ASTM F879 Rounded Head Screws

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Federal Specification

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Thread Spacing

Thread Direction

Rounded Head Profile

Tensile Strength

60,000 psi to 79,999 psi

80,000 psi to 99,999 psi

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Metric Class 6g

Unified Standard Class 3A

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Export Control Classification Number (ECCN)

EAR99

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263 Products

Performance

Vibration Resistant

Keep parts from coming loose on machinery with movement and vibration

74 products

Chemical Resistant

Maintain their strength when exposed to most chemicals

93 products

Locking Type

Threadlocker

Threadlocker is bonded to threads to keep parts in place during mild vibration

74 products

Drive Style

Hex

Six contact points securely grip your driver without stripping the drive

248 products

Stainless Steel Button Head Hex-Drive Screws

These button head screws won't corrode from moisture and chemicals, but they aren't as strong as alloy steel screws. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver.

Length is measured from under 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.

		Head
	Lg.	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				4-40

				9/16"	0.213"	0.059"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	00000


				1 1/8"	0.213"	0.059"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	0000
				1 3/8"	0.213"	0.059"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
				1 3/4"	0.213"	0.059"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
				2"	0.213"	0.059"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	00000




						6-32

						9/16"	0.262"	0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	0000


						1 1/8"	0.262"	0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	0000
						2 1/2"	0.262"	0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
						3"	0.262"	0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000




								8-32

								9/16"	0.312"	0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	0000


								1 1/8"	0.312"	0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
								2 1/2"	0.312"	0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
								3"	0.312"	0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000




										10-24

										7/16"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	0000


										1 1/8"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
										1 3/8"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
										2 1/4"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
										4"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000




												10-32

												1 1/8"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000


												1 3/8"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
												1 5/8"	0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
2 1/4"												0.361"	0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
3 1/2"	0.361"											0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
4"	0.361"											0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000




		12-24

		1"	0.378"									0.12"	Fully Threaded	70,000	ASTM F879	50	000000000	00000




												1/4"-20

												1/4"	0.437"	0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000


				7/16"								0.437"	0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
				9/16"	0.437"							0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
				1 1/8"	0.437"							0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
				1 3/8"	0.437"							0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
				1 5/8"	0.437"							0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
				1 7/8"	0.437"							0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
				3 1/4"	0.437"							0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000




												1/4"-28

						5/16"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000


						7/16"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
						9/16"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
						7/8"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
						1 1/8"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
						1 3/8"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
						1 5/8"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						1 3/4"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						2 1/2"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						3"	0.437"	0.132"				Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						3 1/2"	0.437"	0.132"	Fully Threaded			70,000	ASME B18.3, ASTM F879	10	000000000	00000


						4"	0.437"	0.132"	Fully Threaded			70,000	ASME B18.3, ASTM F879	10	000000000	00000




								5/16"-18

								7/16"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000


								9/16"	0.547"	0.166"		Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
								1 1/8"	0.547"	0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
								1 5/8"	0.547"	0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
								1 7/8"	0.547"	0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
								2 3/4"	0.547"	0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000
								3 1/4"	0.547"	0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
								5"	0.547"	0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
								6"	0.547"	0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000




5/16"-24

7/8"	0.547"									0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000


1 1/8"	0.547"									0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
1 3/8"	0.547"									0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
1 3/4"	0.547"									0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
2 1/2"	0.547"	0.166"								Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
3"	0.547"	0.166"	Fully Threaded							70,000	ASME B18.3, ASTM F879	5	000000000	0000
3 1/2"	0.547"	0.166"	Fully Threaded							70,000	ASME B18.3, ASTM F879	5	000000000	0000
4"	0.547"	0.166"	Fully Threaded							70,000	ASME B18.3, ASTM F879	5	000000000	00000




		3/8"-16

		1 1/8"	0.656"							0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000


		1 3/8"	0.656"							0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
		1 5/8"	0.656"							0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000
		1 7/8"	0.656"							0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000
		4 1/2"	0.656"							0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
		6"	0.656"	0.199"						Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000




				3/8"-24

				1 3/4"	0.656"					0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000


				2"	0.656"					0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
				2 1/2"	0.656"					0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
				3"	0.656"					0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000




										1/2"-13

										7/8"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000


										2 1/4"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
						2 3/4"				0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000
						3 1/4"	0.875"			0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000




										1/2"-20

										7/8"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000


										1 3/4"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
										2"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000
										2 1/2"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000
										3"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000


								Highly Corrosion-Resistant 316 Stainless Steel







												1-72

												1/8"	0.139"	0.039"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000


3/16"												0.139"	0.039"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
1/4"	0.139"											0.039"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000




												2-56

												1/2"	0.164"	0.046"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000


												5/8"	0.164"	0.046"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000




												4-40

												1 1/4"	0.213"	0.059"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000


												1 1/2"	0.213"	0.059"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000




				6-32

				1/4"	0.262"									0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	0000


				3/8"	0.262"									0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	100	000000000	00000
				1/2"	0.262"									0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
				3/4"	0.262"									0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
				1"	0.262"									0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	00000
				2"	0.262"									0.073"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000




