3/8"	0.322"	0.096"	AB	No. 8	15	29 Ga.	25	94065A192	0000	52775A22	0000	7230A57	0000


						1/2"	0.322"	0.096"	AB	No. 8	15	29 Ga.	25	94065A194	0000	52775A22	0000	7230A57	0000
						3/4"	0.322"	0.096"	AB	No. 8	15	29 Ga.	25	94065A197	0000	52775A22	0000	7230A57	0000
						1"	0.322"	0.096"	AB	No. 8	15	29 Ga.	25	94065A199	0000	52775A22	0000	7230A57	0000
						1 1/2"	0.322"	0.096"	AB	No. 8	15	29 Ga.	25	94065A203	00000	52775A22	0000	7230A57	0000
						2"	0.322"	0.096"	AB	No. 8	15	29 Ga.	25	94065A205	00000	52775A22	0000	7230A57	0000




								No. 10 Screw Size

								1/2"	0.373"	0.11"	AB	No. 10	12	21 Ga.	25	94065A242	0000	52775A23	0000	7230A58	0000


								3/4"	0.373"	0.11"	AB	No. 10	12	21 Ga.	25	94065A245	0000	52775A23	0000	7230A58	0000
								1"	0.373"	0.11"	AB	No. 10	12	21 Ga.	25	94065A247	0000	52775A23	0000	7230A58	0000
								1 1/4"	0.373"	0.11"	AB	No. 10	12	21 Ga.	25	94065A249	00000	52775A23	0000	7230A58	0000
								1 1/2"	0.373"	0.11"	AB	No. 10	12	21 Ga.	25	94065A251	00000	52775A23	0000	7230A58	0000
								2"	0.373"	0.11"	AB	No. 10	12	21 Ga.	10	94065A253	0000	52775A23	0000	7230A58	0000




										No. 12 Screw Size

										1"	0.425"	1/8"	AB	No. 12	11	3/16"	25	94065A296	00000	52775A24	0000	7230A59	0000


										1 1/2"	0.425"	1/8"	AB	No. 12	11	3/16"	25	94065A299	00000	52775A24	0000	7230A59	0000
										2"	0.425"	1/8"	AB	No. 12	11	3/16"	10	94065A301	0000	52775A24	0000	7230A59	0000




												No. 14 Screw Size

												3/4"	0.492"	0.144"	AB	No. 14	10	5.5 mm	25	94065A313	00000	52775A33	0000	7230A44	0000


												1"	0.492"	0.144"	AB	No. 14	10	5.5 mm	10	94065A315	0000	52775A33	0000	7230A44	0000
2"												0.492"	0.144"	AB	No. 14	10	5.5 mm	10	94065A319	0000	52775A33	0000	7230A44	0000

Tamper-Resistant Hex Stainless Steel Flat Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Hex Stainless Steel Flat Head Screws for Sheet Metal.

Prevent unauthorized removal of screws fastened into countersunk holes. The deep six-point recess (also known as pin-in-hex and pin-in-socket) works only with tamper-resistant hex drivers. These screws also handle high torque to keep drivers from slipping and stripping the drive. They have a flat, beveled head to sit flush with surfaces. The pointed tip starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. Made of stainless steel, these screws resist corrosion.

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.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws												Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Countersink Angle	Flat Head Profile	Drill Bit Size, mm	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				No. 6 Screw Size

				1/2"	0.307"	0.097"	AB	1/8"	18	82°	Standard	32 Ga.	25	95829A150	000000	7240A33	00000


				3/4"	0.307"	0.097"	AB	1/8"	18	82°	Standard	32 Ga.	25	95829A155	00000	7240A33	0000
				1"	0.307"	0.097"	AB	1/8"	18	82°	Standard	32 Ga.	25	95829A160	00000	7240A33	0000




						No. 8 Screw Size

						1/2"	0.359"	0.112"	AB	5/32"	15	82°	Standard	29 Ga.	25	95829A205	00000	7240A35	0000


						3/4"	0.359"	0.112"	AB	5/32"	15	82°	Standard	29 Ga.	25	95829A215	00000	7240A35	0000
						1"	0.359"	0.112"	AB	5/32"	15	82°	Standard	29 Ga.	25	95829A220	00000	7240A35	0000




								No. 10 Screw Size

								1/2"	0.411"	0.127"	AB	5/32"	12	82°	Standard	21 Ga.	25	95829A250	00000	7240A35	0000


								3/4"	0.411"	0.127"	AB	5/32"	12	82°	Standard	21 Ga.	25	95829A260	00000	7240A35	0000
								1"	0.411"	0.127"	AB	5/32"	12	82°	Standard	21 Ga.	25	95829A265	00000	7240A35	0000
								1 1/4"	0.411"	0.127"	AB	5/32"	12	82°	Standard	21 Ga.	25	95829A270	00000	7240A35	0000
								1 1/2"	0.411"	0.127"	AB	5/32"	12	82°	Standard	21 Ga.	25	95829A275	00000	7240A35	0000




										No. 14 Screw Size

										3/4"	0.531"	0.161"	AB	5/32"	10	82°	Standard	5.5	10	95829A350	0000	7240A35	0000


										1"	0.531"	0.161"	AB	5/32"	10	82°	Standard	5.5	10	95829A355	0000	7240A35	0000
										1 1/4"	0.531"	0.161"	AB	5/32"	10	82°	Standard	5.5	10	95829A360	0000	7240A35	0000
										1 1/2"	0.531"	0.161"	AB	5/32"	10	82°	Standard	5.5	10	95829A365	0000	7240A35	0000

Tamper-Resistant Drilled-Spanner Stainless Steel Flat Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Drilled-Spanner Stainless Steel Flat Head Screws for Sheet Metal.

