Flat-Head Masonry And Concrete Screws

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64 Products

Flat Head Tapping Screws for Masonry and Concrete

Beveled under the head, these screws give you a flush finish in countersunk holes. They’re also known as Tapcons. To create a pilot hole, use a hammer drill or rotary hammer and a compatible bit. Pull-out strength and shear strength values are 25% of the ultimate values.

Corrosion-Resistant-Coated Steel—Won’t rust in wet environments but are less corrosion resistant than stainless steel screws.

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

18-8 Stainless Steel—The best choice for wet and outdoor environments. These screws have a stainless steel head to resist corrosion and a hardened steel point and threads to penetrate concrete.

					Head		Strength, lbf
	Lg.	Drill Bit Size	Thread Lg.	Min. Installation Dp.	Dia.	Ht.	Pull-Out	Shear	Conditions Tested In	Drive Style	Countersink Angle	Pkg. Qty.		Pkg.
Blue Corrosion-Resistant-Coated Steel







				3/16" Screw Size

				1 1/4"	5/32"	1 3/32"	1"	3/8"	0.16"	150	180	3,000 psi Concrete	Torx	82°	50	90161A812	000000


				1 3/4"	5/32"	1 19/32"	1"	3/8"	0.16"	150	180	3,000 psi Concrete	Torx	82°	50	90161A725	00000
				2 1/4"	5/32"	1 5/8"	1"	3/8"	0.16"	150	180	3,000 psi Concrete	Torx	82°	50	90161A827	00000
				2 3/4"	5/32"	1 5/8"	1"	3/8"	—	150	180	3,000 psi Concrete	Torx	82°	50	90161A102	00000
				3 1/4"	5/32"	1 5/8"	1"	3/8"	0.16"	150	180	3,000 psi Concrete	Torx	82°	25	90161A831	00000




						1/4" Screw Size

						1 1/4"	3/16"	1 3/64"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	50	90161A844	00000


						1 3/4"	3/16"	1 35/64"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	50	90161A848	00000
						2 1/4"	3/16"	1 5/8"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	50	90161A851	00000
						2 3/4"	3/16"	1 5/8"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	25	90161A853	00000
						3 1/4"	3/16"	1 5/8"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	25	90161A855	00000
						3 3/4"	3/16"	1 5/8"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	25	90161A658	00000
						4"	3/16"	1 5/8"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	25	90161A859	00000
						5"	3/16"	1 5/8"	1"	1/2"	0.21"	190	225	3,000 psi Concrete	Torx	82°	10	90161A775	00000
						6"	3/16"	1 5/8"	1"	1/2"	0.208"	190	225	3,000 psi Concrete	Torx	82°	10	90161A103	00000


						Silver Corrosion-Resistant-Coated Steel







										3/16" Screw Size

										1 3/4"	5/32"	1 1/2"	1"	3/8"	0.141"	100	150	3,000 psi Concrete	Torx	82°	50	90161A307	00000


										2 1/4"	5/32"	1 7/8"	1"	3/8"	0.141"	150	160	3,000 psi Concrete	Torx	82°	50	90161A415	00000




												5/16" Screw Size

												2 1/4"	1/4"	1 3/4"	1"	9/16"	0.203"	170	210	3,500 psi Concrete	Torx	82°	25	90161A396	00000


												2 3/4"	1/4"	1 1/2"	1"	9/16"	0.203"	170	210	3,500 psi Concrete	Torx	82°	25	90161A399	00000


												410 Stainless Steel







		3/16" Screw Size

		1 3/4"	5/32"											1 1/2"	1"	0.36"	—	155	180	3,000 psi Concrete	Phillips	82°	10	90950A153	0000


		2 1/4"	5/32"											1 5/8"	1"	0.36"	—	155	180	3,000 psi Concrete	Phillips	82°	10	90950A154	00000
		2 3/4"	5/32"											1 5/8"	1"	0.36"	—	155	180	3,000 psi Concrete	Phillips	82°	10	90950A155	00000




