US type drop forged jaw turnbuckle, also known as American standard forged turnbuckle, is a heavy-duty industrial rigging fastener widely used in global heavy industry, marine and engineering rigging fields. It adopts high-quality carbon steel one-piece hot die forging process, with precision integral forming, high structural density and excellent impact resistance.
After precision forging and heat treatment, the surface is electro-galvanized or hot-dip galvanized for outstanding rust prevention, corrosion resistance and long service life. This professional open-body turnbuckle is designed for high-strength tension adjustment of wire ropes, chains, cables and pull rods. It meets strict industrial load standards and is widely used in overhead lifting, heavy load tensioning, ship ports, mining, construction, oilfield and other harsh working condition scenarios.
2. Specifications and Parameters

• Size range & types

◦ Standard thread specifications: 1/4″ – 2″ (mainstream market common sizes: 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″)

◦ Common end configurations:

◦ JJ / Jaw-Jaw type (double clevis / fork & fork)

◦ JE / Jaw-Eye type (fork + ring)

◦ EE / Eye-Eye type (double ring)

◦ JH / Jaw-Hook type (fork + hook)

◦ Open body thickened design, large adjustable extension range, convenient for on-site length fine calibration

• Load & performance

◦ Rated Working Load Limit (WLL): 0.5T – 20T, matched to different inch size specifications

◦ Safety factor: Standard 5:1 design, ultimate breaking load is 5 times the rated working tension

◦ Surface treatment: Standard electro-galvanized, customizable hot-dip galvanized for marine and outdoor coastal high-corrosion environments

◦ Core advantages: High tensile strength, not easy to deform under heavy load, high toughness, fatigue resistance, stable performance under dynamic load and impact load
3. Application Areas

• Heavy industrial & lifting engineering: overhead lifting operation, steel structure tensioning, large equipment hoisting and fixing

• Marine & port industry: ship rigging, dock mooring line tightening, port loading and unloading equipment stay adjustment

• Construction & mining industry: bridge and building stay cable tension, mining machinery reinforcement, engineering temporary load support

• Oilfield & energy field: pipeline fastening, rig fixing, heavy equipment permanent tension positioning

• Professional rigging matching: perfectly matched with forged shackles, high-grade chains, wire rope clips and thimbles for heavy-duty professional rigging connection

⚠️ Important Reminder
US type drop forged turnbuckle is a professional lifting-grade rigging component, suitable for static heavy tension, dynamic load and overhead lifting operations. NOT suitable to be replaced with low-grade malleable cast iron turnbuckles for heavy hoisting work. For general civil static fastening scenarios, you can choose cost-effective cast malleable iron turnbuckles.