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About Hex Head Screws and Bolts
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Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.
Steel Wire-Locking Hex Head Screws
 |
 |
Fully Threaded |
 |
Partially Threaded |
One of our most vibration-resistant steel hex head screws. These won't come loose even in moderate to heavy vibration. To lock them in place, secure a wire (sold separately) through the hole in their head. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.
Length is measured from under the head.
Medium-Strength Fastener—Your go-to screws for fastening most machinery and equipment. They have tensile strengths from 90,000 to 120,000 psi.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Black-Oxide 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.
Screws | Steel Wire | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | ||||||||||||||
Lg. | Wd. | Ht. | Hole Dia. | Threading | Thread Spacing | Fastener Strength Grade/Class | Tensile Strength, psi | Pkg. Qty. | Pkg. | Each | ||||
Medium-Strength Zinc-Plated Steel | ||||||||||||||
1/4"-20 | ||||||||||||||
| 1/2" | 7/16" | 11/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 10 | 90124A537 | 000000 | 8870K14 | 00000 | ||
| 5/8" | 7/16" | 11/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 10 | 90124A539 | 00000 | 8870K14 | 0000 | ||
| 3/4" | 7/16" | 11/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 10 | 90124A540 | 00000 | 8870K14 | 0000 | ||
| 1" | 7/16" | 11/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 10 | 90124A542 | 00000 | 8870K14 | 0000 | ||
5/16"-18 | ||||||||||||||
| 3/4" | 1/2" | 7/32" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 10 | 90124A581 | 00000 | 8870K14 | 0000 | ||
| 7/8" | 1/2" | 7/32" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 10 | 90124A582 | 00000 | 8870K14 | 0000 | ||
| 1" | 1/2" | 7/32" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A583 | 0000 | 8870K14 | 0000 | ||
| 1 1/2" | 1/2" | 7/32" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A587 | 00000 | 8870K14 | 0000 | ||
3/8"-16 | ||||||||||||||
| 3/4" | 9/16" | 1/4" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A622 | 0000 | 8870K14 | 0000 | ||
| 1" | 9/16" | 1/4" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A624 | 00000 | 8870K14 | 0000 | ||
| 1 1/4" | 9/16" | 1/4" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A626 | 00000 | 8870K14 | 0000 | ||
| 1 1/2" | 9/16" | 1/4" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A628 | 00000 | 8870K14 | 0000 | ||
| 2" | 9/16" | 1/4" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A632 | 00000 | 8870K14 | 0000 | ||
| 2 1/2" | 9/16" | 1/4" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A345 | 0000 | 8870K14 | 0000 | ||
| 3" | 9/16" | 1/4" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A636 | 00000 | 8870K14 | 0000 | ||
1/2"-13 | ||||||||||||||
| 3/4" | 3/4" | 11/32" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A710 | 00000 | 8870K12 | 0000 | ||
| 1" | 3/4" | 11/32" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A712 | 00000 | 8870K12 | 0000 | ||
| 1 1/4" | 3/4" | 11/32" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A714 | 00000 | 8870K12 | 0000 | ||
| 1 1/2" | 3/4" | 11/32" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A716 | 00000 | 8870K12 | 0000 | ||
| 1 3/4" | 3/4" | 11/32" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A718 | 0000 | 8870K12 | 0000 | ||
| 2" | 3/4" | 11/32" | 0.109" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A720 | 0000 | 8870K12 | 0000 | ||
| 4 1/2" | 3/4" | 11/32" | 0.109" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A344 | 00000 | 8870K12 | 0000 | ||
5/8"-11 | ||||||||||||||
| 1 1/2" | 15/16" | 27/64" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A798 | 0000 | 8870K29 | 0000 | ||
| 1 3/4" | 15/16" | 27/64" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A800 | 0000 | 8870K29 | 0000 | ||
