All About G80 Clevis Hooks: Specs, Uses, Advantages & Safety Tips

An Introduction to G80 Clevis Hooks

Clevis hooks are an important tool used in rigging, lifting, and securing loads. The G80 is a high strength alloy steel clevis hook that provides superior performance in demanding applications. In this article, we'll take an in-depth look at G80 clevis hooks - their design, specifications, uses, and advantages over other types of clevis hooks.

What is a G80 Clevis Hook?

A G80 clevis hook is a type of clevis sling hook that meets ASME B30.26 specifications. Clevis hooks consist of a U-shaped shank with a clevis at one end to attach rigging and lifting hardware. The G80 designation indicates the hook is made from high strength alloy steel and heat treated for optimal strength properties.

G80 clevis hooks have a minimum breaking strength of 80,000 pounds. They are available in several sizes with shank diameters ranging from 5/8 inch to 2 inches. The hooks feature a safety latch that closes the throat opening to help secure slings, chains, and cables during lifts. The large throat opening and smooth radius also prevent binding and damage to rigging.

Applications of G80 Clevis Hooks

Here are some of the most common applications for G80 clevis hooks:

• Lifting and moving heavy loads with hoists, cranes, and other material handling equipment
• Securing chains, slings, and lifting straps
• Acting as an anchor point for tie downs and bindings
• Tow truck and vehicle recovery operations
• Construction and industrial installations
• Logging, marine, and offshore applications

The high strength and durability of the G80 alloy steel makes these hooks well-suited for demanding environments where safety is critical. Their versatility also allows them to serve as connectors in a wide range of settings.

Specifications of G80 Clevis Hooks

All G80 clevis hooks must meet the following specifications according to ASME B30.26:

• Manufactured from alloy steel for strength and durability
• Minimum breaking strength of 80,000 pounds
• Latch to close throat opening and secure load
• Safety factor of 5:1
• Painted black for corrosion resistance
• Smooth radius in bowl to prevent binding
• Proper sizing information stamped on hook
• Complies with applicable OSHA regulations

Additionally, the hooks must meet all design, inspection, testing, and certification requirements. Reputable manufacturers will have each hook traceable to heat lots and proof tested to ensure quality. Only hooks that pass stringent inspections get stamped with the G80 rating.

Design and Key Features

G80 clevis hooks incorporate several important design elements that improve their functionality:

• U-Shank - The U-shape allows for stable support and centering of loads in the bowl of the hook.
• Safety Latch - The latch closes the hook throat to prevent detachment of slings, chains, etc. This provides an extra level of security during lifts.
• Large Throat Opening - A wide opening allows for easy attachment of rigging equipment and prevents binding.
• Smooth Radius - The bowl has a generous radius to prevent damage to rigging and loads.
• Swivel - Many G80 hooks come with a swivel attachment to prevent twisting of rigging lines.
• High Alloy Steel - The steel has high strength and impact resistance for demanding applications.

These qualities make G80 clevis hooks a very versatile and safe product for critical lifting jobs.

Advantages Over Other Clevis Hook Types

G80 clevis hooks offer noticeable advantages over other clevis hooks, including:

• Higher strength rating than other grades like G215, G550, etc.
• Better resistance to deformation from heavy loads
• Greater safety factor for demanding, hazardous lifts
• Latch included for better security
• Broader range of sizes available
• Smooth radius protects rigging from damage
• Often lighter weight than other high strength hooks
• Complies with strict ASME safety standards

While less expensive clevis hooks can support medium duty jobs, heavy lifting requires the quality of G80 hooks. Their performance and safety justify the additional cost for critical rigging applications.

Purchasing and Using G80 Clevis Hooks

When preparing to purchase and use G80 clevis hooks, keep these important considerations in mind:

Sourcing High Quality Hooks

Be wary of cheap imitation hooks that do not actually meet G80 specifications. Only buy from reputable suppliers that can document the hooks are certified and proof tested. Request to see test reports and certification paperwork to verify performance claims.

