Lifting Hardware at
Aztec Lifting Hardware from G.L. Huyett

G.L. Huyett is a master distributor offering a wide variety of lifting hardware for your lifting and rigging needs. Contact us to speak with our friendly, experienced Sales team to find just the right part for you!

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Durable grade 70 transport chain is available in lengths up 100 feet for load securement and towing. Grade 70 chain is available with or without a clevis end grab hook. Grade 30 proof coil chain is an economical option for light duty construction and agricultural applications. NOTE: Grade 70 and grade 30 chain is not approved for overhead lifting.



Chain Hardware & Repair Links

Cold shut links, quick link connectors and repair links are a fast, easy and inexpensive way to repair, join or extend chains and couplers in the field. Master links are an integral part of rigging and sling assemblies or can be used a standalone rigging accessory.



Clevis Ends

Clevis rod ends are a U‑shaped fastener that allow for the quick and easy connection or removal of a variety of lifting and rigging components. Clevis ends come tapped and threaded for use with a threaded rod or as an untapped blank. Double clevis ends are popular for connecting chain ends to rings, end links, hooks or eye bolts.



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Wire Eye Bolt

Bent wire eye bolts, sometimes referred to as closed eye bolts, wire eye bolts, or turned eye bolts, are a steel wire fastener featuring a nearly closed loop on one end and threaded shank on the other. Designed for through‑hole applications, bent wire eye bolts are often used for lashing and suspension within its appropriate load limit. Bent wire eye bolts are not to be used for rigging or lifting as the eye loop can open under heavy loads.



Swivel Hoist Ring

Swivel Hoist Rings, or center-pull-hoist rings, feature a 180‑degree pivot and 360‑degree swivel to allow for lifting from nearly any direction. The ring absorbs any pitch, roll, or sway of an unbalanced load in order to complete the lift safely.



Lifting Hooks

Grab hooks have a narrow throat to prevent chain from slipping. Slip hooks, or sling hooks, have a wider throat to allow chain to move to take up slack. Grab hooks and Slip hooks are available with clevis or eye sling attachments. Light duty snap hooks, or rigging carabineers, with a self‑closing latch are also available.



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Lifting Eye Bolt

Machinery lifting eye bolts consist of a thread shank with an eye (loop or ring) at one end. The threaded shank is fully installed into a tapped hole in a piece of equipment or machinery for lifting. Lifting eye bolts come in plain pattern for zero degree (non‑angled) vertical lifts or shouldered for angular lifts. DIN standard lifting eyes are also available for handling additional angular stress.



Lifting Eye Nut

Machinery lifting eye nuts consist of a metal loop, or lifting eye, with a tapped hole on one side. Lifting eye nuts are installed on a threaded shank or post that protrudes from a piece of equipment or machinery. Lifting eye nuts come in plain pattern for zero degree vertical lifts or shouldered for angular lifts. DIN standard lifting eyes are also available.



Nut Eye Bolt

Nut eye bolts consist of a threaded shank or shaft with an eye at one end. The shank is inserted into an untapped hole and will protrude through the bottom of the hole. A nut secures the end of the shank and prevent the nut eye bolt from pulling back out. Nut eye bolts come in plain pattern for zero degree vertical lifts or shouldered for angular lifts.



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Rod End

Rod ends, or swing bolts, are available as blanks that can be cut, drilled, tapped, threaded, or welded to make control arms, custom eye bolts, and other levers, or they can be machined to order to meet the requirements of your application.



Screw Eye Bolt

Screw eye bolts, or lag eye bolts, consist of a screw threaded shank with an eye at one end. The screw end is threaded into wood or a lag anchors. Screw eye bolts come in plain pattern for zero degree vertical lifts or shouldered for angular lifts.




Anchor shackles, or bow shackles, have a rounded, O‑shaped bow to allow for side loading and sling-leg connections. Chain shackles, or D shackles, have a narrow bow for in‑line towing, hoisting and rigging applications. A pin is placed in the ears of the bow to secure slings, chains or rope in the shackle.



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Positioning swivels are created from two rigging end fittings held together by a threaded shank and nut. Positioning swivels are designed to allow movement prior to loading to align rigging hardware, but cannot swivel freely once the load has been applied. Eye x eye swivels and eye x jaw swivels are available.




