Hardware
A centralized library of rigging hardware specifications and safety guidelines. Access verified industry data on design factors, rated loads, and removal criteria to ensure every lift meets current Alberta OH&S and ASME standards. Beyond technical specifications, this guide also addresses common industry misconceptions to help clarify complex regulations.
This resource complies with:
- Legislative Requirements: Alberta OH&S Act, Regulation and Code, and ASME B30 Standards.
- Inspection Protocols: Essential criteria for initial, frequent, and periodic reviews.
- Operational Safety: Proper rigging practices and environmental limitations.
- Removal Criteria: Identifying damage that necessitates immediate removal from service.
The following information is compliant with ASME B30.26 Rigging Hardware.
For more detailed information, please refer to the full ASME standard.
General Information
TRAINING
All personnel using rigging hardware must receive training in the following areas:
- Selection of appropriate hardware types and configurations
- Inspection procedures and identification of removal criteria
- Personnel safety precautions during handling and use
- Environmental effects on the hardware performance (e.g., temperature, chemical exposure)
- Proper rigging practices to ensure safe and effective load handling
DESIGN FACTOR
- (a) Shackles with a rated load up to and including 150 tons (136 metric tons) must have a minimum design factor of 5.
- (b) Shackles with a rated load exceeding 150 tons (136 metric tons) must have a minimum design factor of 4.
- (c) Adjustable hardware (eyebolts, swivel hoist rings, eye nuts and turnbuckles) must have a minimum design factor of 5.
- (d) Links, Master Link Subassemblies, Rings, and Swivels must have a minimum design factor of 5
RATED LOADS
The rated load must be established in accordance with the hardware manufacturer’s recommendations. The terms “rated capacity” and “working load limit (WLL)” are commonly used to refer to the rated load.
Identification
Each shackle body must have durable markings applied by the manufacturer that clearly indicate:
- (a) Manufacturer’s name or trademark
- (b) Rated load
- (c) Shackle size
Each eyebolt, eye nut, turnbuckle, link, master link subassembly, ring or swivel must be clearly marked with the following information:
- (a) Manufacturer’s name or trademark
- (b) Size or rated load
- (c) Grade for alloy steel eyebolts, or if required to identify rated load
Each swivel hoist ring must be clearly marked with the following information:
- (a) Manufacturer’s name or trademark
- (b) rated load
- (c) torque value
Shackle Pin Marking Requirements
Each shackle pin must have durable markings applied by the manufacturer that clearly indicate:
- (a) The manufacturer’s name or trademark
- (b) The grade, material type, or rated load of the pin
Users must ensure that all identification markings on rigging hardware remains legible for the entire service life of the hardware.
Effects of Environment
When using rigging hardware, excluding swivel hoist rings and carbon steel eyebolts, consult the manufacture or a qualified person before use at temperatures above 204°C (400°F) or below −40°C (−40°F).
When using swivel hoist rings, consult the manufacturer or a qualified person before use at temperatures above 204°C (400°F) or below −20°C (−29°F)
When using carbon steel eyebolts, consult the manufacturer or a qualified person before use at temperatures above 135°C (275°F) or below −1°C
Chemically Active Environments
Rigging hardware may be adversely affected by exposure to chemically active environments, including caustic or acidic substances and fumes. Prior to use in such conditions, consult the rigging hardware manufacturer or a qualified person to ensure suitability and safety.
Inspections & Removal Criteria
Inspection
All inspections must be conducted by a designated person. If any deficiencies are identified, they must be reviewed by a qualified person, who will determine whether the condition constitutes a hazard.
Initial Inspection
Before being used, all new, altered, modified, or repaired rigging hardware must be inspected by a designated person to confirm compliance with applicable standards. Initial inspections do not require written records
Frequent Inspection
- (a) A visual inspection must be conducted by a designated person each shift before use. For rigging hardware installed in semi-permanent or inaccessible locations where daily inspection is impractical, periodic inspections must be performed instead.
- (b) Rigging Hardware must be removed from service if any condition exists that may pose a hazard or raise concerns about its safety.
- (c) Written records are not required for frequent inspections.
Periodic Inspections
(A) A complete inspection of all rigging hardware must be conducted by a designated person. The inspection must assess for any conditions listed in the removal criteria section or other issues that may pose a hazard. A qualified person must determine whether any identified condition warrants removal from service.
