5⁄8"-11 Thread Rounded Head Screws

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60,000 psi to 79,999 psi

120,000 psi or greater

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EAR99

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103 Products

Steel Button Head Hex-Drive Screws

Made of alloy steel, these screws have nearly twice the tensile strength of other 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.

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.	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Alloy Steel







				5/8"-11

				3/4"	1"	0.331"	Fully Threaded	120,000	ASME B18.3, ASTM F835	1	91255A797	00000


				1 3/4"	1"	0.331"	Fully Threaded	120,000	ASME B18.3, ASTM F835	5	91255A810	0000
				2 1/2"	1"	0.331"	Fully Threaded	120,000	ASME B18.3, ASTM F835	1	91255A056	0000
				3"	1"	0.331"	Fully Threaded	120,000	ASME B18.3, ASTM F835	1	91255A057	0000


				Zinc-Plated Alloy Steel







								5/8"-11

								1"	1"	0.331"	Fully Threaded	130,000	ASME B18.3, ASTM F835	5	91306A445	00000


								1 1/2"	1"	0.331"	Fully Threaded	130,000	ASME B18.3, ASTM F835	1	91306A448	0000
								2"	1"	0.331"	Fully Threaded	130,000	ASME B18.3, ASTM F835	1	91306A452	0000

Square-Neck Oval-Head Plow Bolts


	Fully Threaded	Partially Threaded

These bolts have a thicker, domed head that provides greater wear resistance than flat head bolts. Used on heavy equipment, such as plows, these bolts are angled under the head to sit nearly flush within countersunk holes. A square neck keeps them from turning when tightening a nut. The zinc yellow-chromate plating provides corrosion resistance in wet environments. Material meets SAE J429 specifications for quality. Length is measured from the base of the oval top. Head height includes the neck and oval top.

					Head
	Lg.	Threading	Min. Thread Lg.	Thread Spacing	Dia.	Ht.	Oval Top Ht.	Countersink Angle	Neck Wd.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Yellow-Chromate-Plated SAE Grade 8 Steel







				5/8"-11 Threads

				1 1/2"	Fully Threaded	—	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	10	90934A778	000000


				2"	Fully Threaded	—	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	10	90934A802	00000
				2 1/4"	Fully Threaded	—	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	10	90934A803	00000
				2 1/2"	Partially Threaded	1 1/2"	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	5	90934A804	00000
				2 3/4"	Partially Threaded	1 1/2"	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	1	90934A911	0000
				3"	Partially Threaded	1 1/2"	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	5	90934A806	00000
				3 1/2"	Partially Threaded	1 1/2"	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	5	90934A808	00000
				4"	Partially Threaded	1 1/2"	Coarse	1.044"	0.616"	0.1"	82°	0.64"	150,000	SAE J429	1	90934A921	0000

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	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				5/8"-11

				1"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	92949A763	00000


				1 1/4"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	92949A354	0000
				1 1/2"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	92949A765	0000
				1 3/4"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	92949A355	0000
				2"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	Material Certificate	1	92949A769	0000
				2 1/2"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	92949A356	0000


				Highly Corrosion-Resistant 316 Stainless Steel







								5/8"-11

								1"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	Material Certificate	1	98164A470	0000


								1 1/4"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	Material Certificate	1	98164A914	0000
								1 1/2"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	98164A471	0000
								2"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	98164A915	0000
								2 1/2"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	—	1	98164A916	0000
								3"	1"	0.331"	Fully Threaded	70,000	ASME B18.3	Material Certificate	1	98164A917	00000

Low-Strength Steel Square-Neck Carriage Bolts


	Fully Threaded	Partially Threaded

About half the strength of medium-strength bolts, these Grade 2 bolts are for light duty fastening. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Material meets ASTM A307 or SAE J429 specifications for quality. Dimensions meet ASME B18.5 specifications. Length is measured from under the head.

Zinc Plated—Zinc-plated steel bolts resist corrosion in wet environments.

Hot-Dipped Galvanized—Hot-dipped galvanized steel bolts have a thick coating for better corrosion resistance than zinc-plated steel bolts. They meet ASTM A153 specifications for quality of hot-dipped coatings. They’re a good choice for ACQ-treated (arsenic-free) lumber. Bolts must be used with hot-dipped galvanized steel nuts (sold separately).

	Bolts													Hex Nuts
					Head		Neck
	Lg.	Threading	Min. Thread Lg.	Thread Spacing	Dia.	Ht.	Wd.	Lg.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
Zinc-Plated SAE Grade 2 Steel







				5/8"-11

				2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	10	93548A802	000000	—	———	0


				2 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	10	93548A804	00000	—	———	0
				3"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	10	93548A806	00000	—	———	0
				3 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	10	93548A808	00000	—	———	0
				4"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	5	93548A810	0000	—	———	0
				4 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	5	93548A812	00000	—	———	0
				5"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	5	93548A814	00000	—	———	0
				6"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	5	93548A822	00000	—	———	0
				8"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	5	93548A831	00000	—	———	0
				10"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	1	93548A842	00000	—	———	0
				12"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A307, SAE J429	1	93548A851	00000	—	———	0


				Hot-Dipped Galvanized SAE Grade 2 Steel







								5/8"-11

								2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	10	93604A753	00000	25	90371A050	000000