A turnbuckle assembly is a common piece of rigging hardware that is used to reduce slack or adjust tension. Turnbuckles typically consist of three components, a body with a tapped hole on each side (one left-hand threaded and one right-hand threaded) and two end fittings. Common end fittings have a hook, jaw or eye at that end of a threaded shank. Alternately, a threaded shank called a stub end can be used.

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Wire Rope Hardware

Wire rope clips can be used to form a load bearing loop at the end of a wire rope or cable. U‑bolt and double saddle, or fist grip, wire rope clips are available. Thimbles can also be used to help preserve the size and shape of the loop. Swage sleeves can also be used to create a loop or lag splice for cable ends.

Yoke End

Yoke ends (often confused with clevis ends) are a U‑shaped fastener that allow for the quick and easy connection or removal of a variety of lifting and rigging components. Yoke ends tend to be an off the shelf alternative to clevis ends, and come tapped and threaded for use with a threaded rod or as an untapped blank.




New Lifting IQ Tool Now Available!

LIFTING IQ is an innovative new tool that provides INSTANT QUOTES and ONLINE CHECKOUT for CUSTOM LIFTING, RIGGING, AND SUSPENSION HARDWARE, brought to you by G.L. Huyett.

• Select features and get a price for custom parts! Then add to cart to buy online. It's FAST, FREE, & EASY!

• Prints for custom parts are available for download from your Account Order History.

• Most parts ship within 5 business days!

By Type

What does DIN standard mean?

DIN standard means that a product or service follows a recognized standard that has been reviewed and approved for use at a national or international level by Deutsches Institut für Normung (DIN) Standards Committee. DIN standards are reviewed every five years to ensure it reflects the current state of technology.


What is the chain grading scale / how is chain graded?

The chain grading scale is a method of determining the chain's break strength. This is determined by taking the cross section area of a single link and dividing it by .224805 (the approximate value of a newton).

What is Grade 70 chain?

Grade 70 chain, sometimes referred to as "transport chain" is a high strength, heat treated, carbon steel chain often used to secure heavy loads. It is commonly used in agricultural, forestry, transportation, and industrial applications where strong, lightweight binding is desired. Grade 70 chain is not used for overhead lifting.

What is Grade 70 chain rated for?

Grade 70 chain, or G70 chain, is rated 700 Newton per square millimeter or 101,526 pounds of force per square inch per ASTM A413/A413M standard. As an example, 3/8 inch Grade 70 chain has a maximum working load limit of approximately 6,600 lbs.

What is Grade 30 proof chain?

Grade 30 proof coil chain is a general purpose grade chain made from low carbon steel. It is often used for lashing and retention in lighter agricultural, automotive, and industrial environments and can commonly be found in playground equipment or crowd control applications. Grade 30 proof chain is not intended for overhead lifting.


How to repair chain with a repair link:

A chain can be repaired using a repair link. Repair links are often installed and removed using a hammer and punch.

To install a repair link, slide the desired chain link into the open end of the repair link. Next, place the repair link against a solid surface and strike the opening of the link with a hammer to force it closed.

To uninstall a repair link, secure the link in a vice or similar tool to hold the link in place while being serviced. Position the working end of a punch or chisel in the crease of the repair link where the two previously open ends of the link have been closed together. Once properly positioned, firmly strike the protruding end of the chisel or punch with a hammer to force the ends of the repair link apart until it can be separated from the chain.

What is a chain master link?

A chain master link is an oblong or pear shaped weldless ring that acts as a collector point for multiple chains to be attached in securing, suspending, and lifting applications. G.L. Huyett's selection of master links feature working load limits (WLL) ranging from 1600 lbs to 39900 lbs depending on size.


What is an eye bolt?

An eye bolt is a fastener designed with a threaded shaft with an unthreaded circular loop at one end. Eye bolts can be wire formed or forged. Wire formed eye bolts provide a small gap at one end of the loop whereas forged eye bolts provide a continuous unbroken loop. Eye bolts are available in a variety of sizes and are used as rigging points for securing, suspending, and lifting loads.

What are the main types of lifting eye bolts?

