Cal-Royal CB6 24" Chain Bolt w...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$14.43
Cal-Royal Cal-Royal CB6 24" Chain Bolt Hardened Steel, Zinc Chromium CB6

Cal-Royal CB6 24" Chain Bolt with Hardened Steel Construction and Zinc Chromium Finish

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Model: CB6

In Stock (leaves warehouse same day if ordered before 3pm ET)

$14.43
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Cal-Royal CB6 24" Chain Bolt with Hardened Steel Construction and Zinc Chromium Finish

The Cal-Royal CB6 is a 24" chain bolt engineered as a supplement to a regular door lock, adding an extra layer of security on cabinet, double screen, garage, and industrial doors. Constructed from hardened steel with a zinc chromium (zinc plated) finish, this surface-mounted bolt measures 6-1/4" in product length with a 24" chain, making it suitable for taller or wider door applications where standard bolts fall short. Ideal for commercial settings requiring dependable auxiliary locking hardware.

Key Features

  • Chain Length: 24" chain paired with a 6-1/4" product length for extended reach on tall or oversized doors.
  • Heavy-Duty Construction: Hardened steel body with a zinc chromium (zinc plated) finish for durability and corrosion resistance.
  • Added Security: Serves as a supplement to a regular door lock, reinforcing security on cabinet, double screen, garage, and industrial doors.
  • Reversible Bolt Design: Can be used on doors opening inward by reversing the square bolt for flexible installation options.
  • Automatic Bolt Throw: Equipped with a strong hard-drawn wire spring that automatically throws the bolt when the chain is released.
  • Complete Kit: Individually poly-bagged with matching strike and mounting screws for straightforward installation.

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Surface Bolts
  • Product Type: Latch Protectors
  • Subcategory: Surface, Barrel and Dutch Door Bolts
  • Commercial/Residential: Commercial
  • Features: Supplement to a Regular Door Lock for Added Security; Equipped With a Strong Hard-Drawn Wire Spring Which Throws the Bolt Automatically When Chain is Released
  • Product Length: Chain: 24"; Product Length: 6-1/4"
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Industrial and Warehouse Facilities
  • Garage Doors and Utility Entrances
  • Cabinet and Storage Door Security
  • Double Screen Door Installations
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Cal-Royal CB6?

Cal-Royal CB6 chain bolts deliver dependable auxiliary security through hardened steel construction and a durable zinc chromium finish designed for commercial-grade performance. The automatic bolt-throw spring mechanism and reversible bolt design make this a practical, professional-grade solution for reinforcing cabinet, garage, and industrial doors where added security matters most.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Surface Bolts
Product Type:
Latch Protectors
Subcategory:
Surface, Barrel and Dutch Door Bolts
Commercial/Residential:
Commercial
Features:
Supplement to a Regular Door Lock for Added Security; Equipped With a Strong Hard-Drawn Wire Spring Which Throws the Bolt Automatically When Chain is Released
Product Length:
Chain: 24"; Product Length: 6-1/4"
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal CB6 – Frequently Asked Questions

