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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 Hex Head Screws
 |
Partially Threaded |
Our most popular hex head screws. These have a head with six flat sides to 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.
High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Threading | Thread Spacing | Fastener Strength Grade/Class | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
Medium-Strength Steel | |||||||||||
1 3/4"-5 | |||||||||||
| 5" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A552 | 000000 | ||
| 6" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A554 | 00000 | ||
| 8" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A576 | 00000 | ||
High-Strength Steel | |||||||||||
1 3/4"-5 | |||||||||||
| 6" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 1 | 91268A450 | 00000 | ||
| 8" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 1 | 91268A460 | 00000 | ||
| 10" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 1 | 91268A470 | 00000 | ||
Steel Socket Head Screws
 |
Fully Threaded |
 |
Partially Threaded |
Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.
Length is measured from under the head.
Black-Oxide Alloy Steel—Best for dry environments since moisture will cause these screws to rust. They have a dark, matte appearance.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | ||||||||||
1 3/4"-5 | ||||||||||
| 4" | 2 5/8" | 1 3/4" | Fully Threaded | Coarse | 170,000 | 1 | 90044A213 | 000000 | ||
| 6" | 2 5/8" | 1 3/4" | Partially Threaded | Coarse | 170,000 | 1 | 90044A214 | 00000 | ||
| 8" | 2 5/8" | 1 3/4" | Partially Threaded | Coarse | 170,000 | 1 | 90044A215 | 00000 | ||
| 10" | 2 5/8" | 1 3/4" | Partially Threaded | Coarse | 170,000 | 1 | 90044A216 | 00000 | ||
Stainless Steel Hex Head Screws
Threaded Rods
Medium-Strength Steel
 |
With tensile strengths from 110,000 psi to 125,000 psi, these rods are strong enough for most industrial applications, such as anchoring machinery and connecting pipe flanges. They are about twice as strong as low-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also medium-strength steel.
Steel—Best for dry environments since moisture will cause these rods to rust.
Lg., ft. | Tensile Strength, psi | Fastener Strength Grade/Class | Hardness | Specs. Met | Each | |||
|---|---|---|---|---|---|---|---|---|
Steel | ||||||||
1 3/4"-5 | ||||||||
| 1 | 125,000 | ASTM Grade B7 | Rockwell C35 | ASTM A193 | 98957A514 | 000000 | ||
| 2 | 125,000 | ASTM Grade B7 | Rockwell C35 | ASTM A193 | 98957A826 | 000000 | ||
| 3 | 125,000 | ASTM Grade B7 | Rockwell C35 | ASTM A193 | 98957A648 | 000000 | ||
| 6 | 125,000 | ASTM Grade B7 | Rockwell C35 | ASTM A193 | 98957A748 | 000000 | ||
| 12 | 125,000 | ASTM Grade B7 | Rockwell C35 | ASTM A193 | 98957A044 | 000000 | ||
High-Strength Steel
|
With a tensile strength of 150,000 psi, these rods are strong enough to stabilize steel frameworks and structural supports, such as I-beams. They are about 25% stronger than medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also high-strength steel.
Steel—Best for dry environments since moisture will cause these rods to rust.
Lg., ft. | Tensile Strength, psi | Fastener Strength Grade/Class | Hardness | Specs. Met | Each | |||
|---|---|---|---|---|---|---|---|---|
Steel | ||||||||
1 3/4"-5 | ||||||||
| 1 | 150,000 | ASTM Grade BD | Rockwell C33 | ASTM A354 Grade BD | 90322A697 | 0000000 | ||
| 2 | 150,000 | ASTM Grade BD | Rockwell C33 | ASTM A354 Grade BD | 90322A698 | 000000 | ||
| 3 | 150,000 | ASTM Grade BD | Rockwell C33 | ASTM A354 Grade BD | 90322A699 | 000000 | ||
| 6 | 150,000 | ASTM Grade BD | Rockwell C33 | ASTM A354 Grade BD | 90322A700 | 000000 | ||
Swivel-Under-Load Hoist Rings—For Lifting
 |
 |
180° Pivot |
 |
360° Swivel |
The ball bearing on these hoist rings makes it easy to rotate your load even after it’s suspended. For unbalanced or heavy loads, the base also swivels to compensate for pitch, roll, and sway. Their lifting ring pivots 180° front to back. Ideal for angular lifting, these hoist rings withstand stresses that bend or break eyebolts.
Install the base of these hoist rings flush to your mounting surface. Use a torque wrench to tighten to the recommended torque stamped on the ring.
Note: Capacities listed are for vertical lifting only. As the lift angle changes from vertical, the amount of weight the hoist ring can lift is significantly reduced. For example, when lifting a 1,000 lb. load at a 45° angle, you must choose a hoist ring with a capacity of at least 1,400 lbs. Do not use at an angle less than 30°.
Warning: Never use to lift people or items over people.
Thread Size | Thread Lg. | Inside Wd. | Overall Ht. | Vert. Cap., lb. | Movement | Specs. Met | Certification | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Forged Yellow Powder-Coated Steel | |||||||||||
| 1 3/4"-5 | 2 5/8" | 2 3/4" | 13 1/4" | 28,210 | 180° Pivot and 360° Swivel | ASME B30.26 | CE Marked | 4137N32 | 000000000 | ||
Eyebolts—For Lifting
Steel
 |  |
With Shoulder | Without Shoulder |
With Shoulder—Use for lifting at angles up to 45° or for vertical lifting. Because angular lifting significantly reduces the eyebolt’s capacity, we recommend hoist rings for heavy loads.
Without Shoulder—For vertical lifting only.
Zinc-Plated Steel
 |  |
With Shoulder | Without Sholder |
Zinc-plated steel eyebolts offer good corrosion resistance.
With Shoulder—Use for lifting at angles up to 45° or for vertical lifting. Because angular lifting significantly reduces the eyebolt’s capacity, we recommend hoist rings for heavy loads.
Without Shoulder—For vertical lifting only.
