Undercut Head Socket Cap Screws

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169 Products

Drive Style

Hex

Six contact points securely grip your driver without stripping the drive

166 products

Tamper-Resistant Hex

A pin in the drive deters unauthorized access

2 products

Performance

Tamper Resistant

Prevent unauthorized access, damage, and vandalism

2 products

Corrosion Resistant

Resist corrosion from moisture, chemicals, and harsh weather

153 products

Stainless Steel Hex-Drive Flat Head Screws

The most corrosion-resistant hex-drive flat head screws we offer. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals, but they're not as strong as alloy steel. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver without slipping and stripping the drive.

Length is measured from the top of the head.

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

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

Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these screws will hold up in just about any environment, including salt water and most chemicals.

Standard Profile—Standard-profile heads are the most common choice for flat head screws.

Undercut Profile—About a third thinner than standard heads, the undercut profile fits into shallow holes in thin material. The thin head also has more threading on the shaft, so they're often used to keep short screws from coming loose.

				Head
	Lg.	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				4-40

				1/8"	82°	Undercut	0.212"	0.047"	Fully Threaded	70,000	—	—	10	92210A355	000000


				3/16"	82°	Undercut	0.255"	0.047"	Fully Threaded	70,000	ASME B18.3, ASTM F879	—	100	92210A103	0000
				3/16"	100°	Standard	0.255"	0.059"	Partially Threaded	70,000	—	—	1	99926A101	0000
				1/4"	100°	Standard	0.255"	0.059"	Partially Threaded	70,000	—	Material Certificate	1	99926A102	0000
				5/16"	100°	Standard	0.255"	0.059"	Partially Threaded	70,000	—	—	1	99926A103	0000
				3/8"	100°	Standard	0.255"	0.059"	Partially Threaded	70,000	—	Material Certificate	1	99926A104	0000
				1/2"	100°	Standard	0.255"	0.059"	Partially Threaded	70,000	—	Material Certificate	1	99926A105	0000




						6-32

						3/16"	82°	Undercut	0.307"	0.059"	Fully Threaded	70,000	ASME B18.3	—	25	92210A142	0000


						1/4"	100°	Undercut	0.307"	0.066"	Partially Threaded	70,000	—	Material Certificate	1	99926A106	0000
						5/16"	100°	Undercut	0.307"	0.066"	Partially Threaded	70,000	—	Material Certificate	1	99926A107	0000
						3/8"	100°	Undercut	0.307"	0.066"	Partially Threaded	70,000	—	Material Certificate	1	99926A108	0000
						1/2"	100°	Undercut	0.307"	0.066"	Partially Threaded	70,000	—	Material Certificate	1	99926A109	0000
						5/8"	100°	Undercut	0.307"	0.066"	Partially Threaded	70,000	—	—	1	99926A111	0000
						3/4"	100°	Undercut	0.307"	0.066"	Partially Threaded	70,000	—	—	1	99926A112	0000
						1"	100°	Undercut	0.307"	0.066"	Partially Threaded	70,000	—	—	1	99926A113	0000




								8-32

								1/4"	100°	Undercut	0.359"	0.076"	Partially Threaded	70,000	—	—	1	99926A114	0000


								5/16"	100°	Undercut	0.359"	0.076"	Partially Threaded	70,000	—	—	1	99926A115	0000
								3/8"	100°	Undercut	0.359"	0.076"	Partially Threaded	70,000	—	Material Certificate	1	99926A116	0000
								1/2"	100°	Undercut	0.359"	0.076"	Partially Threaded	70,000	—	Material Certificate	1	99926A117	0000
								5/8"	100°	Undercut	0.359"	0.076"	Partially Threaded	70,000	—	Material Certificate	1	99926A118	0000
								3/4"	100°	Undercut	0.359"	0.076"	Partially Threaded	70,000	—	—	1	99926A119	0000
								1"	100°	Undercut	0.359"	0.076"	Partially Threaded	70,000	—	—	1	99926A121	0000




										10-24

										1/4"	82°	Undercut	0.411"	0.081"	Fully Threaded	70,000	ASME B18.3	—	25	92210A236	0000