| 2" | 15/16" | 27/64" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A802 | 0000 | 8870K29 | 0000 | ||
| 2 1/2" | 15/16" | 27/64" | 0.156" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A804 | 0000 | 8870K29 | 0000 | ||
3/4"-10 | ||||||||||||||
| 2" | 1 1/8" | 1/2" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A843 | 0000 | 8870K29 | 0000 | ||
| 2 1/4" | 1 1/8" | 1/2" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A844 | 0000 | 8870K29 | 0000 | ||
| 3" | 1 1/8" | 1/2" | 0.156" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A847 | 00000 | 8870K29 | 0000 | ||
Medium-Strength Black-Oxide Steel | ||||||||||||||
1/4"-20 | ||||||||||||||
| 1/2" | 7/16" | 5/32" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A311 | 0000 | 8870K14 | 0000 | ||
| 5/8" | 7/16" | 5/32" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A312 | 0000 | 8870K14 | 0000 | ||
| 3/4" | 7/16" | 5/32" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A313 | 0000 | 8870K14 | 0000 | ||
| 1" | 7/16" | 5/32" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A314 | 0000 | 8870K14 | 0000 | ||
| 1 1/4" | 7/16" | 5/32" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A315 | 00000 | 8870K14 | 0000 | ||
| 1 1/2" | 7/16" | 5/32" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A316 | 00000 | 8870K14 | 0000 | ||
5/16"-18 | ||||||||||||||
| 3/4" | 1/2" | 13/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A317 | 00000 | 8870K14 | 0000 | ||
| 1" | 1/2" | 13/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 5 | 90124A319 | 00000 | 8870K14 | 0000 | ||
| 1 1/2" | 1/2" | 13/64" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A321 | 0000 | 8870K14 | 0000 | ||
3/8"-16 | ||||||||||||||
| 3/4" | 9/16" | 15/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A322 | 0000 | 8870K14 | 0000 | ||
| 1" | 9/16" | 15/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A323 | 0000 | 8870K14 | 0000 | ||
| 1 1/4" | 9/16" | 15/64" | 0.063" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A324 | 0000 | 8870K14 | 0000 | ||
| 1 1/2" | 9/16" | 15/64" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A325 | 0000 | 8870K14 | 0000 | ||
| 2" | 9/16" | 15/64" | 0.063" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A326 | 0000 | 8870K14 | 0000 | ||
1/2"-13 | ||||||||||||||
| 3/4" | 3/4" | 5/16" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A329 | 0000 | 8870K12 | 0000 | ||
| 1" | 3/4" | 5/16" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A331 | 0000 | 8870K12 | 0000 | ||
| 1 1/4" | 3/4" | 5/16" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A332 | 0000 | 8870K12 | 0000 | ||
| 1 1/2" | 3/4" | 5/16" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A333 | 0000 | 8870K12 | 0000 | ||
| 1 3/4" | 3/4" | 5/16" | 0.109" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A334 | 0000 | 8870K12 | 0000 | ||
| 2" | 3/4" | 5/16" | 0.109" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A335 | 0000 | 8870K12 | 0000 | ||
5/8"-11 | ||||||||||||||
| 1 1/2" | 15/16" | 25/64" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A336 | 0000 | 8870K29 | 0000 | ||
| 2 1/2" | 15/16" | 25/64" | 0.156" | Partially Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A339 | 0000 | 8870K29 | 0000 | ||
3/4"-10 | ||||||||||||||
| 2" | 1 1/8" | 15/32" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A341 | 0000 | 8870K29 | 0000 | ||
| 2 1/4" | 1 1/8" | 15/32" | 0.156" | Fully Threaded | Coarse | SAE Grade 5 | 120,000 | 1 | 90124A342 | 0000 | 8870K29 | 0000 | ||
Stainless Steel Wire-Locking Hex Head Screws
 |  |  |
Fully Threaded | Partially Threaded |
Withstand more vibration than other corrosion-resistant hex head screws we offer. These won't come loose even in moderate to heavy vibration. To lock them in place, secure a wire (sold separately) through the hole in their head. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.
Length is measured form 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 screws can.
