ASTM F879 Flat Head Screws

Filter by

System of Measurement

Thread Size

Length

Material

Fastener Head Type

Drive Style

Countersink Angle

Flat Head Profile

Threading

Head Diameter

Head Height

Thread Type

Specifications Met

Federal Specification

Thread Direction

Drive Size

Thread Spacing

Performance

Tensile Strength

70,000 psi to 99,999 psi

Not Rated

Tip Type

Flat

Thread Fit

Unified Standard Class 3A

Hardness

Rockwell B55

Not Rated

DFARS Specialty Metals

Compliant

Not Compliant

REACH

Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

RoHS

210 Products

Performance

Vibration Resistant

Keep parts from coming loose on machinery with mild vibration

40 products

Chemical Resistant

Won't degrade when exposed to most chemicals

60 products

Application

Venting

Prevent the buildup of pressure or vacuum in sealed spaces

54 products

Flat Head Profile

Standard

The most common head profile for flat head screws

208 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.

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	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				1-64

				3/16"	82°	Standard	0.168"	0.054"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A358	00000


				1/4"	82°	Standard	0.168"	0.054"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A361	0000
				3/8"	82°	Standard	0.168"	0.054"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A364	0000




						4-40

						3/16"	82°	Undercut	0.255"	0.047"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A103	0000


						9/16"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A101	0000
						7/8"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A102	0000
						2"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A121	0000




								6-32

								11/16"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A164	0000


								1 3/8"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A165	00000




										8-32

										9/16"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A195	0000


										11/16"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A166	00000
										1 1/8"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A202	0000
										1 3/8"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A204	0000
										2 1/2"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A209	0000
										3"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A210	00000




												10-24

												7/16"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A241	00000


												9/16"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A243	00000
												11/16"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A167	0000
												1 1/8"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A248	00000
												1 3/8"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A250	00000
												2 1/4"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A254	00000




												10-32

		9/16"	82°									Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	92210A323	00000


		11/16"	82°									Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A169	0000
		1 1/8"	82°									Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A324	0000
		1 3/8"	82°									Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A309	00000
		1 5/8"	82°									Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A170	00000
		2 1/4"	82°									Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A319	00000
		3 1/2"	82°									Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A322	0000




				1/4"-20

				7/16"	82°							Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A536	00000


				9/16"	82°							Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A538	0000
				11/16"	82°							Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	92210A171	00000
				1 3/8"	82°							Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A545	0000
				1 5/8"	82°							Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A547	00000
				1 7/8"	82°							Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A172	00000
				2 3/4"	82°	Standard						0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A553	00000
				3 1/4"	82°	Standard	0.531"					0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A556	00000
				5"	82°	Standard	0.531"					0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	92210A566	0000
				6"	82°	Standard	0.531"					0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	92210A568	0000
				7"	82°	Standard	0.531"					0.161"	Partially Threaded	70,000	ASME B18.3, ASTM F879	1	92210A173	00000




						5/16"-18

						7/16"	82°	Standard				0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A174	0000


						9/16"	82°	Standard	0.656"			0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	92210A175	0000
						1 3/8"	82°	Standard	0.656"			0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A586	0000
						1 5/8"	82°	Standard	0.656"			0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A588	0000
						1 7/8"	82°	Standard	0.656"			0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A590	0000
						3 1/4"	82°	Standard	0.656"			0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A176	00000
						4 1/2"	82°	Standard	0.656"			0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	92210A861	0000
						5"	82°	Standard	0.656"			0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	92210A862	00000




								3/8"-16

								1 1/8"	82°	Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A625	0000


								1 3/8"	82°	Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A627	0000
								1 5/8"	82°	Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A629	00000
								1 7/8"	82°	Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	92210A631	00000
								3 1/4"	82°	Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	92210A178	0000




	1/2"-13

	7/8"								82°	Standard	0.938"	0.251"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	92210A711	0000


	1 7/8"								82°	Standard	0.938"	0.251"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	92210A719	00000
	2 3/4"								82°	Standard	0.938"	0.251"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	92210A723	0000
	3 1/4"								82°	Standard	0.938"	0.251"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	92210A725	0000


	Highly Corrosion-Resistant 316 Stainless Steel







										2-56

										5/16"	82°	Standard	0.197"	0.064"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	90585A116	00000


										3/8"	82°	Standard	0.197"	0.064"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	90585A120	00000
										1/2"	82°	Standard	0.197"	0.064"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	90585A124	00000




												4-40

												1/8"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A644	00000


												7/16"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A125	0000
				7/8"								82°	Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A126	0000
				1"	82°							Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A208	0000
				1 1/4"	82°							Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A209	0000
				1 1/2"	82°							Standard	0.255"	0.083"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A127	0000