										3/8"	100°	Undercut	0.411"	0.084"	Partially Threaded	70,000	—	Material Certificate	1	99926A122	0000
										1/2"	100°	Undercut	0.411"	0.084"	Partially Threaded	70,000	—	Material Certificate	1	99926A123	0000
										5/8"	100°	Undercut	0.411"	0.084"	Partially Threaded	70,000	—	—	1	99926A124	0000
										3/4"	100°	Undercut	0.411"	0.084"	Partially Threaded	70,000	—	—	1	99926A125	0000
										1"	100°	Undercut	0.411"	0.084"	Partially Threaded	70,000	—	—	1	99926A126	0000




										10-32

		1/4"								82°	Undercut	0.411"	0.081"	Fully Threaded	70,000	ASME B18.3	—	50	92210A297	0000


		3/8"	100°							Undercut	0.411"	0.084"	Partially Threaded	70,000	—	Material Certificate	1	99926A128	0000
		1/2"	100°							Undercut	0.411"	0.084"	Partially Threaded	70,000	—	—	1	99926A129	0000
		5/8"	100°							Undercut	0.411"	0.084"	Partially Threaded	70,000	—	—	1	99926A131	0000
		3/4"	100°							Undercut	0.411"	0.084"	Partially Threaded	70,000	—	Material Certificate	1	99926A132	0000
		1"	100°							Undercut	0.411"	0.084"	Partially Threaded	70,000	—	—	1	99926A133	0000
		1 1/2"	100°							Undercut	0.411"	0.084"	Partially Threaded	70,000	—	—	1	99926A134	0000




										1/4"-20

				1/4"						82°	Undercut	0.531"	0.161"	Partially Threaded	70,000	—	—	1	92210A346	0000


				3/8"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A135	0000
				1/2"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A136	0000
				5/8"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A137	0000
				3/4"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A138	0000
				7/8"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A139	0000
				1"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A141	0000
				1 1/4"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A142	0000
				1 1/2"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A143	00000
				1 3/4"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	—	1	99926A144	00000
				2"	100°					Undercut	0.531"	0.105"	Partially Threaded	70,000	—	Material Certificate	1	99926A145	00000




						5/16"-18

						5/8"	100°			Undercut	0.656"	0.127"	Partially Threaded	70,000	—	Material Certificate	1	99926A146	0000


						3/4"	100°			Undercut	0.656"	0.127"	Partially Threaded	70,000	—	—	1	99926A147	0000
						1"	100°			Undercut	0.656"	0.127"	Partially Threaded	70,000	—	Material Certificate	1	99926A148	0000
						1 1/4"	100°			Undercut	0.656"	0.127"	Partially Threaded	70,000	—	Material Certificate	1	99926A149	00000
						1 1/2"	100°			Undercut	0.656"	0.127"	Partially Threaded	70,000	—	Material Certificate	1	99926A151	00000
						1 3/4"	100°			Undercut	0.656"	0.127"	Partially Threaded	70,000	—	Material Certificate	1	99926A152	00000
						2"	100°			Undercut	0.656"	0.127"	Partially Threaded	70,000	—	—	1	99926A153	00000




								3/8"-16

								3/4"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	Material Certificate	1	99926A154	0000


								1"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	Material Certificate	1	99926A155	00000
								1 1/4"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	Material Certificate	1	99926A156	00000
								1 1/2"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	Material Certificate	1	99926A157	00000
								1 3/4"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	—	1	99926A158	00000
								2"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	Material Certificate	1	99926A159	00000
								2 1/2"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	Material Certificate	1	99926A161	00000
								3"	100°	Undercut	0.781"	0.157"	Partially Threaded	70,000	—	—	1	99926A162	00000




								1/2"-13

								1"	100°	Undercut	0.937"	0.181"	Partially Threaded	70,000	—	Material Certificate	1	99926A163	00000


								1 1/4"	100°	Undercut	0.937"	0.181"	Partially Threaded	70,000	—	Material Certificate	1	99926A164	00000
								1 1/2"	100°	Undercut	0.937"	0.181"	Partially Threaded	70,000	—	—	1	99926A165	00000
								2"	100°	Undercut	0.937"	0.181"	Partially Threaded	70,000	—	—	1	99926A166	00000


