Cal-Royal SB Brass Surface Bol...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.38
Cal-Royal Cal-Royal SB Brass Surface Bolt CAL-SB

Cal-Royal SB Brass Surface Bolt with BHMA LO4151 Certification

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Model: SB873-US26
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$8.38
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Cal-Royal SB Brass Surface Bolt with BHMA LO4151 Certification

The Cal-Royal SB Brass Surface Bolt is a solid brass door bolt available in multiple lengths — 3" (SB873), 4" (SB874), 6" (SB876), and 12" (SB8712) — to suit a range of commercial door applications. Each size is BHMA LO4151 certified, offering dependable auxiliary locking performance for doors requiring supplemental security. Built from solid brass for long-term durability, every unit ships packed with 2 strikes and screws and is individually poly-bagged for protection during shipping and storage. Architectural finishes are available to match surrounding door hardware.

Key Features

  • Multiple Length Options: Available in 3", 4", 6", and 12" sizes (SB873, SB874, SB876, SB8712) to accommodate various door and application requirements.
  • Solid Brass Construction: Manufactured from solid brass for long-lasting durability and reliable operation in commercial settings.
  • BHMA LO4151 Certified: Meets recognized BHMA LO4151 performance standards for auxiliary locking hardware.
  • Complete Mounting Hardware Included: Each unit is packed with 2 strikes and screws for straightforward installation.
  • Architectural Finish Options: Available in architectural finishes to coordinate with existing door hardware and design schemes.
  • Individually Poly-Bagged: Each bolt is individually poly-bagged, protecting the finish and components prior to installation.

Certifications & Compliance

  • BHMA LO4151 Certified

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Commercial/Residential: Commercial
  • Product Model: SB
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Cal-Royal SB?

Cal-Royal SB Brass Surface Bolts deliver dependable, professional-grade performance through solid brass construction and BHMA LO4151 certified operation. Offered in a range of lengths with included strikes, screws, and architectural finish options, this surface bolt is engineered for consistent, reliable function across demanding commercial door applications.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Surface Bolts
Product Type:
Surface Bolts
Subcategory:
Surface Bolts
Commercial/Residential:
Commercial
Product Model:
SB
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal SB873-US26 – Frequently Asked Questions

