Coupling Link - Grade 100

Grade 100 Chain Coupling Links and Connecting Links

Grade 100 coupling links (also called connecting links) join chain to chain, to a master link, or to a hook, which makes them a building block of Grade 100 chain sling assemblies. This collection brings together forged alloy steel links from KWB, Gunnebo, and Pewag in sizes from 9/32" to 3/4", so you can match the connector to the chain you already run.

Grade 100 is a higher-strength alloy chain grade, and the link needs to be matched to it. The KWB coupling links here are forged alloy steel with a Signal Violet finish, an easy visual cue that the link is Grade 100. They are listed as meeting or exceeding ASTM A952 / A952M and ASME B30.26, and each size lists its working load limit.

What You'll Find in This Collection

• KWB chain coupling links: six sizes from 9/32" to 3/4", built by Pewag and branded KWB, with a Signal Violet finish.
• Gunnebo C-Lok CL and C-Lok Duo CLD connecting links: Grade 100 links in 5/16", 3/8", 1/2", and 5/8". The C-Lok CL is a clevis-style link with a hinged body and internal locking pin, finished in high-visibility fluorescent powder coat.
• Gunnebo Coupling Link G: a Grade 100 connecting link in 5/16", 3/8", 1/2", and 5/8".
• Pewag 3/4" connecting link: a Grade 100 link rated for 35,300 lbs, made in Europe.
• Listed standards: KWB links list ASTM A952 / A952M and ASME B30.26, while the Gunnebo links list EN 1677:2008, ASTM A952 / A952M, and AS 3776:2015.

KWB Grade 100 Coupling Link Sizes and Ratings

• 9/32" link: 4,300 lb working load limit
• 5/16" link: 5,700 lb working load limit
• 3/8" link: 8,800 lb working load limit
• 1/2" link: 15,000 lb working load limit
• 5/8" link: 22,600 lb working load limit
• 3/4" link: 35,300 lb working load limit

Always confirm the working load limit on the link itself and on the product page, and review the manufacturer's spec sheet and product safety warnings before you put a link to work.

Common Applications

• Chain sling assemblies: connecting Grade 100 chain to master links, hooks, and other fittings.
• Rigging and hoisting: connection points in lifting setups built around Grade 100 chain.
• Material handling: chain assemblies used in industrial material handling.
• Chain-to-chain connections: joining chain in assemblies built to the same grade.

How to Choose the Right Coupling Link

Start with the chain. Choose a coupling link sized for your chain, and keep the grade matched. An assembly is only as strong as its lowest-rated component, so a Grade 100 link belongs with Grade 100 chain and Grade 100 fittings. If your assembly runs on a different grade, browse Grade 80 connecting links or Grade 120 connecting links.

Next, check the working load limit against the job. Compare the rating of the link and every other component in the assembly with the load and the way the assembly will be rigged, and review the manufacturer's documentation or a qualified person if you are unsure.

Finally, choose the style. KWB coupling links are an eye-style link that works with chain, hooks, and master links. The Gunnebo C-Lok CL uses a clevis-style design with a hinged body and internal locking pin, and it works with the Gunnebo GrabiQ system, so it is a natural fit if your assemblies already use Gunnebo GrabiQ components.

Related Collections

• Connecting Links & Swivels
• Grade 100 Chain
• Grade 80 Connecting Links
• Grade 120 Connecting Links
• Crosby® A-1337 LOK-A-LOY Connecting Links
• Eye & Eye Swivel - Galvanized
• Jaw & Eye Swivel - Galvanized
• Rigging Hardware

Frequently Asked Questions

What is a Grade 100 coupling link?

It is a forged alloy steel connector rated for Grade 100 chain. It joins chain to chain, to a master link, or to a hook, and it is a common component in Grade 100 chain sling assemblies.

What does the Signal Violet finish mean?

KWB uses a Signal Violet finish on its Grade 100 coupling links so the grade is easy to recognize on sight. Always confirm the grade and working load limit from the markings on the link and the product page.

Should the link match the grade of my chain?

Yes. A mixed-grade assembly is rated by its lowest-rated component, so a Grade 100 link is best paired with Grade 100 chain and fittings. If your chain is a different grade, look for a link in that grade instead.

What is the difference between KWB and Gunnebo links?

KWB coupling links are eye-style Grade 100 links, built by Pewag and branded KWB. The Gunnebo C-Lok CL is clevis-style, with a hinged body and internal locking pin, and it belongs to the Gunnebo GrabiQ system. Both are Grade 100, and each lists a rating by size.

What standards do these links list?

The KWB links list ASTM A952 / A952M and ASME B30.26. The Gunnebo links list EN 1677:2008, ASTM A952 / A952M, and AS 3776:2015. Review the manufacturer's documentation on each product page for the details that apply to your use.