Sure-Loc Interconnect Lock Gra...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$187.18
$124.46
Sure-Loc Interconnect Lock Grade 2 with Schlage SC1 Keyway, 3-Hour Fire Rated

Sure-Loc Interconnect Lock Grade 2 with Schlage SC1 Keyway, 3-Hour Fire Rated

(No reviews yet) Write a Review

Model: IN301-CDR 32D
Selected Finish is

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

$187.18
$124.46
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Sure-Loc Interconnect Lock Grade 2 with Schlage SC1 Keyway, 3-Hour Fire Rated

The Sure-Loc Interconnect Lock Grade 2 combines a latch and deadbolt into one interconnected mechanism for reliable commercial door security. Built to meet ANSI Grade 2 standards, this lockset features a 6-pin Schlage SC1 keyway, 4" center-to-center hole spacing, and an adjustable 2-3/8" or 2-3/4" (60 or 70mm) backset. It fits doors ranging from 1-3/8" to 2" (35-50mm) thick and carries a 3-hour UL fire rating, making it well suited for a wide range of commercial door preparations and replacement applications where a proven, code-compliant interconnected lockset is required.

Key Features

  • Door Thickness Compatibility: Fits doors from 1-3/8" to 2" (35-50mm) thick for broad application flexibility across new and retrofit installations.
  • Adjustable Backset: Configurable to a 2-3/8" or 2-3/4" (60 or 70mm) backset to accommodate existing door preparation without additional hardware.
  • 4" Center-to-Center Spacing: Standard 4" center-to-center hole spacing simplifies installation and replacement of existing interconnect locksets.
  • 6-Pin Schlage SC1 Keyway: Standard 6-pin Schlage SC1 keyway is compatible with widely available key blanks and duplication services.
  • ANSI/BHMA Grade 2 Construction: Meets ANSI Grade 2 standards for dependable performance in commercial-duty applications.
  • 3-Hour UL Fire Rating: UL listed for 3-hour fire-rated door assemblies, supporting code-compliant installations in rated openings.
  • Interconnected Latch and Deadbolt: Single-motion interconnected mechanism retracts the deadbolt automatically when the lever is turned from the inside, simplifying egress.
  • Lever Style Options: Additional lever styles are available upon request for matching existing hardware finishes and design preferences.

Certifications & Compliance

  • ANSI/BHMA Grade 2
  • 3-Hour UL Fire Rated

Technical Specifications

  • Collection: Door Hardware
  • Department: Door Hardware
  • Subcategory: Commercial Hardware
  • Commercial/Residential: Commercial
  • Electronic: No
  • Product Group: Commercial Hardware
  • Product Category: Commercial Hardware
  • MAP Policy: None

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Fire-Rated Door Assemblies

Why Sure-Loc IN301?

Sure-Loc interconnect locks are built to ANSI/BHMA Grade 2 standards and carry a 3-hour UL fire rating, delivering dependable, code-compliant performance for demanding commercial door applications. With a standard 6-pin Schlage SC1 keyway and adjustable backset options, the offers straightforward installation and broad compatibility for facility managers and locksmiths specifying reliable commercial door hardware.

Manufacturer Resources

Product Specs

Series:
Interconnect Lock Grade 2
Department:
Door Hardware
Subcategory:
Commercial Hardware
Commercial/Residential:
Commercial
Electronic:
No
Product Group:
Mechanical Locks
Product Category:
Mechanical Locks
MAP Policy:
None
Product Subgroup:
Bored Locksets
Product Type:
Interconnected Lock