														1/4" Screw Size

														1 1/4"	3/16"	1"	1"	0.48"	—	190	225	3,000 psi Concrete	Phillips	82°	10	90950A105	00000


				1 3/4"	3/16"									1 5/8"	1"	0.48"	—	190	225	3,000 psi Concrete	Phillips	82°	10	90950A106	00000
				2 1/4"	3/16"									1 5/8"	1"	0.48"	—	190	225	3,000 psi Concrete	Phillips	82°	10	90950A107	00000
				2 3/4"	3/16"									1 5/8"	1"	0.48"	—	190	225	3,000 psi Concrete	Phillips	82°	10	90950A108	00000
				3 1/4"	3/16"									2 1/8"	1"	0.48"	—	190	225	3,000 psi Concrete	Phillips	82°	5	90950A151	00000
				3 3/4"	3/16"									2 1/8"	1"	0.48"	—	190	225	3,000 psi Concrete	Phillips	82°	5	90950A152	00000


				18-8 Stainless Steel







																1/4" Screw Size

						1 1/4"										3/16"	1 1/8"	1"	13/32"	3/16"	110	195	2,000 psi Concrete	Torx	82°	5	90161A501	0000


						1 3/4"	3/16"									1 5/8"	1"	13/32"	3/16"	110	195	2,000 psi Concrete	Torx	82°	5	90161A502	0000
						2 1/4"	3/16"									1 7/8"	1"	13/32"	3/16"	110	195	2,000 psi Concrete	Torx	82°	5	90161A503	00000
						2 3/4"	3/16"	1 7/8"								1"	13/32"	3/16"	110	195	2,000 psi Concrete	Torx	82°	5	90161A504	00000
						3 1/4"	3/16"	1 7/8"	1"							13/32"	3/16"	110	195	2,000 psi Concrete	Torx	82°	5	90161A505	00000
						4"	3/16"	1 7/8"	1"							13/32"	3/16"	110	195	2,000 psi Concrete	Torx	82°	5	90161A506	00000

Installation Tools

Drill holes and install tapping screws without changing bits to save time. The drive sleeve disengages once the screw is in place, so you can’t overtighten.

Includes		Each
Drill Adapter 1/2" dia. × 6" lg. Drive Sleeve 3/16" Hex Socket 1/4" Hex Socket Phillips/Torx Socket T25 Torx Drive Bit T30 Torx Drive Bit #2 Phillips Drive Bit #3 Phillips Drive Bit 1/8" Hex L-Key Plastic Case	90161A104	0000000

Sleeve Anchors for Block and Brick

Mount machinery, railings, and framing in walls and floors. These anchors have a sleeve that expands inside your hole to create a strong grip. Since the gripping force is distributed along the entire length of the anchor, it won’t crack soft materials like block and brick. You can use these anchors as an alternative to wedge anchors in concrete near edges, corners, or other weak points, but they are not as strong.

To install, drive the anchor through your machinery into a drilled hole until the head meets the surface. Then, tighten the nut or flat head to expand the anchor sleeve. Remove your machinery by unfastening the nut or flat head, but the anchor itself cannot be removed.

Anchors with Flat Head

The flat head creates a flush finish in countersunk holes.