(B) Inspection Frequency:
- (1) Periodic inspection intervals shall not exceed one year. The actual frequency should be determined based on:
- (a) Frequency of shackle use
- (b) Severity of service conditions
- (c) Nature of lifting or load-handling activities
- (d) Experience with the service life of shackles in similar applications
- (2) Recommended intervals:
- (a) Normal service — annually
- (b) Severe service — monthly to quarterly
- (c) Special service — as determined by a qualified person
(C) Written records are not required for periodic inspections.
Removal Criteria
Rigging Hardware must be removed from service if any of the following conditions are observed and only returned to service if approved by a qualified person:
- (a) Missing or illegible identification
- (b) Evidence of heat damage, including weld spatter or arc strikes
- (c) Excessive pitting or corrosion
- (d) Load-bearing components that are bent, twisted, distorted, stretched, elongated, cracked, or broken
- (e) Excessive nicks or gouges
- (f) A reduction of 10% or more in the original or catalog dimension at any point
- (g) For shackles, incomplete pin engagement
- (h) Excessive thread damage
- (i) Evidence of unauthorized welding
- (j) For swivel hoist rings, inability to freely pivot or rotate
- (k) For swivels, inability to freely rotate when not loaded, as well as loose or missing retaining devices.
- (l) Any other visible damage, or condition that causes doubt as to the continued use of the rigging hardware.
Repairs and Modifications
- (a) All repairs, alterations, or modifications to rigging hardware must be performed in accordance with specifications provided by the manufacturer or a qualified person.
- (b) Any replacement parts must meet or exceed the original equipment manufacturer’s specifications.
Rigging Hardware Selection
- (a) Select rigging hardware with characteristics appropriate for the type of sling, load, hitch configuration, angle of loading, and environment, following the recommendations of the manufacturer or a qualified person.
- Note: The angle of loading directly affects the stress in the rigging hardware. As the horizontal angle decreases, the loading on the rigging hardware increases.
- (b) The rated load of the rigging hardware must not be exceeded under any circumstances.
- (c) Rigging hardware showing signs of damage must not be used until they have been inspected and approved for service by a qualified person.
Cautions to Personnel
- (a) At no time during the lift should any part of the body be positioned between the rigging hardware, the suspended load, or other rigging components.
- (b) Always stand clear of a suspended load.
- (c) Stand clear of rigging that is under tension.
- (d) Riding on the rigging hardware is strictly prohibited.
Storage and Work Environments
- (a) Rigging Hardware should be stored in a clean, dry area where they are protected from physical damage, corrosive substances, and extreme heat.
- (b) If rigging hardware is to be used in extreme temperatures or chemically active environments, consult the manufacturer or a qualified person to verify suitability and ensure safe application.
Rigging Practices
Shackles
- (a) Ensure screw pin threads are fully engaged and tightened, with the shoulder in contact with the shackle body.
- (b) If the shackle is designed for a cotter pin, it must be installed and kept in good working condition.
- (c) Avoid contact with sharp edges that could damage the shackle.
- (d) Avoid shock loading swivel hoist rings.
- (e) The load should be centered in the bow of the shackle to prevent side loading.
- (f) Do not attach multiple sling legs to the shackle pin.
- (g) If side loading is required, the rated load must be reduced in accordance with the manufacturer or a qualified person.
- (h) Screw pin shackles must not be rigged in a way that could cause the pin to unscrew during use.
- (i) For long-term installations, use bolt-type shackles. If screw pin shackles are used, the pin must be secured against rotation or loosening.
- (j) Shackles must not be dragged across abrasive surfaces.
- (k) When using multiple slings in the body of a shackle, the included angle must not exceed 120 degrees.
- (l) In a choker hitch, the pin must be connected to the choking eye of the sling
Eyebolts
- (a) Eyebolts must be tightened or otherwise secured to prevent rotation during lifting or load-handling operations.
- (b) For installation in a tapped blind hole in steel, the minimum thread engagement must be 1.5 times the bolt diameter. For other materials or thread configurations, consult the eyebolt manufacturer or a qualified person.
- (c) When installed in a tapped through-hole with a thickness less than one bolt diameter, a nut must be fully engaged beneath the load and tightened securely against it.
- (d) In untapped through-hole applications, the nut beneath the load must be fully engaged. If the eyebolt does not seat directly against the load (i.e., is not shouldered), a second nut above the load should be used when feasible.