1) What length surface bolt do I need for a pair of doors or an inactive leaf?
The Cal-Royal SB brass surface bolt comes in 3 inch, 4 inch, 6 inch and 12 inch lengths (SB873, SB874, SB876, SB8712). Shorter 3 and 4 inch bolts are the usual pick at the head and sill of an inactive leaf where the bolt just needs to reach the frame or floor strike. The 12 inch is what you use when the bolt has to span past a transom bar, a thick sill condition, or an astragal, or when you want the throw lever reachable from standing height at the top of the door. Two strikes and screws come with every bolt, so a top-and-bottom install on one leaf needs two bolts.
2) Can I use a Cal-Royal SB brass surface bolt on a fire rated door?
Use a fire rated bolt instead. The Cal-Royal SB is a solid brass auxiliary bolt certified to BHMA LO4151, which speaks to auxiliary locking performance, not fire door assemblies. If the opening is a labeled fire door, the Ives SB1630 carries a 3-hour UL listing, and the Ives SB1600, SB1640 and SB360 are all listed as fire rated in our records. Put the Cal-Royal SB on non-labeled openings, closets, storefront back doors, and interior pairs where you want brass to match the rest of the trim.
3) Can I add a surface bolt to an existing pair of doors without cutting the door?
Yes, that is the point of a surface bolt. The Cal-Royal SB mounts to the door face with the supplied screws and its strike goes on the frame or sill, so nothing is routed into the door edge and no new bore is required. Compare that with a flush bolt, which has to be mortised into the edge of the leaf. On an existing pair where you only need to hold the inactive leaf, the surface bolt is the retrofit that does not put a router to a finished door.
4) Does the Cal-Royal SB surface bolt lock with a key?
The Cal-Royal SB is a solid brass auxiliary bolt that throws and retracts by hand. If the requirement is a bolt that cannot be released by anyone on the secured side, the Ives SB1630 is a heavy duty steel locking surface bolt with keyed security and a 1 inch throw, and the ABH HD1805 uses an auto-locking 3/4 inch stainless steel bar. Those are the ones to look at when the opening needs to resist deliberate release rather than just hold a leaf shut.
5) What is the closest solid brass surface bolt to the Cal-Royal SB?
The Emtek 8511 is a solid brass surface bolt in a 6 inch length, which lines up with the 6 inch (SB876) Cal-Royal SB. The Delaney Solid Brass Surface Bolt is another solid brass option in the same category. The Cal-Royal SB itself is solid brass and comes in 3 inch (SB873), 4 inch (SB874), 6 inch (SB876), and 12 inch (SB8712) lengths, so if you need a length other than 6 inch, the Cal-Royal range is the broader one to work from.
6) What should I use instead of a brass surface bolt on a high traffic industrial door?
For openings that take heavy use, the heavy duty steel bolts are the alternative: the Ives SB1600 is a heavy duty steel surface bolt with a 3-1/2 inch throw, the Ives SB360 is a heavy-duty steel bolt with a 1-1/4 inch throw in a 12 inch length, and the ABH HD1805 is a heavy duty bolt with an auto-locking 3/4 inch stainless steel bar. The Cal-Royal SB is solid brass and BHMA LO4151 certified, and its 12 inch SB8712 matches the SB360 on length.
7) What finishes does the Cal-Royal SB surface bolt come in, and can I match my existing door hardware?
Six architectural finishes: US3 polished brass, US5 antique brass, US10B antique bronze oiled, US15 satin nickel, US15A satin nickel oxidized, and US26 polished chrome. All six are offered in every length (3, 4, 6 and 12 inch), so a property manager standardizing a building can run the same finish across short bolts on closet leaves and long bolts on entry pairs. US26 polished chrome and US15 satin nickel are the two that read closest to the brushed and bright stainless trim common on commercial levers and closers.
8) Is a surface bolt enough security on its own, or do I still need a lock?
A surface bolt is auxiliary hardware, not the lock on the opening. The Cal-Royal SB is BHMA LO4151 certified for auxiliary locking, meaning it holds an inactive leaf shut so the active leaf's lockset has something to latch against. You still need a mortise lock, cylindrical lock or exit device on the active leaf. On a pair, the normal setup is bolts top and bottom on the inactive leaf and the locking hardware on the active leaf.
9) Does the Cal-Royal SB surface bolt come with a strike, or do I have to order that separately?
Strikes are included. Each Cal-Royal SB bolt ships with 2 strikes and screws, individually poly bagged. Two strikes per bolt covers the two common mounting conditions on one bolt, a frame or jamb strike and a floor or sill strike, so you are not making a second order to finish the install. Nothing else is required beyond a drill and driver for the mounting screws.
10) Brass or steel surface bolt for a commercial door?