								Highly Corrosion-Resistant 316 Stainless Steel







										4-40

										3/16"	100°	Undercut	0.255"	0.059"	Fully Threaded	70,000	—	—	5	90729A611	00000


										1/4"	100°	Undercut	0.255"	0.059"	Fully Threaded	70,000	—	Material Certificate	5	90729A612	00000
										5/16"	100°	Undercut	0.255"	0.059"	Fully Threaded	70,000	—	Material Certificate	5	90729A613	00000
										3/8"	100°	Undercut	0.255"	0.059"	Fully Threaded	70,000	—	—	5	90729A614	00000
										1/2"	100°	Undercut	0.255"	0.059"	Fully Threaded	70,000	—	—	5	90729A615	00000




				6-32

				1/4"	100°							Undercut	0.307"	0.066"	Fully Threaded	70,000	—	—	5	90729A114	00000


				5/16"	100°							Undercut	0.307"	0.066"	Fully Threaded	70,000	—	—	5	90729A115	00000
				3/8"	100°							Undercut	0.307"	0.066"	Fully Threaded	70,000	—	Material Certificate	1	90729A111	0000
				1/2"	100°							Undercut	0.307"	0.066"	Fully Threaded	70,000	—	—	1	90729A112	0000
				3/4"	100°							Undercut	0.307"	0.066"	Fully Threaded	70,000	—	—	1	90729A113	0000




												8-32

												3/8"	100°	Undercut	0.359"	0.076"	Fully Threaded	70,000	—	—	1	90729A211	0000


						1/2"	100°					Undercut	0.359"	0.076"	Fully Threaded	70,000	—	Material Certificate	1	90729A212	0000
						3/4"	100°					Undercut	0.359"	0.076"	Fully Threaded	70,000	—	—	1	90729A213	0000




												10-24

												1/4"	82°	Undercut	0.411"	0.081"	Fully Threaded	70,000	ASME B18.3	—	10	90585A025	0000




10-32

1/4"	82°													Undercut	0.411"	0.089"	Fully Threaded	70,000	ASME B18.3, ASTM F879	—	25	90585A281	0000


3/8"	100°													Undercut	0.411"	0.084"	Fully Threaded	70,000	—	Material Certificate	1	90729A314	0000
1/2"	100°													Undercut	0.411"	0.084"	Fully Threaded	70,000	—	Material Certificate	1	90729A311	0000
5/8"	100°													Undercut	0.411"	0.084"	Fully Threaded	70,000	—	Material Certificate	1	90729A315	0000
3/4"	100°													Undercut	0.411"	0.084"	Fully Threaded	70,000	—	Material Certificate	1	90729A312	0000
1"	100°													Undercut	0.411"	0.084"	Fully Threaded	70,000	—	—	1	90729A313	0000




														1/4"-20

		1/4"						82°						Undercut	0.531"	0.107"	Fully Threaded	70,000	—	—	10	90585A036	0000


		1/2"	100°					Undercut						0.531"	0.105"	Fully Threaded	70,000	—	Material Certificate	1	90729A411	0000
		5/8"	100°					Undercut						0.531"	0.105"	Fully Threaded	70,000	—	Material Certificate	1	90729A416	0000
		3/4"	100°					Undercut	0.531"					0.105"	Fully Threaded	70,000	—	Material Certificate	1	90729A412	0000
		1"	100°					Undercut	0.531"					0.105"	Fully Threaded	70,000	—	Material Certificate	1	90729A413	0000
		1 1/4"	100°					Undercut	0.531"					0.105"	Fully Threaded	70,000	—	—	1	90729A414	0000
		1 1/2"	100°					Undercut	0.531"					0.105"	Fully Threaded	70,000	—	—	1	90729A415	00000




								1/4"-28

								1/4"	82°					Undercut	0.531"	0.107"	Fully Threaded	70,000	ASME B18.3	—	10	90585A047	0000




										5/16"-18

										3/4"	100°			Undercut	0.656"	0.127"	Fully Threaded	70,000	—	—	1	90729A511	0000


										1"	100°			Undercut	0.656"	0.127"	Fully Threaded	70,000	—	Material Certificate	1	90729A512	0000
										1 1/4"	100°			Undercut	0.656"	0.127"	Fully Threaded	70,000	—	Material Certificate	1	90729A514	00000
										1 1/2"	100°			Undercut	0.656"	0.127"	Fully Threaded	70,000	—	—	1	90729A513	00000