The main types of lifting eye bolts are nut eye and machinery eye bolts. Nut eye bolts feature a longer shank that enables them to be backed by a nut for untapped through‑hole applications. Machinery eye bolts have a shorter tang with machine threads for threading into tapped holes. Both variations are manufactured in plain or shoulder patterns. Shoulder pattern eye bolts have a flare out, or shoulder, at the transition of the eye to the tang for supporting angular loads. Plain pattern eye bolts do not have a shoulder and should only be used for linear loads.

How to install an eye bolt:

Eye bolts are often installed in both tapped and untapped holes. Machinery lifting eye bolts are used for tapped holes whereas nut eye bolts are used for untapped holes.

How to install an eye bolt into a tapped hole

To install a machinery lifting eye bolt into a tapped hole, simply insert the threaded end of the bolt into the hole, turning it clockwise to tighten. In some applications, the eye bolt may be designed with left‑handed threads, thus requiring it to be turned counterclockwise for tightening. Continue turning the eye bolt until no threads are visible and the eye bolt is securely tightened against the mating surface.

How to install an eye bolt into an untapped hole

To install a nut eye bolt in an untapped hole, insert the threaded end of the eye bolt into the hole and push through until the threads of the eye bolt protruded out the opposite end of the hole. Next, thread a nut onto the threaded shaft of the eye bolt and tighten with the appropriately sized wrench.

How to safely use bent wire eye bolts:

  1. Do not use for lifting.
  2. Adjust the eye bolt for in‑line load force. Angular loads may cause the bolt to bend resulting in the opening of the eye.
  3. Two washers and nuts should be utilized when bent wire eye bolts are used in non‑threaded, through hole applications. Tighten nuts to the appropriate torque specifications for your application.
  4. At a minimum, 90% of threads should be engaged in the receiving hole when using shims or washers.

Can you use eye bolts in wood, concrete, or metal?

Eye bolts can be used in a variety of materials including wood, concrete, and metal. For wood and concrete, an eye bolt backed with a washer and nut is ideal when a through‑hole is possible. If a through‑hole is not optional, a lag eye bolt may be a more suitable option as it will provide more pullout resistance than an eye bolt with machine threads.

For through‑hole metal applications, nut eye bolts or bent wire eye bolts can be used. Machinery eye bolts feature fully threaded shanks for use in blind, threaded holes.

When choosing an eye bolt, make sure the listed working load limits exceed the loads the eye bolt will be subjected to during use.

When should I use a shouldered eye bolt?

Shouldered eye bolts should be used when angular loads are present. The shoulder design of the eye bolts increases working load limits of the eye bolt by spreading angular load across a wider range at the base of the eye bolt where it is secured.


How to use a slip hook

Slip hooks, which have a wider throat than a grab hook, are often attached to chains or ratchet binders. They are commonly used to secure loads by hooking the opening over a rigging point such as a D‑Ring.

To use, simply pass the opening of the hook through the rigging point and pull so that the inner curve of the hook is pressed tightly against the rigging point. The closed end of the slip hook should be positioned in a manner that does not allow the hook to fall freely should clack in the chain or ratchet binder become present.


What is rigging hardware?

Rigging hardware is hardware designed to secure, lift, move, or suspend a load. This includes a variety of items such as Grade 70 chain, clevis shackles, turnbuckles, eye bolts, master links and more. G.L. Huyett's Aztec Lifting Hardware provides a wide range of rigging solutions for nearly any application.

How rigging works:

Rigging is a system of chains, ropes, or cables that often work in concert with clevises, shackles, turnbuckles, and other anchor points. This combination of hardware allows for the hoisting or securing of various loads ranging from boat sails to heavy construction materials.


What is a clevis shackle?

Clevis shackle is a general term that encompasses anchor shackles or chain shackles. They are "U" shaped with a hole at each open tang allowing a pin to be inserted through. Some clevis shackle variations have a more prominent loop area closely resembling an "O" shape. Both "U" and "O" shape variations allow the shackle to support loads from various directions without creating excessive side load. Clevis shackles are commonly used with chains and master links in various industries that require rigging to secure, suspend, and lift loads.

How to use anchor shackles:

  1. Remove the attached pin by either unscrewing it from the shackle or removing the cotter securing the pin.
  2. Next, insert the desired part, such as a chain link or a master link into the tangs of the shackle so that when the pin of the shackle is reinstalled, the part cannot be removed.
  3. Once the part is positioned appropriately, re‑install the pin.