- (e) Eyebolts without shoulders must only be used for straight, in-line loading.
- (f) Shoulder eyebolts are required for angular loading. In such cases, the shoulder must be flush with and securely tightened against the load. The working load limit (WLL) must be reduced in accordance with applicable standards.
- (g) For angular load applications, the plane of the eyebolt must be aligned with the direction of pull. Steel flat washers may be placed under the shoulder to assist with proper alignment.
- (h) Eyebolts must be inspected and confirmed to be in good working condition prior to use.
- (i) Avoid shock loading Eyebolts.
Swivel Hoist Rings
- (a) For threaded hole installations in steel, the minimum thread engagement must be 1.5 times the bolt diameter. For other materials or thread types, consult the swivel hoist ring manufacturer or a qualified person.
- (b) In through-hole applications, both a nut and washer must be used. These components must conform to the manufacturer’s specifications, and the nut must be fully engaged.
- (c) The bushing flange must make full contact with the surface of the load.
- (d) Do not place spacers or washers between the bushing flange and the load’s mounting surface.
- (e) Tighten the swivel hoist ring to the torque values specified by the manufacturer.
- (f) The swivel hoist ring must be able to rotate and pivot freely without obstruction during lifting or load-handling operations.
- (g) The applied load must be centred within the bail to prevent side loading.
- (h) Any load-handling attachment must be narrower than the internal width of the bail to prevent spreading.
- (i) All components must be inspected and verified to be in proper working condition before use.
- (j) Confirm that the swivel hoist ring’s Working Load Limit (WLL) is equal to or greater than the expected angular rigging force.
- (k) Avoid shock loading swivel hoist rings.
Links, Rings and Master Link Subassemblies
- (a) Any alterations or modifications to links or rings must comply with applicable standards and referenced procedures.
- (b) Avoid contact with obstructions that may bend, deform, or otherwise damage the link or ring.
- (c) Avoid shock loading links and rings.
- (d) Do not drag links or rings across abrasive surfaces, as this may cause wear or damage.
- (e) Ensure the link or ring is is of the correct shape and size to seat correctly in the hook, lifting device, or associated rigging hardware
- (f) When multiple slings or riggingcomponents are gathered within a single link or ring, the included angle shall not exceed 120 degrees unless specifically approved by a qualified person.
- (g) The horizontal angle of loading shall be no less than 30 degrees unless authorized by a qualified person
- (i) Nonsymmetrical loads must be evaluated by a qualified person to ensure that no component is overloaded.
- (j) Each individual component within the rigging assembly shall remain within its rated capacity and must not be overloaded.
Eye Nuts
- (a) Eye nuts must be fully threaded and secured to prevent rotation during lifting or load-handling operations.
- (b) Threads must be completely engaged to ensure proper load transfer.
- (c) Eye nuts are intended for in-line loading only and must not be used for angular or side loading.
- (d) The orientation of the eye may be adjusted using flat washers or a lock nut, as needed.
- (e) All components must be inspected and confirmed to be in proper working condition before use.
- (f) Avoid shock loading load eye nuts.
Turnbuckles
- (a) End fittings must be fully threaded into the turnbuckle body. Note: For pipe-style bodies, the thread engagement may not be visible—ensure full engagement before applying load.
- (b) All associated components—such as pins, bolts, nuts, and cotter pins used with jaw ends—must be inspected and confirmed to be in proper working condition before use.
- (c) When locking nuts are used, they must be compatible with the threads of the turnbuckle end fittings.
- (d) Avoid contact with any obstructions that could bend or damage the turnbuckle during use.
- (e) Avoid shock loading turnbuckles.
- (f) Loads applied to the turnbuckle must be aligned in-line and in direct tension.
- (g) Do not side load turnbuckles.
- (h) Turnbuckles must be rigged or otherwise secured to prevent unintentional rotation or unscrewing during lifting or load-handling operations.
- (i) For permanent or long-term installations, turnbuckles must be positively secured to prevent loosening over time.
- (j) Do not drag turnbuckles across abrasive surfaces, as this may cause damage.
- (k) Adjust turnbuckles using a properly sized wrench applied to the wrench flats on the turnbuckle body.
Swivels
- (a) Swivels are positioning hardware and are not intended to rotate when loaded.