										3/8"-16

										1/2"	82°			Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3	—	5	90585A082	0000




														M3 × 0.5 mm

						5 mm	100°							Undercut	6 mm	1.3 mm	Fully Threaded	70,000	—	Material Certificate	5	90729A165	00000


						6 mm	100°							Undercut	6 mm	1.3 mm	Fully Threaded	70,000	—	Material Certificate	5	90729A166	00000
						8 mm	100°							Undercut	6 mm	1.3 mm	Fully Threaded	70,000	—	Material Certificate	5	90729A167	00000
						10 mm	100°							Undercut	6 mm	1.3 mm	Fully Threaded	70,000	—	Material Certificate	5	90729A168	00000
						12 mm	100°							Undercut	6 mm	1.3 mm	Fully Threaded	70,000	—	Material Certificate	5	90729A169	00000




												M4 × 0.7 mm

												6 mm	100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A265	0000


												8 mm	100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A266	0000
												10 mm	100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A267	0000
												12 mm	100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	—	—	1	90729A268	0000
16 mm												100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A269	0000




												M5 × 0.8 mm

												8 mm	100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A365	0000


												10 mm	100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A366	0000
												12 mm	100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A367	0000
												16 mm	100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	—	—	1	90729A368	0000
												20 mm	100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A369	0000




												M6 × 1 mm

												12 mm	100°	Undercut	12 mm	2.2 mm	Fully Threaded	70,000	—	—	1	90729A465	0000


								16 mm	100°			Undercut	12 mm	2.2 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A466	0000
								20 mm	100°			Undercut	12 mm	2.2 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A467	0000
								25 mm	100°			Undercut	12 mm	2.2 mm	Fully Threaded	70,000	—	—	1	90729A468	0000
								30 mm	100°			Undercut	12 mm	2.2 mm	Fully Threaded	70,000	—	—	1	90729A469	0000




												M8 × 1.25 mm

												16 mm	100°	Undercut	16 mm	2.8 mm	Fully Threaded	70,000	—	Material Certificate	1	90729A565	0000


				20 mm	100°							Undercut	16 mm	2.8 mm	Fully Threaded	70,000	—	—	1	90729A566	0000
				25 mm	100°							Undercut	16 mm	2.8 mm	Fully Threaded	70,000	—	—	1	90729A567	0000
				30 mm	100°							Undercut	16 mm	2.8 mm	Fully Threaded	70,000	—	—	1	90729A568	00000




										M10 × 1.5 mm

										16 mm	100°	Undercut	20 mm	3.5 mm	Fully Threaded	70,000	ASTM A276	—	1	90729A617	00000


										25 mm	100°	Undercut	20 mm	3.5 mm	Fully Threaded	70,000	ASTM A276	—	1	90729A619	00000
										30 mm	100°	Undercut	20 mm	3.5 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	90729A621	00000
										35 mm	100°	Undercut	20 mm	3.5 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	90729A622	00000
										50 mm	100°	Undercut	20 mm	3.5 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	90729A624	00000




										M12 × 1.75 mm

										25 mm	100°	Undercut	24 mm	4.2 mm	Fully Threaded	70,000	ASTM A276	—	1	90729A628	00000


										30 mm	100°	Undercut	24 mm	4.2 mm	Fully Threaded	70,000	ASTM A276	—	1	90729A629	00000
										35 mm	100°	Undercut	24 mm	4.2 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	90729A631	00000


										Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel







												M3 × 0.5 mm

												5 mm	100°	Undercut	6 mm	1.3 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A101	0000


												6 mm	100°	Undercut	6 mm	1.3 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A102	0000
												8 mm	100°	Undercut	6 mm	1.3 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A103	0000
		10 mm										100°	Undercut	6 mm	1.3 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A104	0000
		12 mm	100°									Undercut	6 mm	1.3 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A105	0000




												M4 × 0.7 mm

												6 mm	100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A106	0000


												8 mm	100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	95440A107	0000
												10 mm	100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	95440A108	0000
								12 mm				100°	Undercut	8 mm	1.6 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	95440A109	0000
								16 mm	100°			Undercut	8 mm	1.6 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A110	0000




												M5 × 0.8 mm

												8 mm	100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A111	0000


												10 mm	100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A112	0000
				12 mm								100°	Undercut	10 mm	1.9 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A113	0000
				16 mm	100°							Undercut	10 mm	1.9 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A114	0000




