System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Type Thread Type |
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Head Type Head Type |
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![]() | Socket |
Threading Threading |
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![]() | Fully Threaded |
![]() | Partially Threaded |
Material Material |
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Finish Finish |
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Vertical Capacity Vertical Capacity |
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Thread Fit Thread Fit |
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Drive Style Drive Style |
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Socket Head Profile Socket Head Profile |
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![]() | Standard |
Hardness Hardness |
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Tensile Strength Tensile Strength |
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Specifications Met Specifications Met |
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Drive Size Drive Size |
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Thread Spacing Thread Spacing |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Thread Direction Thread Direction |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Lifting with Hoist Rings
More
About Socket Head Screws
More
Alloy Steel Socket Head Screws


With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.
Black and black-oxide steel screws are mildly corrosion resistant in dry environments. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
2 1/2"-8 | |||||||||||
Black-Oxide Alloy Steel | |||||||||||
4" | Fully Threaded | __ | Fine | 3 3/4" | 2 1/2" | 1 3/4" | 170,000 | ASTM A574 | 1 | 000000000 | 0000000 |
6" | Fully Threaded | __ | Fine | 3 3/4" | 2 1/2" | 1 3/4" | 170,000 | ASTM A574 | 1 | 000000000 | 000000 |
8" | Partially Threaded | 6 1/4" | Fine | 3 3/4" | 2 1/2" | 1 3/4" | 170,000 | ASTM A574 | 1 | 000000000 | 000000 |
10" | Partially Threaded | 6 1/4" | Fine | 3 3/4" | 2 1/2" | 1 3/4" | 170,000 | ASTM A574 | 1 | 000000000 | 000000 |
Hoist Rings—For Lifting




Designed for angular lifting, hoist rings resist stresses that would bend or break an eyebolt. They have a lifting ring that pivots 180° front to back and a base that swivels 360° to compensate for pitch, roll, and sway when lifting heavy or unbalanced loads. Install the base of the hoist ring flush to the mounting surface and tighten to the recommended torque that is stamped on the ring. Torque Wrenches are sold separately.
Machined hoist rings have a smooth finish to protect slings and hooks from damage and excess wear during lifting.
Black-oxide steel offers mild corrosion resistance.
Hoist rings that are CE marked meet European requirements for health, safety, and environmental protection.
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.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Inside Wd. | Overall Ht. | Vertical Capacity, lbs. | Movement | Specifications Met | Each | |
Machined Black-Oxide Steel | ||||||||
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2 1/2"-8 | 4" | 6" | 20 7/8" | 50,000 | 180° Pivot and 360° Swivel | ASME B30.26, CE Marked, MIL-STD-1365, MIL-STD-209 | 00000000 | 000000000 |