Can you side load a shackle?

Anchor shackles can handle side load due to their larger, rounded bow as opposed to chain shackles which are not designed for side load. However, when angular loads are applied, the shackle's working load limit is reduced in correlation to the angle at which the load is applied. Make sure to exercise caution when using shackles in this manner.

How to properly secure a lifting shackle:

  1. Remove the pin from the shackle.
  2. Slip the opened shackle over the intended fixture.
  3. Re‑install the pin into the shackle to secure it to the fixture.
  4. Only use the shackle loop to attach slings for lifting.

How do I pick the right lifting shackle?

  • Choose a shackle with a working load limit exceeding loads to be applied.
  • For lifting and angular loads, use an anchor or "bow" shackle with a screw pin or safety bolt.
  • Use D, or chain, shackles for linear loads not being lifted.


What is a turnbuckle?

Turnbuckles are a fastener that is used to take up slack and apply tension for support or suspension, or to adjust the length of rope, cable, or tie rods. They consist of a metal frame called a body that is tapped with a left‑hand thread on one end, and a right‑hand thread on the other. Two end fittings (studs, eyes, hooks, or jaws or a combination of any two of these) are screwed into either end and attached to work pieces on either end before the body is rotated (turned) and both end fittings are drawn into the body simultaneously to apply tension.

How is a turnbuckle used?

  1. Unscrew the connecting ends of the turnbuckle until only a few threads are left in the turnbuckle body. This will provide the maximum amount of take up.
  2. Next, connect the ends of the turnbuckle to the desired cable, chain, or anchor point.
  3. Once connected, turn the body of the turnbuckle to tighten. If the turnbuckle ends are rotating with the body, hold them in place so that they screw into the body equally.
  4. Continue to turn the turnbuckle body until the desired slack is removed.

Where can I buy turnbuckles?

G.L. Huyett is the distributor and manufacturer of Aztec Lifting Hardware. Choose from our large selection of turnbuckle bodies, ends, and assemblies to find the right part for your rigging needs. If you don't see what you are looking for, contact us to speak with our friendly, experienced Sales team!

How much weight can a turnbuckle hold?

The amount of weight a turnbuckle can hold depends on the size of the turnbuckle being used, as well as the ends it is equipped with. Below is a table that outlines common sizes and their associated working load limits:

Turnbuckle Weights and Work Loads

How do I stop a turnbuckle from moving or turning?

Turnbuckles can move or turn causing unwanted loosening when subjected to vibration. Some methods of securing turnbuckles include:

  • Locknut – Install a locknut between the turnbuckle end and the turnbuckle body. Tighten the locknut against the body when the desired take up is achieved.
  • Cotter pin – Some turnbuckle ends feature a hole in the threaded shank allowing a cotter pin to be inserted to lock the turnbuckle body and end together.
  • Safety wire ‐ A wire can be routed from the body of the turnbuckle, looped through a turnbuckle end (if applicable), and tied back into itself. This prevents the body and end from working independent of each other.

How are turnbuckles measured?

Turnbuckles are measured by 3 points:

  1. Body take‑up – This is the inside length of the turnbuckle body.
  2. Closed length – This is the measurement of the assembled turnbuckle with both ends fully threaded into the turnbuckle body.
  3. Shank diameter – The shank diameter is cross section measurement of the turnbuckle end's threaded shank.

What is the difference between hook, jaw, eye, and stub end turnbuckles?

  • Hook end – Hook turnbuckle ends are designed with a formed slip hook at the end of a threaded shank. These are ideal for quickly attaching or detaching assemblies.
  • Jaw end – Jaw turnbuckle ends feature a threaded shank with a u‑shaped end that can be closed using a clevis pin. These are ideal for use with fixed anchor points.
  • Eye end – Eye turnbuckle ends feature an enclosed oblong loop at the end of a threaded shank. They are designed to work with rigging components including anchor shackles, quick links, and wire rope eyes.
  • Stub end – Stub end turnbuckles feature a smooth rod‑like end with the same diameter as its threaded shank. These are often used for pushing surfaces or objects apart.


