Crosby Group

Working Load Limit (WLL): 11,300 lbs (5.13 metric tons) Design Factor: 4:1 safety ratio (ultimate strength is 4 times the WLL) Material: Quenched and tempered forged carbon steel body with alloy steel pins Chain Compatibility: Designed for Grade 3, Grade 4, and Grade 7 (Transport)

Crosby S-314A Clevis Chain Hooks are made from forged alloy steel - quenched and tempered. This hook features a heavy-duty latch and has a large throat opening.
Specifications:

Chain Size: 1/4"-5/16"
Replacement Latch: 307-1291402
Working Load Limit: 4500 lbs (2 tons)
Design Factor 4:1

The Crosby S-314A 3/8" is a high-strength, Grade 80 alloy steel clevis sling hook featuring an integrated heavy-duty latch. It is manufactured by Kito Crosby and specifically engineered for secure overhead lifting, rigging, and alloy chain sling assemblies.

The Crosby S-317A 1/2" (often labeled under the manufacturer catalog code CROS317A1/2 or stock sequence) refers to a 1/2-inch Forged Alloy Steel Hoist Hook. Forged by Kito Crosby, this heavy-duty rigging component is quenched and tempered, built explicitly to handle critical vertical lifting and pulling applications with Grade 80 or Grade 100 alloy chain slings.>

Working Load Limit (WLL): 6,500 lbs (2.95 tons), Material: Forged carbon steel. Manufacturing Process: Quenched and tempered for optimal fatigue and impact strength. Design Factor: 5:1 safety margin. Finish: Self-colored (painted/uncoated steel).

Trade Size: 3/8"Working Load Limit (WLL): 1,800 lbs (0.82 tons) for inline pull Material: Forged carbon steel (Quenched and Tempered) Finish: Self-colored / painted Design Factor: 6:1

Chain Diameter: 1/4 inch Sling Reach (Length): 5 feet (measured bearing point to bearing point) Material Grade: Grade 100 Alloy Steel (engineered for high strength and optimized for safe overhead lifting) Working Load Limit (WLL): 4,300 lbs when used at a 90-degree lifting angle