						8-32

						1/4"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000


						3/8"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
						1/2"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	50	000000000	0000
						3/4"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
						7/8"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
						1"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
						1 3/4"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
						2"	0.312"							0.087"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000




								10-24

								3/8"	0.361"					0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000


								1/2"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	25	000000000	0000
								5/8"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	25	000000000	0000
								3/4"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	25	000000000	00000
								1"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	25	000000000	00000
								1 3/4"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	10	000000000	0000




								10-32

								1/4"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	50	000000000	0000


								3/8"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	50	000000000	0000
								1/2"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	50	000000000	0000
								5/8"	0.361"	0.101"	Fully Threaded			70,000	ASME B18.3, ASTM F879	25	000000000	0000
		3/4"						0.361"	0.101"	Fully Threaded	70,000			ASME B18.3, ASTM F879	25	000000000	00000
		7/8"	0.361"					0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879			25	000000000	00000
		1"	0.361"					0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879			25	000000000	00000
		1 3/4"	0.361"					0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879			10	000000000	0000
		3"	0.361"					0.101"	Fully Threaded	70,000	ASME B18.3, ASTM F879			10	000000000	00000




								12-24

								1/2"	0.413"	0.114"	Fully Threaded			70,000	ASTM F879	25	000000000	0000


								3/4"	0.413"	0.114"	Fully Threaded			70,000	ASTM F879	25	000000000	00000
								1"	0.413"	0.114"	Fully Threaded	70,000		ASTM F879	25	000000000	00000




										1/4"-20

										1/4"	0.437"	0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000


				5/16"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
				3/8"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
				7/16"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
				1/2"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
				5/8"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
				3/4"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
				7/8"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
				1"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
				1 1/4"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
				1 1/2"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000


				6"	0.437"					0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000




						1/4"-28

						3/8"	0.437"			0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000


						1/2"	0.437"			0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	0000
						3/4"	0.437"			0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
						1"	0.437"			0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	25	000000000	00000
						1 1/4"	0.437"			0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						1 1/2"	0.437"			0.132"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000




						5/16"-18

						1/2"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000


						5/8"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						3/4"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						7/8"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						1"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						1 1/8"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
						1 1/4"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
						1 3/8"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
						1 1/2"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000




						5/16"-24

						1/2"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000


						3/4"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	0000
						1"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
						1 1/4"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
						1 1/2"	0.547"			0.166"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000




								3/8"-16

								3/4"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000


								7/8"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000
								1"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000
								1 1/8"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
								1 3/8"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
								1 1/2"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
								3 1/2"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
								4"	0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000




										3/8"-24

				3/4"						0.656"	0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000


				1"	0.656"					0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	10	000000000	00000
				1 1/4"	0.656"					0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000
				1 1/2"	0.656"					0.199"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000




										1/2"-13

										3/4"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	0000


1"	0.875"									0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
1 1/4"	0.875"									0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
1 3/4"	0.875"									0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000
2 1/2"	0.875"									0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000
3"	0.875"									0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000




										1/2"-20

										3/4"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000


										1"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	5	000000000	00000
										1 1/4"	0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000
		1 1/2"								0.875"	0.265"	Fully Threaded	70,000	ASME B18.3, ASTM F879	1	000000000	0000

Thread-Locking Stainless Steel Button Head Hex-Drive Screws

Secure parts in place on machinery that experiences mild vibration with these corrosion- and vibration-resistant button head screws. With a nylon-patch threadlocker bonded to the threads, they save you the time and mess of adding it yourself. Made of stainless steel, they won't rust, but they're not as strong as alloy steel. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver.

Length is measured from under 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.

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

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







				2-56

				1/8"	0.164"	0.046"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	000000


				1/4"	0.164"	0.046"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	0000
				3/8"	0.164"	0.046"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	0000




						4-40

						1/8"	0.213"	0.059"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	0000


						3/16"	0.213"	0.059"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
						1/4"	0.213"	0.059"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	000000000	00000
						3/8"	0.213"	0.059"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	000000000	00000
						1/2"	0.213"	0.059"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
						3/4"	0.213"	0.059"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000




								6-32

								3/16"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	0000


								1/4"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	000000000	00000
								5/16"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	0000
								3/8"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	000000000	00000
								1/2"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	000000000	00000
								5/8"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	0000
								3/4"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
								1"	0.262"	0.073"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000




										8-32

										1/4"	0.312"	0.087"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	000000000	00000


										3/8"	0.312"	0.087"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	50	000000000	00000
										1/2"	0.312"	0.087"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	0000
										5/8"	0.312"	0.087"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
										3/4"	0.312"	0.087"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
										1"	0.312"	0.087"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000