What is wire rope?

Wire rope refers to wire cable 3/8 in diameter or larger. It is made by helically wrapping multiple strands of steel cable together around a steel or composite one.

What is wire rope used for?

Wire rope, or wire cable, is very common and used in a wide variety of industries to secure, lift, and suspend loads. Wire rope is comprised of multiple strands of wire wound together, allowing the rope to not immediately fail should one of the strands become compromised. Often this allows the task at hand to be completed before servicing the damaged area. Wire rope can be found on ski lifts, elevators, cranes, and much more.

How to crimp wire rope:

Wire rope is crimped using crimp sleeves, also called swage sleeves, along with special cable crimpers, or swage tools.

To crimp the wire rope:

  1. Insert the rope into the sleeve, pulling the end completely through the sleeve.
  2. If creating a loop at the end of a cable run, loop the end of the cable rope back into the swage sleeve inserting it into the remaining empty space to create the loop.
  3. The size of the loop can be adjusted prior to crimping by pushing more or less rope through the sleeve.
  4. Once the desired loop size is achieved, use a swage tool or crimper to crimp the sleeve securely onto the cable.

How to cut wire rope:

For best results, wire rope should be cut using cable cutters that are appropriate for the size of wire rope being cut. Using standard side cutters can deform the end of the cable and cause it to fray. To cut, measure the amount of wire rope needed and insert the cable into the jaws of the cutter. Close the jaws of the cutter onto the wire rope until the jaws have cut cleanly through the rope.


Transcript: Hello! My name is Garrett Redden. This video is going to show you how to use our Aztec Lifting IQ tool to produce custom hardware quotes and orders for your needs. Once you have made your way to the G.L. Huyett website, navigate to the directory at the top of the page. There is a hyperlink to the custom quoting tool under Lifting Hardware. The link page is the Lifting IQ tool. It is divided into two main sections: your dialog boxes for options and an example of the part being adjusted to your specifications. This tool has two primary functions and benefits for your use. The first is the construction and purchasing of Aztec hardware and the second is the ability to print out engineering prints of the part that you have constructed.

Options in the dialog boxes change based on the part you are working with. Here you can see the parts we offer through this tooling program. For the purposes of this video, we will remain on the number two clevis end. For materials and finish, again we will remain on the default option in both of these categories used in our manufacturing. However, G.L. Huyett has a wide variety of materials. Please select and use what best suits your needs within the parts specification. Thread direction and thread type. We will also use the first option in both of these cases. We have a variety of these choices based on what you have made for your part selections up to this point. Note that if the part requires secondary processing to achieve these specifications, it could take a bit longer to ship. As we get to the measurements, note the letters appearing next to the sizing. These correlate to the letters on the diagram to the right to ensure that you get exactly the part you need. We will once again select the first value.

Now for one of the biggest factors in the quote you will receive: quantity. Know that the more of an item that you require, the lower the cost per part will be. We will start with ten and hit submit to get that price. Value shown is the price for one singular part. When you place your order or when you go to the checkout screen, this value will be multiplied by the amount ordered. Any additional fees associated with shipping will be broken down in detail at the checkout phase. To show how this price may change, let's adjust the order to 20 and see how that changes the overall price.

From here, you will need to accept terms and conditions to be able to add the product to your cart. There is a simple checkbox here. The terms and conditions of the Aztec Lifting Tool can be read by clicking the link next to this box. They have to do with returns and engineering approval in regards to the Aztec Lifting IQ tool. Once accepted you can add to the cart and continue on a standard G.L. Huyett checkout procedure there. However, you may also continue to the second function of the Aztec lifting IQ tool. Navigate to the top right of the page and click this blue print button. It will bring you to a printout page in a new tab. This page is the same page given to our manufacturers to produce your part and will be an exact printout of what you are quoting. This can be used for your own needs, as we want you to be as equipped as our own team. Please note: if purchased, your account will get this printout saved without the word proof over it and be a copy of our version. If you are purchasing any standardized item in standard measurements, you will not receive this printout, as they are default for other products on the site. With that, you are now well on your way to success with the Aztec Lifting IQ tool. If you have any questions about quote pricings, call Sales at (785) 392-3017 or email Thank you for taking time to watch this video and raising your lifting IQ.