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

		Thread				Ultimate Strength, lbf
	Lg.	Size	Lg.	Min. Installation Dp.	Drill Bit Size	Pull-Out	Shear	Conditions Tested In	Installation Torque, ft·lbf	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				1/4" Diameter

				1 1/2"	10-24	5/8"	5/8"	1/4"	640	1,000	4,000 psi Concrete	6	25	97480A141	000000


				2 1/4"	10-24	1 1/4"	5/8"	1/4"	640	1,000	4,000 psi Concrete	6	25	97480A142	00000
				3"	10-24	2"	5/8"	1/4"	640	1,000	4,000 psi Concrete	6	25	97480A143	00000
				4"	10-24	2 1/2"	5/8"	1/4"	640	1,000	4,000 psi Concrete	6	25	97480A144	00000
				5 1/4"	10-24	2 1/2"	5/8"	1/4"	640	1,000	4,000 psi Concrete	6	10	97480A145	00000




						5/16" Diameter

						2 1/2"	1/4"-20	1 1/4"	1 1/4"	5/16"	1,480	2,280	4,000 psi Concrete	12	10	97480A146	00000




								3/8" Diameter

								2 3/4"	5/16"-18	1 5/8"	1 5/8"	3/8"	2,280	4,000	4,000 psi Concrete	18	10	97480A148	00000


								4"	5/16"-18	2 5/8"	1 5/8"	3/8"	2,280	4,000	4,000 psi Concrete	18	10	97480A149	00000
								5"	5/16"-18	1 5/8"	1 5/8"	3/8"	2,280	4,000	4,000 psi Concrete	18	10	97480A151	00000
								6"	5/16"-18	1 5/8"	1 5/8"	3/8"	2,280	4,000	4,000 psi Concrete	18	10	97480A152	00000

High-Strength Toggle Anchors for Drywall

Our highest-strength drywall anchors are strong enough to secure pegboards, grab bars, and sinks. The toggle creates an extremely tight hold and won’t fall behind the wall when your screw is removed, so you can switch out components without losing strength. However, the anchor itself cannot be removed. Unlike traditional toggle bolt anchors, the toggle is pulled tight to the wall with the cap, which also covers the hole.

To install, push the toggle through a drilled hole and pull the anchor back toward you until the toggle rests flush against the wall. Then, slide the cap along the straps up to the wall. Push straps side-to-side, snapping them off so they're level with the cap. Next, position your component over the hole, insert a machine screw, and tighten. The minimum screw length is the wall and component thicknesses plus _1/2".

								Ultimate Strength, lbf
For Thread Size	Usable Lg.	Drill Bit Size	Wing Span	Toggle Material	Material	Fastener Head Type	Drive Style	Pull-Out	Shear	Conditions Tested In	Pkg. Qty.		Pkg.
10-24	3/8" to 3 5/8"	1/2"	2"	Zinc-Plated Steel	Polystyrene	Flat	Phillips	230	240	1/2" Drywall	10	97802A322	000000
1/4"-20	3/8" to 3 5/8"	1/2"	2"	Zinc-Plated Steel	Polystyrene	Flat	Phillips	260	240	1/2" Drywall	10	97802A324	00000

Bolt-Style Sleeve Anchors for Block and Brick

Remove the bolt so the anchor is flush with your walls and floors to slide components past these anchors, making it easier to install or make adjustments. They’re best for door frames that need to be pressed into place or machinery you service frequently. All have a sleeve that expands inside your hole to create a strong grip. Since the gripping force is distributed along the entire length of the anchor, it won’t crack soft materials like block and brick. You can use these anchors as an alternative to wedge anchors in concrete near edges, corners, or other weak points, but they are not as strong.

To install, drive the anchor through your component into a drilled hole until the head meets the surface. Then, tighten the bolt to expand the anchor sleeve. As you tighten, the nylon ring compresses to secure the component against the surface. You can remove the bolt, but the anchor itself cannot be removed.

Anchors with Flat Head

The flat head creates a flush finish in countersunk holes.