												5-40

												1/4"	82°	Standard	0.281"	0.09"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A014	0000


												3/8"	82°	Standard	0.281"	0.09"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A018	0000
												1/2"	82°	Standard	0.281"	0.09"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A022	0000




												6-32

												3/16"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A647	00000


												5/16"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A211	0000
												7/16"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A213	0000
												9/16"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A128	0000
												5/8"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A215	0000
3/4"												82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A216	0000
7/8"								82°				Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A217	0000
1"								82°				Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A218	0000
1 1/4"								82°				Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A219	00000
1 1/2"								82°				Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A220	00000
2"								82°				Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A129	00000




												6-40

	1/4"											82°	Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A131	0000


	3/8"								82°			Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A132	0000
	1/2"								82°			Standard	0.307"	0.097"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A133	0000




			8-32

			3/16"						82°			Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A650	00000


			7/16"						82°			Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A227	0000
			9/16"						82°			Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A134	0000
			7/8"						82°			Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A232	0000
			1 1/8"						82°	Standard		0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A135	0000
			1 1/4"						82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A235	0000
			1 1/2"						82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A237	0000
			2"						82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A136	0000
			2 1/2"						82°	Standard	0.359"	0.112"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A653	0000




										10-24

										7/8"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A246	0000


				1 1/4"						82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A252	0000
				1 1/2"	82°					Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A254	0000




										10-32

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


						5/16"				82°	Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	90585A283	00000
						7/16"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A292	0000
						7/8"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A296	0000
						1 1/8"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A137	0000
						1 3/8"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A138	0000
						1 3/4"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A139	0000
						2"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A299	0000
						2 1/2"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A141	0000
						3"	82°			Standard	0.411"	0.127"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A143	00000




										1/4"-20

										9/16"	82°	Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A144	0000


5"										82°	Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A656	00000
6"										82°	Standard	0.531"	0.161"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A659	00000




										5/16"-18

										1 3/4"	82°	Standard	0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A662	00000


	5"									82°	Standard	0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	90585A665	0000




										5/16"-24

										5/8"	82°	Standard	0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	90585A668	0000


										3/4"	82°	Standard	0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A145	0000
										1"	82°	Standard	0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A146	0000
										1 1/2"	82°	Standard	0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A147	00000
										2"	82°	Standard	0.656"	0.198"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	90585A148	00000




									3/8"-16

									4 1/2"		82°	Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	90585A149	0000


									5"		82°	Standard	0.781"	0.234"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	90585A151	0000

Venting Stainless Steel Hex-Drive Flat Head Screws

Prevent the buildup of pressure or vacuum in sealed spaces. These screws have a hole drilled through their center that lets air, fluid, and gases escape. They're often used to release trapped gases and equalize pressure caused by high temperatures in coating, curing, and heating applications. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals. 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.

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

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







				2-56

				3/16"	82°	Standard	0.197"	0.064"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A110	00000


				1/4"	82°	Standard	0.197"	0.064"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A120	0000
				3/8"	82°	Standard	0.197"	0.064"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A130	00000
				1/2"	82°	Standard	0.197"	0.064"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A140	0000




						4-40

						1/4"	82°	Standard	0.255"	0.083"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A210	0000


						5/16"	82°	Standard	0.255"	0.083"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A220	0000
						3/8"	82°	Standard	0.255"	0.083"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A230	0000
						1/2"	82°	Standard	0.255"	0.083"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A240	00000




								6-32

								1/4"	82°	Standard	0.307"	0.097"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A310	0000


								3/8"	82°	Standard	0.307"	0.097"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A320	0000
								1/2"	82°	Standard	0.307"	0.097"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A330	0000
								5/8"	82°	Standard	0.307"	0.097"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A340	00000
								3/4"	82°	Standard	0.307"	0.097"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A350	0000
								1"	82°	Standard	0.307"	0.097"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A360	0000




										8-32

										3/8"	82°	Standard	0.359"	0.112"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A410	0000


										1/2"	82°	Standard	0.359"	0.112"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A420	00000
										5/8"	82°	Standard	0.359"	0.112"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A430	00000
										3/4"	82°	Standard	0.359"	0.112"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A440	00000
										1"	82°	Standard	0.359"	0.112"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A450	0000




												10-24

												3/8"	82°	Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A510	0000


												1/2"	82°	Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A520	0000
5/8"												82°	Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A530	0000
3/4"	82°											Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A540	00000
1"	82°											Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A550	0000




		10-32

		3/8"	82°									Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A610	0000


		1/2"	82°									Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A620	0000
		5/8"	82°									Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A630	0000
		3/4"	82°									Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A640	00000
		1"	82°									Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A650	0000
		1 1/4"	82°									Standard	0.411"	0.127"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A660	0000
		1 1/2"	82°									Standard	0.411"	0.127"	Partially Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A670	0000