Depends on what the opening is doing. The Cal-Royal SB is solid brass and is rated commercial, which suits interior pairs, offices, retail and multi-tenant corridors where the finish has to coordinate with brass or bronze trim. Where the leaf takes abuse, gets slammed, or sits in a warehouse or service corridor, a heavy duty steel bolt like the Ives SB1600 or Ives SB360 is the tougher choice, and the SB360 comes in a 12 inch length with a 1-1/4 inch throw. Brass buys you the finish match and corrosion behavior; steel buys you the abuse tolerance.
11) What is the difference between the Cal-Royal SB and the Emtek 8511 or Delaney solid brass surface bolts?
All three are solid brass slide bolts, and the split is in range and certification. The Cal-Royal SB is BHMA LO4151 certified and comes in four lengths, 3, 4, 6 and 12 inch, across six finishes. The Emtek 8511 is a solid brass surface bolt in a single 6 inch length. Delaney offers a solid brass surface bolt and a decorative solid brass version in its BV7600 line, which lean residential and architectural in styling. If a spec sheet calls for a BHMA certified auxiliary bolt, the Cal-Royal SB is the one of these carrying that certification in our records.
12) Is the Cal-Royal SB surface bolt handed, and does it matter which door it goes on?
No handing. The Cal-Royal SB is a surface applied slide bolt, so it mounts to the face of the door with screws and works the same on a left or right hand leaf. What decides placement is which leaf is inactive and where you want the throw lever, at the head, at the sill, or both. Because it surface mounts, there is no mortise pocket or bore to cut into the door, which is why it is a common retrofit on existing pairs.
13) Which surface bolt suits a decorative or historic door rather than a commercial corridor?
The Delaney Decorative Solid Brass Surface Bolt is styled for visible decorative applications. The Cal-Royal SB is a commercial-duty solid brass bolt offered in architectural finishes including US3 polished brass, US5 antique brass, US10B antique bronze oiled, US15 satin nickel, US15A satin nickel oxidized, and US26 polished chrome, so it can be matched to surrounding trim on an exposed door as well.
14) How much throw does the Cal-Royal SB give compared to the Ives surface bolts?
The published throws in the comparable range are the Ives SB1600 at 3-1/2 inches, the Ives SB360 at 1-1/4 inches, and the Ives SB1630 and SB1640 at 1 inch each. The Cal-Royal SB is described by its overall bolt length rather than throw - 3 inch, 4 inch, 6 inch, and 12 inch - so if the drawing calls out a specific throw dimension into the strike, the Ives models are the ones stating it.
15) Is the Trimco 4800 a substitute for the Cal-Royal SB surface bolt?
The Trimco 4800 Series is a surface bolt series and sits in the same application as the Cal-Royal SB. Where they differ for spec purposes is that the Cal-Royal SB is solid brass, BHMA LO4151 certified, and ships with 2 strikes and screws per unit in a 3 inch, 4 inch, 6 inch, or 12 inch length. If the submittal calls for the BHMA LO4151 certification specifically, order against the Cal-Royal SB.
16) I am standardizing surface bolts across a portfolio - which one covers the most openings?
The Cal-Royal SB runs four lengths - 3 inch (SB873), 4 inch (SB874), 6 inch (SB876), and 12 inch (SB8712) - each in six architectural finishes, so one part family covers short bolts on cabinet-height leaves through 12 inch bolts on tall pairs. Among the peers, the Emtek 8511 is offered at 6 inch and the Ives SB360 at 12 inch, so matching a fleet across several lengths from a single series points to the Cal-Royal SB.
17) Are Cal-Royal SB surface bolts suitable for schools, hospitals and government buildings?
They are built for that kind of work. The SB is classified commercial and Cal-Royal lists it for office buildings, educational facilities, healthcare institutions, retail, industrial and warehouse space, multi-tenant residential and government or municipal buildings. Solid brass construction and BHMA LO4151 certification are what an institutional spec is usually looking for on an auxiliary bolt. One caveat for facility work: for a labeled fire door opening, choose a fire rated bolt such as the Ives SB1630, which is 3-hour UL listed.
18) How many Cal-Royal SB bolts do I need to order per pair of doors?
Two per inactive leaf is the standard order, one at the head and one at the sill, and each bolt arrives with its own 2 strikes and screws. If you are only holding the leaf at the top, one bolt does it. Mixing lengths on the same leaf is fine, since all four lengths (3, 4, 6 and 12 inch) come in the same six finishes, so a 12 inch at the head and a 4 inch at the sill still match.
How fast can I get the Cal-Royal SB873-US26 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 SB873-US26 come with a warranty?
Absolutely. The Cal-Royal SB873-US26 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 SB873-US26?
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
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