A two-hole drive deters tampering with screws that install in countersunk holes. Also known as pig-nose screws, these require a drilled spanner driver to turn them. However, the two contact points won’t withstand much torque, so they’re best for light duty fastening. They have a flat, beveled head to sit flush with surfaces. The pointed tip starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. Made of stainless steel, these screws resist corrosion.

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.

Screwdriver Bits—Turn screws by hand for more control and less chance of overtightening compared to power tools.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws												Screwdriver Bits		Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Countersink Angle	Flat Head Profile	Drill Bit Size	Pkg. Qty.		Pkg.		Each		Each
18-8 Stainless Steel







				No. 6 Screw Size

				1/2"	0.279"	0.083"	AB	No. 6	18	82°	Standard	32 Ga.	25	95115A115	00000	52775A21	00000	7230A56	00000


				3/4"	0.279"	0.083"	AB	No. 6	18	82°	Standard	32 Ga.	25	95115A117	0000	52775A21	0000	7230A56	0000
				1"	0.279"	0.083"	AB	No. 6	18	82°	Standard	32 Ga.	25	95115A119	0000	52775A21	0000	7230A56	0000




						No. 8 Screw Size

						1/2"	0.332"	0.1"	AB	No. 8	15	82°	Standard	29 Ga.	25	95115A120	0000	52775A22	0000	7230A57	0000


						3/4"	0.332"	0.1"	AB	No. 8	15	82°	Standard	29 Ga.	25	95115A122	0000	52775A22	0000	7230A57	0000
						1"	0.332"	0.1"	AB	No. 8	15	82°	Standard	29 Ga.	25	95115A124	0000	52775A22	0000	7230A57	0000
						1 1/4"	0.332"	0.1"	AB	No. 8	15	82°	Standard	29 Ga.	25	95115A125	00000	52775A22	0000	7230A57	0000
						1 1/2"	0.332"	0.1"	AB	No. 8	15	82°	Standard	29 Ga.	25	95115A205	00000	52775A22	0000	7230A57	0000




								No. 10 Screw Size

								1/2"	0.385"	0.116"	AB	No. 10	12	82°	Standard	21 Ga.	25	95115A225	0000	52775A23	0000	7230A58	0000


								3/4"	0.385"	0.116"	AB	No. 10	12	82°	Standard	21 Ga.	25	95115A126	00000	52775A23	0000	7230A58	0000
								1"	0.385"	0.116"	AB	No. 10	12	82°	Standard	21 Ga.	25	95115A128	00000	52775A23	0000	7230A58	0000
								1 1/2"	0.385"	0.116"	AB	No. 10	12	82°	Standard	21 Ga.	25	95115A130	00000	52775A23	0000	7230A58	0000
								2"	0.385"	0.116"	AB	No. 10	12	82°	Standard	21 Ga.	25	95115A135	00000	52775A23	0000	7230A58	0000




										No. 12 Screw Size

										1"	0.412"	0.132"	AB	No. 12	11	82°	Standard	3/16"	25	95115A150	00000	52775A24	0000	7230A59	0000


										1 1/4"	0.412"	0.132"	AB	No. 12	11	82°	Standard	3/16"	25	95115A155	00000	52775A24	0000	7230A59	0000
										1 1/2"	0.412"	0.132"	AB	No. 12	11	82°	Standard	3/16"	25	95115A160	00000	52775A24	0000	7230A59	0000
										2"	0.412"	0.132"	AB	No. 12	11	82°	Standard	3/16"	10	95115A165	0000	52775A24	0000	7230A59	0000

Tamper-Resistant One-Way Stainless Steel Rounded Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant One-Way Stainless Steel Rounded Head Screws for Sheet Metal.

Simple to install but hard to remove, these screws tighten with a common slotted driver. Once installed, the drive is difficult to turn with anything other than a one-way screw remover. Screws have a pointed tip that starts a hole in sheets up to 0.025" thick, but for thicker material you’ll need to drill first. These screws resist corrosion and have a rounded head for a finished look.

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.

One-Way Screw Removers—With two pins on the end, these tools grip one-way screws to loosen them when slotted drivers just slip.