- (b) Ensure the swivel is of the correct shape and size to seat correctly in the hook, lifting device, or associated rigging hardware.
- (c) Avoid contact with obstructions that may bend, deform, or otherwise damage the swivel.
Misconceptions
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If you have attended a training course you are a competent rigger.
Training is only one factor in being competent to carry out rigging tasks without supervision. You must also be qualified and have sufficient experience to work safely on your own.
Referenced Standards:
ALBERTA OHS ACT
1(d) “competent” in relation to a person, means adequately qualified, suitably trained and with sufficient experience to safely perform work without supervision or with only a minimal degree of supervision
(3)(a) If work is to be done that may endanger a worker, the employer must ensure that the work is done by a worker who is competent to do the work.
TRAINING
Workers using shackles must be properly trained in the selection, inspection and usage. Including potential impacts to the work environment or other workers.
Refer to the ASME Standard B30.26-2015 Chapter 26-1 Shackles for more detailed information.
On a screw pin shackle, the screw pin should be tightened until the shoulder makes contact with the shackle body and then turned back to loosen it a small amount.
The screw pion threads must be fully engaged and tight and the shoulder should be in contact with the shackle body.
Referenced Standards:
RIGGING PRACTICES
- Intended Use:
Shackles must be used for their intended purpose. - Securement:
The shackle pin must be secure. Only use the type of pin the shackle was designed for (screw pin, bolt-type or round pin). Fully tighten screw pins until hand tight. For bolt-type shackles, ensure bolt, nut, and cotter pin are installed correclty. Never substitute pins with bolts, nails, rods or other home-made or incorrect parts. - General tips: Shackle parts are not interchangeable unless deemed appropriate by the manufacturer. If the load may rotat or bounce, using the right shackle will prevent the pin from coming loose or unscrewing during use.
Refer to the ASME Standard B30.26-2015 Chapter 26-1 Shackles for more detailed information.
The cotter pin of a bolt-type shackle can be replaced with a spring clip or wire.
Repairs, alterations, or modifications to a shackle are prohibited unless specified by the shackle manufacturer or qualified person. Replacement parts, suchs as pins, shall meet or exceed the original equipment manufacturer’s specifications.
Referenced Standard:
RIGGING PRACTICES
- Never substitute pins with bolts, nails, rods or other home-made or incorrect parts. Shackle parts are not interchangeable unless deemed appropriate by the manufacturer. If the load may rotat or bounce, using the right shackle will prevent the pin from coming loose or unscrewing during use.
Refer to the ASME Standard B30.26-2015 Chapter 26-1 Shackles for more detailed information.
A shackle's marked size is the diameter of the pin.
The size marked on the body of the shackle refers to the diameter of the shackle body, not the diameter of the pin. In most cases the pin is a greater diameter than the shackle body.
Referenced Standards;
IDENTIFICATION:
- The body of each shackle must contain long-lasting markings by the shackle manufacturer. The markings must include the name of the manufacturer, the rated load of the shackle and the size of the shackle.
Refer to the ASME Standard B30.26-2015 Chapter 26-1 Shackles for more detailed information.
Shackles can make contact with the load when lifting at angles.
Contact with sharp edges that could damage the shackle should be avoided.
If you have attended a training course you are a competent rigger.
Training is only one factor in being competent to carry out rigging tasks without supervision. You must also be qualified and have sufficient experience to work safely on your own.
Referenced Standards:
ALBERTA OHS ACT
1(d) “competent” in relation to a person, means adequately qualified, suitably trained and with sufficient experience to safely perform work without supervision or with only a minimal degree of supervision
(3)(a) If work is to be done that may endanger a worker, the employer must ensure that the work is done by a worker who is competent to do the work.
TRAINING
Workers using adjustable hardware, including Eyebolts, Eye Nuts, Swivel Hoist Rings and Turnbuckles, must be properly trained in selection, inspection and usage. Including potential impacts on the work environment or other workers.
For more detailed information, refer to the ASME Standard B30.26-2015 Chapter 26-2 Adjustable Hardware.
The capacity of an eyebolt remains constant at all angles.
Only shouldered eyebolts shall be used for angular loading. When used for angular loading, the shoulder shall be flush and securely tightened against the laod. The Working Load Limit (WLL) must be reduced.
