Master Links

S-247: The specific product model series for Crosby Double Clevis Links.5/16 and 3/8: Indicates that this single connector is dual-rated to secure both 5/16-inch and 3/8-inch industrial chains.163: References Page 163 of the legacy Kito Crosby Corporate Catalog where the S-247 engineering metrics, ultimate load tables, and dimensional charts are published.

Chain Compatibility: Optimized for use with 1/4-inch to 5/16-inch transport chain systems. It is fully compatible with Grade 30, Grade 43, and Spectrum 7® Grade 70 chains. Working Load Limit (WLL): Rated for a maximum load capacity of 4,700 lbs. Safety Factor: Features a design safety factor of 4:1 for standard configurations. Materials & Construction: The primary body is crafted from forged, heat-treated carbon steel, while the alloy steel connection pins are thoroughly quenched and tempered for extreme durability.

Working Load Limit (WLL): 6,600 lbs (3.3 tons) Material: Forged and heat-treated carbon steel body with quenched and tempered alloy steel pins Design Factor: 4:1 ultimate strength (ultimate load is 4 times the WLL) Chain Compatibility: Approved for use with Grade 3, Grade 4, and Grade 7 (Transport) chains

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)