Selecting the Right Size

Consider the size of ropes, chains, and loads you will be lifting. Measure throat openings and diameters of hardware the hooks will attach to. Match them to the proper G80 hook size to allow a secure fit without binding.

Inspecting Hooks Frequently

Carefully inspect hooks before each use for signs of damage like cracks, bending, and throat openings. Remove damaged hooks from service immediately. Also check that latches fully close the throats during use.

Lubricating Hooks

Apply a light oil lubricant to the hook bowl and swivel areas to prevent binding and wear. This extends the hook's service life. Consult the manufacturer for approved lubricants.

Following Safety Regulations

Always adhere to OSHA, ASME, and rigging best practices when using G80 clevis hooks. Do not overload hooks past rated capacities or use them with damaged rigging equipment. Exercise maximum care for safety.

Training Personnel

Only allow properly trained personnel to operate the hooks. They should fully understand inspection procedures, weight capacities, hazards, and safety protocol to prevent accidents.

With responsible sourcing, use, and maintenance, G80 clevis hooks provide outstanding performance as rigging connectors. Their high strength and safety focused design make them an indispensable tool for critical lifting needs across many industries and applications.

Frequently Asked Questions

What is the difference between a G80 and G215 clevis hook?

The main difference lies in their strength ratings. G80 clevis hooks have a minimum breaking strength of 80,000 pounds versus 21,500 pounds for the G215 grade. G80 hooks are made from a higher grade alloy steel and heat treated for greater toughness.

Can you repair a damaged G80 clevis hook?

No, repairs should never be attempted on a G80 clevis hook. If damage like cracks, gouges, or bending is found, the hook must be removed from service. Repairs could compromise the integrity and lead to failure.

What are G80 clevis hooks made from?

G80 hooks are manufactured from high strength alloy steel that is quenched and tempered for optimal mechanical properties. The steel contains alloying elements like chromium, molybdenum, and nickel to improve strength.

Should G80 clevis hooks be painted?

Yes, the hooks should be painted to prevent corrosion and rusting. The standard color is black. Paint should be checked periodically for chips and wear to identify hooks needing touch-up maintenance.

Can I replace amissing G80 clevis hook latch?

No, hooks missing latches should not be used. The latch is an integral safety component that prevents detachment of rigging. Hooks without latches require immediate replacement.

Are there left-hand and right-hand G80 clevis hooks?

No, G80 clevis hooks are non-handed. The same hook can be installed for left or right hand rigging. Some may have swivels designed for a specific hand, but the hooks themselves are universal.

What is the most common size of G80 clevis hook?

The most frequently used G80 clevis hook size is the 3/4 inch diameter shank model. This provides sufficient strength for many general rigging needs while still allowing easy handling.

Can I use a G80 clevis hook for overhead lifting?

Yes, G80 hooks meet ASME standards for overhead lifting service. Proper inspection, application, and maintenance for the loads is still required for safety.

Do G80 clevis hooks require load testing?

Individual hooks do not need load testing in service. They are factory tested during manufacturing. However, test lifts are still recommended after rigging solutions are assembled before a critical lift.

FAQs

What are some rigging accessories used with G80 clevis hooks?

Shackles, eye bolts, turnbuckles, and wire rope slings are commonly used with G80 hooks. Chains, rings, and master links also work well for rigging solutions.

How should I store unused G80 clevis hooks?

Store in a clean, dry area protected from corrosion. Make sure hooks hang freely and don't contact each other during storage. Occasional lubrication helps maintain good condition.

What is the typical lead time for ordering G80 clevis hooks?

Lead times can range from 2-6 weeks in most cases. Some distributors may have inventory on hand for faster delivery. Large quantity orders generally require longer lead times.

Can I use a G80 clevis hook in subzero temperatures?

Yes, G80 hooks retain adequate impact strength for safe use down to -20°F. The steel's toughness prevents brittle fracture failure at low temps.

Do G80 clevis hooks need to be retired after a certain lifespan?

ASME does not mandate retirement criteria. Hooks should be inspected periodically and retired if excessive wear, damage, or cracks appear. Well-maintained hooks can have very long service lives.