Referenced Standards:
RIGGING PRACTICES
- Secure Eyebolts:
Must be tightened or otherwise prevented from rotating during lifting. - Thread Engagement:
Blind holes: Minimum thread depth = 1.5 × bolt diameter (for steel). Other materials or conditions: Consult manufacturer or qualified person. - Through-Holes:
Tapped holes < 1 diameter thick: Use a nut under the load, fully engaged and tightened. Untapped holes: Nut under load fully engaged; if not shouldered, add a second nut on top. - Load Direction:
Non-shouldered eyebolts: Only for straight (in-line) loads. Shoulder eyebolts: Required for angular loads; shoulder flush and tight. - Angular Loading:
Reduce WLL per manufacturer guidance; align eye with pull direction; washers may help alignment.
For more detailed information, refer to the ASME Standard B30.26-2015 Chapter 26-2 Adjustable Hardware.
It is not neccesary for eyebolts to be marked with a rated load.
Each eyebolt shall be durably marked by the manufacturer to show the name or trademark of the manufacturer, the size or rated load, and grade for alloy eyebolts.
Referenced Standards:
IDENTIFICATION
- Each eyebolt must have a long-lasting marking from the manufacturer. The marking must include the name of the manufacturer, the size or rated load of the hardware, and, for alloy eyebolts, the grade.
Refer to the ASME Standard B30.26-2015 Chapter 26-2 Adjustable Hardware for more detailed information.
Eyebolts cannot be stacked shims or washers.
When using eyebolts for angular load handling, the plane of the eyebolts must be aligned with the direction of pull. Flat steel washers may be used under the shoulder of the eyebolt to position the plane of the eye.
Referenced Standard:
RIGGING PRACTICES
- Load Direction:
Non-shouldered eyebolts: Only for straight (in-line) loads. Shoulder eyebolts: Required for angular loads; shoulder flush and tight. - Angular Loading:
Reduce WLL per manufacturer guidance; align eye with pull direction; washers may help alignment.
For more detailed information, refer to the ASME Standard B30.26-2015 Chapter 26-2 Adjustable Hardware.
All eyebolts have the same temperature ratings.
The temperature rating of eyebolts varies depending on the material the eyebolt is made from as well as the manufacturer. Always refer to the manufacturer’s guidelines for specifications or restrictions for temperature.
Referenced Standard:
EFFECTS OF TEMPERATURE
- General Hardware (except swivel hoist rings & carbon steel eyebolts):
Consult manufacturer or qualified person if used above 400°F (204°C) or below -40°F (-40°C). - Carbon Steel Eyebolts:
Consult manufacturer or qualified person if used above 275°F (135°C) or below 30°F (-1°C).
For more detailed information, refer to the ASME Standard B30.26-2015 Chapter 26-2 Adjustable Hardware.
If a piece of equipment is received/purchased with eyebolts attached, they are safe to be used to lift the equipment because the manufacturer of the product installed them.
This is not always true. In some cases, eyebolts are installed just for maintaining or stripping the piece of equipment and are not designed to lift the whole object. Riggers are responsible for ensuring that the eyebolts used meet the requirements of the load, have the required design factors and comply with ASME standards. If in doubt, replace them before moving/lifting the load.
If you have attended a training course you are a competent rigger.
Training is only one factor in being competent to carry out rigging tasks without supervision. You must also be qualified and have sufficient experience to work safely on your own.
Referenced Standards:
ALBERTA OHS ACT
1(d) “competent” in relation to a person, means adequately qualified, suitably trained and with sufficient experience to safely perform work without supervision or with only a minimal degree of supervision
(3)(a) If work is to be done that may endanger a worker, the employer must ensure that the work is done by a worker who is competent to do the work.
TRAINING
Workers using links, master link subassemblys, rings and swivels must have appropriate training in selection, inspection, usage and rigging practices. Including impacts on the work environment and other workers.
For more information, refer to the ASME standard B30.26-2025 Chapter 26-4 Links, Master Links, Subassemblies, Rings and Swivels.
Questionnaires
Suppliers and Employers are equally responsible for ensuring the products supplied to and used at the job site are compliant with industry and legislative standards.
Click on the appropriate questionnaire below when acquiring information from the supplier or manufacturer for each of the specified products.
Refer to Alberta OHS Act – Obligations of Worksite Parties and the applicable ASME B30.9 Standards.