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

		Thread				Ultimate Strength, lbf					Each		Package
	Lg.	Size	Lg.	Min. Installation Dp.	Drill Bit Size	Pull-Out	Shear	Conditions Tested In	Installation Torque, ft·lbf	Certification		Each	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				3/8" Diameter

				3 3/4"	5/16"-18	7/8"	2"	3/8"	4,400	6,400	4,000 psi Concrete	25	UL Listed	92403A803	00000	10	92403A823	000000


				5"	5/16"-18	7/8"	2"	3/8"	4,400	6,400	4,000 psi Concrete	25	UL Listed	92403A805	0000	10	92403A825	00000
				6"	5/16"-18	7/8"	2"	3/8"	4,400	6,400	4,000 psi Concrete	25	UL Listed	92403A806	0000	10	92403A826	00000




						1/2" Diameter

						5"	3/8"-16	1"	2 1/2"	1/2"	6,400	8,000	4,000 psi Concrete	45	UL Listed	92403A801	0000	10	92403A821	00000




								5/8" Diameter

								5 1/2"	1/2"-13	1 1/8"	2 3/4"	5/8"	7,600	11,600	4,000 psi Concrete	100	UL Listed	92403A802	00000	4	92403A822	00000

Light Duty Drive Rivet Anchors for Block and Brick

A step up from a nail, the rivet head creates a secure connection with a finished look for mounting lightweight signs, screens, and panels. Easier to install than other types of anchors for block and brick, the anchors expand as you hammer in the pin or screw. Since the gripping force is distributed along the entire length of the anchor, it won’t crack soft materials.

To install, insert the anchor through your component and into a drilled hole. Then, hammer the pin or screw until it's flush with the anchor's head, which expands the anchor body.

Easy-Release Screw Drive Anchors

To remove, unthread the screw to release the anchor's grip and then pull out the anchor.

		Head						Ultimate Strength
	Lg.	Dia.	Ht.	Min. Installation Dp.	Drill Bit Size	Screw Material	Material	Pull-Out	Shear	Pkg. Qty.		Pkg.
3/16" Diameter



		1"	7/16"	1/8"	1"	3/16"	Zinc-Plated Steel	Nylon	Not Rated	Not Rated	100	97066A020	000000


		1/4" Diameter



				1"	7/16"	1/8"	1"	1/4"	Zinc-Plated Steel	Nylon	Not Rated	Not Rated	100	97066A026	00000


				1 1/2"	7/16"	1/8"	1 1/2"	1/4"	Zinc-Plated Steel	Nylon	Not Rated	Not Rated	100	97066A028	00000

Tamper-Resistant Tapping Screws for Masonry and Concrete


Corrosion-Resistant-Coated Steel with Flat Head	Tamper-Resistant Torx Drive

Deter unauthorized access. With a six-lobe recess and security pin in the drive, these screws require a tamper-resistant bit to install and remove. To create a pilot hole, use a hammer drill or rotary hammer and a compatible bit. Pull-out strength and shear strength are 25% of the ultimate values.

Flat Head—Beveled under the head, these screws sit flush in countersunk holes.

	Screws														Power Tool Bits
					Head		Strength, lbf
	Lg.	Drill Bit Size	Thread Lg.	Min. Installation Dp.	Dia.	Ht.	Pull-Out	Shear	Conditions Tested In	Drive Size	Drive Style	Pkg. Qty.		Pkg.		Each
Corrosion-Resistant-Coated Steel with Flat Head







				1/4" Screw Size

				1 1/4"	3/16"	1 1/6"	1"	1/2"	3/16"	190	225	3,000 psi Concrete	T27	Tamper-Resistant Torx	10	93341A125	00000	7233A67	00000


				1 3/4"	3/16"	1 1/4"	1"	1/2"	3/16"	190	225	3,000 psi Concrete	T27	Tamper-Resistant Torx	10	93341A126	0000	7233A67	0000
				2 1/4"	3/16"	1 1/4"	1"	1/2"	3/16"	190	225	3,000 psi Concrete	T27	Tamper-Resistant Torx	10	93341A127	0000	7233A67	0000
				2 3/4"	3/16"	1 1/4"	1"	1/2"	3/16"	190	225	3,000 psi Concrete	T27	Tamper-Resistant Torx	10	93341A128	0000	7233A67	0000