1) What is a Cal-Royal CB6 chain bolt actually used for?
The CB6 is an auxiliary bolt that mounts on the face of a door and works alongside the door's regular lock rather than replacing it. Pull the chain to retract the square bolt, release it and a hard-drawn wire spring throws the bolt back into the strike on its own. Typical spots are cabinet doors, double screen doors, garage doors and industrial openings where the primary lock alone isn't enough.
2) How long is the chain on the Cal-Royal CB6 and how high can I mount it?
24 inches of chain, with a 6-1/4 inch bolt body. That chain length is what lets you set the bolt high on the door or at the bottom rail and still reach it from standing height, which is the usual reason to pick a chain bolt over a plain barrel bolt on a tall opening.
3) Can I use the CB6 chain bolt on a door that swings inward?
Yes. The square bolt on the CB6 reverses, so the same unit works on an inward-opening door. Sort out swing direction before you lay out the strike, since that decides which way the bolt sits.
4) Does the Cal-Royal CB6 come with a strike, or do I have to order one?
The strike is in the box. Each CB6 ships individually poly-bagged with a matching strike and the mounting screws, so a standard install needs nothing extra beyond a drill and a driver.
5) Chain bolt or latch guard: which one do I need to stop a door from being forced?
They solve different problems. A chain bolt like the CB6 adds a second point of locking, throwing a bolt into a strike to hold the leaf shut in addition to the lock. A latch protector is a steel plate that covers the gap at the latch so nobody can jimmy the existing latch, and it adds no locking of its own. For an out-swinging aluminum storefront door the plate is the answer, and ZenSupply carries the Don-Jo LP-307 in 12-gauge steel at 2-5/8 by 7 inches and the Trimco PG8000 Series panic and latch guards. If the problem is that the door only has one lock, the chain bolt is the right part.
6) Is a Don-Jo LP-307 latch protector an equivalent to the Cal-Royal CB6 chain bolt?
They do different jobs on the door. The Cal-Royal CB6 is a 24 inch chain bolt with a 6-1/4 inch product length that acts as a supplement to a regular door lock, throwing a square bolt automatically into a strike when the chain is released. The Don-Jo LP-307 is a latch protector for aluminum storefront entrance doors, 2-5/8 inch by 7 inch in 12-gauge steel for an out-swing opening; it shields the existing latch and strike area rather than adding a second locking point. If the requirement is a second bolt the CB6 answers it; if the requirement is guarding the latch already in an out-swing aluminum door, the LP-307 is the part.
7) For an out-swing aluminum entrance door, what should I use instead of a chain bolt?
An out-swing aluminum entrance door exposes the latch to the pull side, and that is the condition latch protectors are built for. The Don-Jo GLP-307 covers 2-5/8 inch by 7 inch on aluminum entrance doors in an out-swing application, and the Don-Jo NELP-207 covers a wider, shorter footprint at 3-1/2 inch by 6.5 inch in 12 gauge steel, also out swing. The Cal-Royal CB6 chain bolt is a surface-mounted auxiliary bolt aimed at cabinet, double screen, garage, and industrial doors, so it addresses adding a locking point, not covering an exposed latch on a storefront opening.
8) Is the Cal-Royal CB6 rated for commercial use or is it a residential part?
Commercial. The CB6 is built from hardened steel with a zinc chromium (zinc plated) finish, which is why it turns up on warehouse and industrial openings, utility entrances and multi-tenant buildings rather than just cabinets. The plating also gives it some corrosion resistance for exposed garage and screen door locations.
9) I need to secure the inactive leaf of a pair of doors. Will a CB6 chain bolt do that?
It will hold the inactive leaf, yes, since the bolt throws into a strike and the 24 inch chain lets you mount it high on the leaf and still release it by hand. Two things to know: it is surface mounted, so the body and chain sit on the face of the door rather than in the edge, and it is not a fire door bolt. On a labelled fire rated pair you need automatic flush bolts, not a chain bolt.
10) If a door has an exit device rather than a latch, is a latch protector still the right guard?
That opening calls for a guard sized to the device, and the Trimco PG8000 Series is a panic and latch guard series, so it covers panic hardware as well as latch applications. The Don-Jo NELP-207 at 3-1/2 inch by 6.5 inch and the LP-307 at 2-5/8 inch by 7 inch are latch protectors for aluminum entrance doors in out-swing use, sized to the latch area. The Cal-Royal CB6 is a different category again: a 24 inch chain bolt that adds an auxiliary bolt as a supplement to a regular door lock rather than shielding hardware already on the door.
11) What finishes does the Cal-Royal CB6 chain bolt come in?
One finish only: zinc chromium, which is a zinc plating. The CB6 is a single-model part with no finish or size options to specify, so there is nothing to configure on the order beyond quantity.
12) What is the difference between the Don-Jo GLP-307 and the Don-Jo LP-307 latch protectors?
Both are 2-5/8 inch by 7 inch out-swing latch protectors for aluminum entrance doors and both are catalogued for an entrance function. The LP-307 is specified for aluminum storefront entrance doors in 12-gauge steel; the GLP-307 is specified for aluminum entrance doors. Same footprint, so the mounting layout on the door is the same size either way, and the choice comes down to which one your specification calls out.
How fast can I get the Cal-Royal CB6 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Cal-Royal CB6 come with a warranty?
Absolutely. The Cal-Royal CB6 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Cal-Royal CB6?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Cal-Royal CB6 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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