				1/4"-20

				3/8"	82°							Standard	0.531"	0.161"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A710	0000


				1/2"	82°							Standard	0.531"	0.161"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A720	0000
				5/8"	82°							Standard	0.531"	0.161"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A730	00000
				3/4"	82°							Standard	0.531"	0.161"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A740	00000
				1"	82°							Standard	0.531"	0.161"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	5	90550A750	00000
				1 1/4"	82°	Standard						0.531"	0.161"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A760	0000
				1 1/2"	82°	Standard	0.531"					0.161"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A770	0000
				2"	82°	Standard	0.531"					0.161"	Partially Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A780	0000




						5/16"-18

						1/2"	82°					Standard	0.656"	0.198"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A810	0000


						5/8"	82°					Standard	0.656"	0.198"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A820	0000
						3/4"	82°					Standard	0.656"	0.198"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A830	0000
						1"	82°					Standard	0.656"	0.198"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A840	0000
						1 1/4"	82°	Standard				0.656"	0.198"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A850	0000
						1 1/2"	82°	Standard	0.656"			0.198"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A860	0000




								3/8"-16

								3/4"	82°			Standard	0.781"	0.234"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A910	0000


								1"	82°			Standard	0.781"	0.234"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A920	0000
								1 1/4"	82°			Standard	0.781"	0.234"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A930	0000
								1 1/2"	82°			Standard	0.781"	0.234"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A940	0000




										1/2"-13

										1"	82°	Standard	0.938"	0.251"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A105	0000


1 1/4"										82°	Standard	0.938"	0.251"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A106	0000
1 1/2"	82°									Standard	0.938"	0.251"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A107	0000
1 3/4"	82°									Standard	0.938"	0.251"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A108	0000
2"	82°									Standard	0.938"	0.251"	Fully Threaded	Not Rated	ASME B18.3, ASTM F879	1	90550A109	00000

Thread-Locking Stainless Steel Hex-Drive Flat Head Screws

Keep parts in place and screws free of corrosion on motors and other machinery that experience mild vibration. These screws have nylon-patch threadlocker bonded to the threads, saving you the time and mess of adding it yourself. 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.

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

Military Specification—These screws are manufactured and tested to meet strict U.S. military standards for material and construction.

				Head
	Lg.	Countersink Angle	Flat Head Profile	Dia.	Ht.	Threading	Tensile Strength, psi	Threadlocker Type	Threadlocker Temp. Range, ° F	Specs. Met	Mil. Spec.	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				4-40

				3/16"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A270	000000


				1/4"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	92805A106	00000
				5/16"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A280	00000
				3/8"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	92805A108	00000
				1/2"	82°	Standard	0.255"	0.083"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A112	0000




						6-32

						1/4"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	92805A144	00000


						5/16"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A290	0000
						3/8"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	92805A146	00000
						1/2"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A148	0000
						5/8"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A150	0000
						3/4"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A152	00000
						1"	82°	Standard	0.307"	0.097"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A310	00000




								8-32

								1/4"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A320	00000


								5/16"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A330	00000
								3/8"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A192	00000
								1/2"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A194	00000
								5/8"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A195	00000
								3/4"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A197	00000
								1"	82°	Standard	0.359"	0.112"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A340	00000




										10-24

										3/8"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A240	00000


										1/2"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A242	00000
										5/8"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A350	0000
										3/4"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A245	00000
										1"	82°	Standard	0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A247	00000




												10-32

3/8"	82°											Standard	0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A260	00000


1/2"	82°											Standard	0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A264	00000
5/8"	82°	Standard										0.411"	0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A265	00000
3/4"	82°	Standard	0.411"									0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A266	00000
1"	82°	Standard	0.411"									0.127"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A268	00000




		1/4"-20

		3/8"	82°									Standard	0.531"	0.161"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A535	00000


		1/2"	82°									Standard	0.531"	0.161"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A537	00000
		5/8"	82°									Standard	0.531"	0.161"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A378	00000
		3/4"	82°	Standard								0.531"	0.161"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A540	00000
		1"	82°	Standard	0.531"							0.161"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	92805A542	00000
		1 1/4"	82°	Standard	0.531"							0.161"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	92805A544	00000




				5/16"-18

				3/4"	82°							Standard	0.656"	0.198"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	92805A624	0000


				1"	82°							Standard	0.656"	0.198"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	92805A626	00000




						3/8"-16

						3/4"	82°					Standard	0.781"	0.234"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	92805A723	00000


						1"	82°					Standard	0.781"	0.234"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	92805A725	00000
						1 1/4"	82°					Standard	0.781"	0.234"	Fully Threaded	70,000	Nylon Patch	-65 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	92805A727	00000