Screws | Stainless Steel Wire | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | ||||||||||||
Lg. | Wd. | Ht. | Hole Dia. | Threading | Thread Spacing | Tensile Strength, psi | Each | Each | ||||
18-8 Stainless Steel | ||||||||||||
1/4"-20 | ||||||||||||
| 1/2" | 7/16" | 5/32" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A537 | 00000 | 8860K14 | 00000 | ||
| 3/4" | 7/16" | 5/32" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A540 | 0000 | 8860K14 | 0000 | ||
| 1" | 7/16" | 5/32" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A542 | 0000 | 8860K14 | 0000 | ||
| 1 1/2" | 7/16" | 5/32" | 0.063" | Partially Threaded | Coarse | 70,000 | 90121A546 | 0000 | 8860K14 | 0000 | ||
5/16"-18 | ||||||||||||
| 3/4" | 1/2" | 13/64" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A581 | 0000 | 8860K14 | 0000 | ||
| 1" | 1/2" | 13/64" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A583 | 0000 | 8860K14 | 0000 | ||
| 1 1/2" | 1/2" | 13/64" | 0.063" | Partially Threaded | Coarse | 70,000 | 90121A587 | 0000 | 8860K14 | 0000 | ||
3/8"-16 | ||||||||||||
| 3/4" | 9/16" | 15/64" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A622 | 0000 | 8860K14 | 0000 | ||
| 1" | 9/16" | 15/64" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A624 | 0000 | 8860K14 | 0000 | ||
| 1 1/4" | 9/16" | 15/64" | 0.063" | Fully Threaded | Coarse | 70,000 | 90121A626 | 0000 | 8860K14 | 0000 | ||
1/2"-13 | ||||||||||||
| 1 1/2" | 3/4" | 5/16" | 0.109" | Fully Threaded | Coarse | 70,000 | 90121A716 | 0000 | 8860K16 | 0000 | ||
Venting Stainless Steel Hex Head Screws
 |  |
Fully Threaded | Partially Threaded |
Prevent the buildup of pressure or vacuum in sealed spaces. The hole in the center of these corrosion-resistant screws allows air, gas, and fluid to escape. They are often used to equalize pressure from high temperatures during coating, curing, and heating. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.
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 screws can.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Vent Dia. | Threading | Thread Spacing | Tensile Strength, psi | Each | |||
18-8 Stainless Steel | ||||||||||
1/4"-20 | ||||||||||
| 1/2" | 7/16" | 5/32" | 0.062" | Fully Threaded | Coarse | 70,000 | 90220A110 | 00000 | ||
| 3/4" | 7/16" | 5/32" | 0.062" | Fully Threaded | Coarse | 70,000 | 90220A120 | 0000 | ||
| 1" | 7/16" | 5/32" | 0.062" | Fully Threaded | Coarse | 70,000 | 90220A130 | 0000 | ||
5/16"-18 | ||||||||||
| 3/4" | 1/2" | 13/64" | 0.078" | Fully Threaded | Coarse | 70,000 | 90220A140 | 0000 | ||
| 1" | 1/2" | 13/64" | 0.078" | Fully Threaded | Coarse | 70,000 | 90220A150 | 0000 | ||
| 1 1/2" | 1/2" | 13/64" | 0.078" | Partially Threaded | Coarse | 70,000 | 90220A160 | 00000 | ||
3/8"-16 | ||||||||||
| 3/4" | 9/16" | 15/64" | 0.093" | Fully Threaded | Coarse | 70,000 | 90220A170 | 0000 | ||
| 1" | 9/16" | 15/64" | 0.093" | Fully Threaded | Coarse | 70,000 | 90220A180 | 0000 | ||
| 1 1/2" | 9/16" | 15/64" | 0.093" | Partially Threaded | Coarse | 70,000 | 90220A190 | 00000 | ||
1/2"-13 | ||||||||||
| 1" | 3/4" | 5/16" | 1/8" | Fully Threaded | Coarse | 70,000 | 90220A210 | 00000 | ||
| 1 1/2" | 3/4" | 5/16" | 1/8" | Fully Threaded | Coarse | 70,000 | 90220A220 | 00000 | ||
| 2" | 3/4" | 5/16" | 1/8" | Partially Threaded | Coarse | 70,000 | 90220A230 | 00000 | ||