								2 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	10	93604A755	00000	25	90371A050	00000
								3"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	10	93604A757	00000	25	90371A050	00000
								4"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	5	93604A761	00000	25	90371A050	00000
								4 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	5	93604A763	00000	25	90371A050	00000
								5"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	5	93604A765	00000	25	90371A050	00000
								6"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	5	93604A767	00000	25	90371A050	00000
								8"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	1	93604A769	0000	25	90371A050	00000
								10"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	1	93604A773	0000	25	90371A050	00000
								12"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	1	93604A777	00000	25	90371A050	00000
								14"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	1	93604A780	00000	25	90371A050	00000


								16"	Partially Threaded	1 3/4"	Coarse	1.344"	0.344"	0.64"	0.34"	60,000	ASME B18.5, ASTM A153, ASTM A307	1	93604A783	00000	25	90371A050	00000

Medium-Strength Grade 5 Steel Square-Neck Carriage Bolts


	Fully Threaded	Partially Threaded

Made from Grade 5 steel, these bolts are suitable for fastening most machinery and equipment. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Grade 5 steel bolts are marked with three radial lines. Material meets SAE J429 specifications for quality. Dimensions meet ASME B18.5 specifications. Length is measured from under the head.

Black Oxide—Black-oxide steel bolts are mildly corrosion resistant in dry environments.

Zinc Plated—Zinc-plated steel bolts resist corrosion in wet environments.

				Head		Neck						Pkg.
	Lg.	Threading	Thread Spacing	Dia.	Ht.	Wd.	Lg.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		1-24	25-99	100-Up
Black-Oxide SAE Grade 5 Steel







				5/8"-11

				1 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A149	00000	00000	00000


				1 3/4"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A150	00000	00000	0000
				2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A151	0000	0000	0000
				3"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A152	0000	0000	0000
				3 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A153	0000	0000	0000
				4"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A154	00000	0000	0000
				6"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A155	00000	00000	00000


				Zinc-Plated SAE Grade 5 Steel







								5/8"-11

								1 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A437	00000	00000	0000


								1 3/4"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A438	00000	00000	00000
								2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	10	90185A810	00000	00000	00000
								2 1/4"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A256	0000	0000	0000
								2 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A814	00000	00000	00000
								2 3/4"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A257	0000	0000	0000
								3"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A818	00000	00000	00000
								3 1/4"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A258	0000	0000	0000
								3 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A822	00000	00000	00000
								4"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A826	00000	00000	00000
								4 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A830	00000	00000	00000


								5"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A834	00000	00000	00000
								5 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A259	0000	0000	0000
								6"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	5	90185A838	00000	00000	00000
								7"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A260	0000	0000	0000
								8"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A261	00000	0000	0000
								8 1/2"	Partially Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A262	0000	0000	0000
								9"	Partially Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A263	0000	0000	0000
								9 1/2"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A264	00000	0000	0000
								10"	Fully Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A265	00000	0000	0000
								11"	Partially Threaded	Coarse	1.344"	0.344"	0.64"	0.34"	120,000	ASME B18.5, SAE J429	1	90185A266	00000	00000	0000

Brass Button Head Hex-Drive Screws

These button head screws have a shiny look and won't rust in damp environments. Made of brass, they're also conductive and nonmagnetic, making them useful for electrical applications. 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.

		Head
	Lg.	Dia.	Ht.	Threading	Tensile Strength, psi	Pkg. Qty.		Pkg.
Brass







				5/8"-11

				3/4"	1"	0.331"	Fully Threaded	50,000	1	97715A639	000000


				1"	1"	0.331"	Fully Threaded	50,000	1	97715A640	00000

Highly Corrosion-Resistant 316 Stainless Steel Square-Neck Carriage Bolts


	Fully Threaded	Partially Threaded

More corrosion resistant than 18-8 stainless steel bolts, these 316 stainless steel bolts have excellent resistance to chemicals and salt water and are a good choice for ACQ-treated (arsenic-free) lumber. They may be mildly magnetic. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Dimensions meet ASME B18.5 or DIN 603 specifications. Length is measured from under the head.

					Head		Neck
	Lg.	Threading	Min. Thread Lg.	Thread Spacing	Dia.	Ht.	Wd.	Lg.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
316 Stainless Steel







				5/8"-11

				4"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	93180A733	000000


				5"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	93180A742	00000
				6"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	93180A753	00000
				7"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	93180A761	00000

18-8 Stainless Steel Square-Neck Carriage Bolts


	Fully Threaded	Partially Threaded

Made from 18-8 stainless steel, these bolts have good chemical resistance and may be mildly magnetic. They're a good choice for ACQ-treated (arsenic-free) lumber. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Length is measured from under the head. Dimensions meet ASME B18.5 or DIN 603 specifications. Some also meet ISO 8678. DIN 603 is functionally equivalent to ISO 8678 with slight differences in head diameter, head height, and length tolerances.

Match the thread spacing of mating components.

Coarse Thread—Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch.

					Head		Neck
	Lg.	Threading	Min. Thread Lg.	Thread Spacing	Dia.	Ht.	Wd.	Lg.	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				5/8"-11

				1 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A119	00000


				1 3/4"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A121	0000
				2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A802	0000
				2 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A804	0000
				3"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A806	0000
				3 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A808	0000
				4"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A810	0000
				4 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A812	0000
				5"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A814	0000
				5 1/2"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A186	0000
				6"	Fully Threaded	—	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A818	0000


				6 1/2"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A187	0000
				7"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A820	0000
				7 1/2"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A188	0000
				8"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A189	0000
				8 1/2"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A191	0000
				9"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A192	0000
				10"	Partially Threaded	1"	Coarse	1.344"	0.344"	0.64"	0.34"	70,000	ASME B18.5	1	92356A193	0000