	Tapping Screws									One-Way Screw Removers
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Approx. Threads per In.	Drill Bit Size	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				No. 6 Screw Size

				3/8"	0.262"	0.104"	AB	18	32 Ga.	100	90090A145	000000	7392A52	000000


				1/2"	0.26"	0.103"	AB	18	32 Ga.	100	90090A148	00000	7392A52	00000
				3/4"	0.26"	0.103"	AB	18	32 Ga.	100	90090A151	00000	7392A52	00000
				1"	0.26"	0.103"	AB	18	32 Ga.	50	90090A153	00000	7392A52	00000




						No. 8 Screw Size

						3/8"	0.312"	0.123"	AB	15	29 Ga.	50	90090A191	00000	7392A52	00000


						1/2"	0.309"	0.12"	AB	15	29 Ga.	50	90090A194	00000	7392A52	00000
						3/4"	0.309"	0.12"	AB	15	29 Ga.	50	90090A197	00000	7392A52	00000
						1"	0.309"	0.12"	AB	15	29 Ga.	50	90090A199	00000	7392A52	00000
						1 1/4"	0.309"	0.12"	AB	15	29 Ga.	50	90090A201	00000	7392A52	00000
						1 1/2"	0.309"	0.12"	AB	15	29 Ga.	50	90090A203	0000	7392A52	00000




								No. 10 Screw Size

								1/2"	0.359"	0.137"	AB	12	21 Ga.	50	90090A242	00000	7392A52	00000


								3/4"	0.359"	0.137"	AB	12	21 Ga.	50	90090A245	00000	7392A52	00000
								1"	0.359"	0.137"	AB	12	21 Ga.	50	90090A247	00000	7392A52	00000
								1 1/2"	0.359"	0.137"	AB	12	21 Ga.	50	90090A251	00000	7392A52	00000
								2"	0.359"	0.137"	AB	12	21 Ga.	25	90090A253	00000	7392A52	00000




										No. 12 Screw Size

										1"	0.425"	1/8"	A	11	3/16"	25	90090A296	0000	7392A52	00000


										1 1/2"	0.425"	1/8"	A	11	3/16"	25	90090A299	00000	7392A52	00000
										2"	0.425"	1/8"	A	11	3/16"	25	90090A300	00000	7392A52	00000




												No. 14 Screw Size

												1/2"	0.472"	0.175"	AB	10	5.5 mm	50	90090A310	00000	7392A52	00000


												3/4"	0.472"	0.175"	AB	10	5.5 mm	25	90090A313	00000	7392A52	00000
												1"	0.472"	0.175"	AB	10	5.5 mm	25	90090A315	00000	7392A52	00000
1 1/2"												0.472"	0.175"	AB	10	5.5 mm	25	90090A317	00000	7392A52	00000
2"	0.472"											0.175"	AB	10	5.5 mm	25	90090A319	00000	7392A52	00000
3"	0.472"											0.175"	AB	10	5.5 mm	10	90090A323	00000	7392A52	00000

Tamper-Resistant Tri-Wing® Stainless Steel Rounded Head Screws for Sheet Metal

Image of Product. Front orientation. Contains MultipleImages. Tapping Screws. Tamper-Resistant Tri-Wing® Stainless Steel Rounded Head Screws for Sheet Metal.

Prevent tampering with screws that turn only with a Tri-Wing® driver. The three offset slots handle high torque to prevent slipping and damaging the drive. These screws have a pointed tip that starts a hole in sheet metal up to 0.025" thick, but for thicker material you’ll need to drill first. Screws resist corrosion and have a rounded head for a finished look.

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.

Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.

	Tapping Screws										Power Tools Bits
		Head
	Lg.	Dia.	Ht.	Tapping Screw Type	Drive Size	Approx. Threads per In.	Drill Bit Size	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				No. 6 Screw Size

				1/2"	0.27"	0.082"	A	No. 3	18	32 Ga.	50	95641A148	000000	53265A314	00000


				3/4"	0.27"	0.082"	A	No. 3	18	32 Ga.	50	95641A151	00000	53265A314	0000
				1"	0.27"	0.082"	A	No. 3	18	32 Ga.	25	95641A153	0000	53265A314	0000




						No. 8 Screw Size

						1/2"	0.322"	0.096"	A	No. 4	15	29 Ga.	50	95641A194	00000	53265A315	0000


						3/4"	0.322"	0.096"	A	No. 4	15	29 Ga.	50	95641A197	00000	53265A315	0000
						1"	0.322"	0.096"	A	No. 4	15	29 Ga.	50	95641A199	00000	53265A315	0000
						1 1/4"	0.322"	0.096"	A	No. 4	15	29 Ga.	25	95641A201	0000	53265A315	0000
						1 1/2"	0.322"	0.096"	A	No. 4	15	29 Ga.	25	95641A205	00000	53265A315	0000




								No. 10 Screw Size

								1/2"	0.373"	0.11"	A	No. 5	12	21 Ga.	50	95641A242	00000	53265A316	0000


								3/4"	0.373"	0.11"	A	No. 5	12	21 Ga.	25	95641A245	0000	53265A316	0000
								1"	0.373"	0.11"	A	No. 5	12	21 Ga.	25	95641A247	0000	53265A316	0000