												10-24

1/4"												0.361"	0.101"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000


3/8"	0.361"											0.101"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
1/2"	0.361"											0.101"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
5/8"	0.361"	0.101"										Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
3/4"	0.361"	0.101"	Fully Threaded									70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
1"	0.361"	0.101"	Fully Threaded									70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	0000




		10-32

		1/4"	0.361"									0.101"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000


		5/16"	0.361"	0.101"								Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
		3/8"	0.361"	0.101"	Fully Threaded							70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
		1/2"	0.361"	0.101"	Fully Threaded							70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
		5/8"	0.361"	0.101"	Fully Threaded							70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
		3/4"	0.361"	0.101"	Fully Threaded							70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
		1"	0.361"	0.101"	Fully Threaded							70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000




				1/4"-20

				3/16"	0.437"							0.132"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000


				1/4"	0.437"	0.132"						Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
				5/16"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
				3/8"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
				1/2"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	25	000000000	00000
				5/8"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
				3/4"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	0000
				7/8"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
				1"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	0000
				1 1/4"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	0000
				1 1/2"	0.437"	0.132"	Fully Threaded					70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	0000




						5/16"-18

						1/2"	0.547"					0.166"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000


						5/8"	0.547"	0.166"	Fully Threaded			70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	00000
						3/4"	0.547"	0.166"	Fully Threaded			70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000
						1"	0.547"	0.166"	Fully Threaded			70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	10	000000000	00000




								3/8"-16

								1/2"	0.656"			0.199"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	00000


								3/4"	0.656"			0.199"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	00000
								1 1/4"	0.656"	0.199"		Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	5	000000000	00000




										1/2"-13

										3/4"	0.875"	0.265"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	1	000000000	0000


1"										0.875"	0.265"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	1	000000000	0000
1 1/2"	0.875"									0.265"	Fully Threaded	70,000	Nylon Patch	-70 to 250	ASME B18.3, ASTM F879	MIL-DTL-18240	1	000000000	0000




										M3 × 0.5 mm

										6 mm	5.7 mm	1.65 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000


										8 mm	5.7 mm	1.65 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
										10 mm	5.7 mm	1.65 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
										12 mm	5.7 mm	1.65 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000




										M4 × 0.7 mm

										6 mm	7.6 mm	2.2 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000


										8 mm	7.6 mm	2.2 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
										10 mm	7.6 mm	2.2 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
										12 mm	7.6 mm	2.2 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
										16 mm	7.6 mm	2.2 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000




												M5 × 0.8 mm

												8 mm	9.5 mm	2.75 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000


				12 mm	9.5 mm							2.75 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
				16 mm	9.5 mm							2.75 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
				20 mm	9.5 mm							2.75 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000




												M6 × 1 mm

												10 mm	10.5 mm	3.3 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000


						12 mm	10.5 mm					3.3 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
						16 mm	10.5 mm					3.3 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000
						20 mm	10.5 mm					3.3 mm	Fully Threaded	80,000	Nylon Patch	-70 to 250	ASTM F879	MIL-DTL-18240	10	000000000	00000

Stainless Steel Button Head Torx Screws

Our most corrosion-resistant button head Torx screws. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With a deep six-lobe opening, the Torx drive prevents your driver from slipping and stripping the drive. Also known as star drives, they withstand more torque than slotted, Phillips, and hex drives.

Length is measured from under 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.

		Head
	Lg.	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				6-32

				1 1/2"	0.262"	0.073"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	00000




						8-32

						5/16"	0.312"	0.087"	Fully Threaded	60,000	ASME B18.3, ASTM F879	100	000000000	0000


						1 1/4"	0.312"	0.087"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	00000
						1 1/2"	0.312"	0.087"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	0000




								10-24

								3/8"	0.361"	0.101"	Fully Threaded	60,000	ASME B18.3, ASTM F879	100	000000000	00000


								1/2"	0.361"	0.101"	Fully Threaded	60,000	ASME B18.3, ASTM F879	100	000000000	00000
								3/4"	0.361"	0.101"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	0000
								1"	0.361"	0.101"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	00000
								1 1/2"	0.361"	0.101"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	00000




										10-32

										1"	0.361"	0.101"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	00000




												1/4"-20

												1/4"	0.437"	0.132"	Fully Threaded	60,000	ASME B18.3, ASTM F879	50	000000000	0000


												2"	0.437"	0.132"	Fully Threaded	60,000	ASME B18.3, ASTM F879	10	000000000	0000




														5/16"-18

														1 1/2"	0.547"	0.166"	Fully Threaded	60,000	ASME B18.3, ASTM F879	10	000000000	0000


														2"	0.547"	0.166"	Fully Threaded	60,000	ASME B18.3, ASTM F879	10	000000000	00000




	3/8"-16

	2"														0.656"	0.199"	Fully Threaded	60,000	ASME B18.3, ASTM F879	5	000000000	0000