												M6 × 1 mm

												12 mm	100°	Undercut	12 mm	2.2 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	95440A116	0000


												16 mm	100°	Undercut	12 mm	2.2 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	95440A117	0000
												20 mm	100°	Undercut	12 mm	2.2 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A118	0000
						30 mm						100°	Undercut	12 mm	2.2 mm	Fully Threaded	70,000	ASTM A276	Material Certificate	1	95440A120	00000




												M8 × 1.25 mm

												16 mm	100°	Undercut	16 mm	2.8 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A121	0000


												20 mm	100°	Undercut	16 mm	2.8 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A122	0000
												25 mm	100°	Undercut	16 mm	2.8 mm	Fully Threaded	70,000	ASTM A276	—	1	95440A123	00000

Steel Hex-Drive Flat Head Screws

Our strongest hex-drive flat head screws. They're made of alloy steel, so they have nearly twice the tensile strength of other screws. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver without slipping and stripping the drive.

Length is measured from the top of the head.

Black-Oxide Alloy 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 Alloy Steel—A common choice for areas with occasional exposure to moisture.

				Head
	Lg.	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Alloy Steel







				1-64

				1/8"	82°	Undercut	0.168"	0.031"	Fully Threaded	130,000	ASME B18.3, ASTM F835	10	91253A486	000000




						3-48

						3/16"	82°	Undercut	0.187"	0.042"	Fully Threaded	130,000	ASTM F835	25	91253A093	0000




								4-40

								1/8"	82°	Undercut	0.255"	0.047"	Fully Threaded	130,000	ASTM F835	25	91253A102	00000




										5-40

										1/8"	82°	Undercut	0.281"	0.053"	Fully Threaded	130,000	ASTM F835	10	91253A122	00000




												6-32

												1/8"	82°	Undercut	0.262"	0.059"	Fully Threaded	130,000	ASTM F835	10	91253A163	00000


												5/32"	82°	Undercut	0.262"	0.059"	Fully Threaded	130,000	ASTM F835	5	91253A164	0000
												3/16"	82°	Undercut	0.262"	0.059"	Fully Threaded	130,000	ASTM F835	25	91253A165	00000




														8-32

														5/32"	82°	Undercut	0.312"	0.07"	Fully Threaded	130,000	ASTM F835	10	91253A185	00000


														3/16"	82°	Undercut	0.359"	0.07"	Fully Threaded	130,000	ASTM F835	25	91253A186	00000




																10-32

																3/16"	82°	Undercut	0.362"	0.081"	Fully Threaded	130,000	ASTM F835	5	91253A265	00000




																		1/4"-20

1/4"	82°																	Undercut	0.531"	0.107"	Fully Threaded	130,000	ASTM F835	10	91253A533	00000




		1/4"-28

		1/4"	82°															Undercut	0.477"	0.107"	Fully Threaded	130,000	ASTM F835	5	91253A304	00000




				3/8"-16

				3/8"	82°													Undercut	0.717"	0.161"	Fully Threaded	130,000	ASTM F835	5	91253A346	00000


				Zinc-Plated Alloy Steel







																		6-32

																		3/16"	82°	Undercut	0.307"	0.078"	Fully Threaded	130,000	ASTM F835	25	91263A505	00000




																		8-32

																		1/4"	82°	Undercut	0.359"	0.099"	Fully Threaded	130,000	ASTM F835	100	91263A521	00000

Tamper-Resistant Hex-Drive Stainless Steel Flat Head Screws

Image of Product. Front orientation. Contains Annotated, MultipleImages. Flat Head Screws. Tamper-Resistant Hex-Drive Stainless Steel Flat Head Screws.

Prevent unauthorized access and damage to components. These screws have a security pin in the drive that you can only turn with a tamper-resistant hex driver. Also known as pin-in-hex and pin-in-socket drives, the deep six-point opening helps them withstand torque without damaging the drive. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals.

Length is measured from the top of the head.

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

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

	Screws											Power Tool Bits
				Head
	Lg.	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.		Each
18-8 Stainless Steel







				6-32

				1/4"	82°	Undercut	0.307"	0.059"	Fully Threaded	70,000	ASME B18.3	25	90517A140	00000	7240A33	00000