Sure-Loc IN301-CDR 32D – Frequently Asked Questions

1) Will the Sure-Loc IN301 interconnect lock fit a 1-3/4 inch commercial door?
Yes. The Sure-Loc IN301 interconnect lock covers doors from 1-3/8 to 2 inches (35-50mm) thick, so a standard 1-3/4 inch commercial door sits right in the middle of the range. That range also covers older 1-3/8 inch interior doors and thicker 2 inch slabs without extra parts.
2) Does this lock work with the existing 2-3/8 inch bore in my door, or do I need a 2-3/4 backset?
Either one. The latch is adjustable for a 2-3/8 inch or 2-3/4 inch (60 or 70mm) backset, which are the two standard bored-door backsets, so it drops into existing prep without buying a separate latch.
3) Can I use the Sure-Loc IN301 on a fire-rated door assembly?
It carries a 3-hour UL fire rating, so it is listed for use on rated openings up to 3 hours. That covers the typical stairwell and corridor doors in offices, schools, healthcare and multi-tenant residential buildings.
4) Will the Sure-Loc IN301 replace my existing interconnect lockset with 4 inch hole spacing?
Yes, the hole spacing is 4 inches center to center between the lever bore and the deadbolt bore, which is the standard interconnect layout. Combined with the adjustable 2-3/8 or 2-3/4 backset and the 1-3/8 to 2 inch thickness range, it retrofits most existing interconnect preps with no new boring.
5) Can I key this lock to my existing Schlage keys?
The cylinder uses a 6-pin Schlage SC1 keyway, so it accepts standard SC1 blanks and can be keyed into an existing SC1 system by any locksmith. Key duplication is available anywhere that cuts SC1.
6) Do tenants have to turn the deadbolt separately to get out?
No. The latch and deadbolt are interconnected, so turning the inside lever retracts both in one motion. That single-motion egress is why interconnect locks are specified on apartment and multi-tenant entry doors instead of a separate lever and deadbolt.
7) What is a direct mechanical alternative to the Sure-Loc IN301 interconnected lock?
The Schlage CS210-B500 is the closest mechanical counterpart: it is a Grade 2 entrance single-locking interconnected lockset in the CS210 series, rated heavy duty. The Sure-Loc IN301 is likewise a Grade 2 interconnected lockset combining latch and deadbolt, with a 6-pin Schlage SC1 keyway, adjustable 2-3/8 inch or 2-3/4 inch backset, 4 inch center-to-center spacing, and a 3-hour UL fire rating for doors 1-3/8 inch to 2 inch thick. Both put latch and deadbolt on one interconnected chassis for single-motion egress; the CS210 is offered as an entrance function, while the IN301 fits doors across that 1-3/8 to 2 inch range on either backset.
8) If I need credential-based access instead of keys on an interconnected opening, what replaces the Sure-Loc IN301?
Look at the Dormakaba Saffire LX-I, an electronic interconnect RFID lockset with Bluetooth and a 3-hour fire rating, or the Dormakaba InSync RI5100G, a battery operated interconnected cylindrical latch and deadbolt unit using electronic RFID keys, shown with the Gala lever, right hand, in satin chrome. The Sure-Loc IN301 is a mechanical lockset with no electronic components, keyed to a 6-pin Schlage SC1 keyway, so it is credential-free and uses standard SC1 blanks. The IN301 also carries a 3-hour UL fire rating, as does the Saffire LX-I, so the rated-opening requirement is met either way; the decision is key management versus RFID credentials, and whether the opening has handing specified as the InSync unit does.
9) Can I use the Schlage S270 classroom lock in place of the Sure-Loc IN301?
Not as a like-for-like swap. The Schlage S270 is a Grade 2 cylindrical keyed lever lock in classroom function from the S200 series, heavy duty - it is a single bored lockset with no deadbolt. The Sure-Loc IN301 is an interconnected lockset in which the latch and deadbolt share one mechanism, so turning the inside lever retracts the deadbolt in a single motion. An opening prepped for the IN301 has two bores at 4 inch center-to-center; the S270 uses a single bore, so substituting it leaves the deadbolt hole unfilled and drops the deadbolt security. Use the S270 only where a classroom-function latch alone is what the opening calls for.
10) Is a Grade 2 interconnect lock heavy duty enough for an apartment building entry door?
Grade 2 is the commercial-duty middle tier of ANSI/BHMA and is the grade normally specified for multi-family and light commercial entries. The Sure-Loc IN301 is built to Grade 2 and listed as a commercial product, and it is used in offices, schools, healthcare, retail, government and multi-tenant residential openings. For very high traffic main entrances, a Grade 1 mortise lock is the step up.
11) What are the alternatives to the Sure-Loc IN301 interconnect lock?
Among Grade 2 interconnected locksets, the Schlage CS210-B500 is an entrance-function single-locking interconnect rated heavy duty, and the Deltana CL300ILC is an entry-function Grade 2 interconnect with the Clarendon lever. If you want keyless access instead of a key cylinder, the Dormakaba Saffire LX-I is an electronic RFID interconnect lockset with a 3-hour fire rating and Bluetooth, and the Dormakaba InSync RI5100G is a battery-operated RFID interconnected latch and deadbolt. The Sure-Loc is the mechanical, non-electronic option.
12) Should I use an interconnected lock or a separate classroom lever for a school corridor door?
Different jobs. An interconnected lock like the Sure-Loc IN301 pairs a latch with a deadbolt and retracts both from one inside lever turn, which is what you want on entry doors where a deadbolt is required but single-motion egress is not negotiable. A classroom door usually wants a classroom-function cylindrical lever with no deadbolt, such as the Schlage S270 Grade 2 classroom lock. If the opening needs deadbolt security, go interconnect; if it needs keyed outside control only, go classroom function.
13) Is there another Grade 2 interconnected lock with a lever already specified?
Yes. The Deltana CL300ILC is a Grade 2 interconnected lock in entrance function supplied with the Clarendon lever, so the lever style is fixed by the model number. The Sure-Loc IN301 is also a Grade 2 interconnected lockset, offered in 32D satin stainless, with additional lever styles available on request. Choose the CL300ILC if you want the Clarendon lever design as a catalog item, or the IN301 if you are matching an existing opening prep on a 2-3/8 inch or 2-3/4 inch backset with a 4 inch center-to-center hole pattern.
14) Are the Schlage residential handlesets an option for an interconnected commercial opening?
They serve a different application. The Schlage Residential Plymouth FC58 is an outside handleset with 3 and 4 trim in entrance function, and the FC94 Latitude with Collins trim is an inside dummy handleset - dummy trim has no latching mechanism at all. The Sure-Loc IN301 is a commercial-rated interconnected lockset built to ANSI Grade 2 with a 3-hour UL fire rating for rated assemblies in offices, schools, healthcare, retail, and multi-tenant residential buildings. For a fire-rated or commercial-duty interconnected opening, stay with the IN301 or another interconnected lockset; the residential handlesets suit decorative entry applications instead.
15) What other interconnected lockset lines should I consider for standardizing a multi-family building?
Dormakaba offers two mechanical interconnected lockset lines worth reviewing - the J300 series and the QCI200 series - alongside the Grade 2 Deltana CL300ILC in entrance function. The Sure-Loc IN301 is a Grade 2 interconnected lockset with a 6-pin Schlage SC1 keyway, which matters for a fleet because SC1 blanks and duplication are widely available and the building can be keyed on a common system. It also fits doors from 1-3/8 inch to 2 inch thick on a 2-3/8 inch or 2-3/4 inch backset, so one part number usually covers mixed unit door preps across a property.
16) What finish does this Sure-Loc interconnect lock come in?
It is supplied in 32D satin stainless, the brushed stainless finish that matches most commercial lever hardware and exit devices already in the building. If you need to match a darker or brass suite, you are matching a different finish family and should specify accordingly.
17) Can I get the Sure-Loc IN301 with a different lever design?
Additional lever styles can be supplied on request, which matters when you are standardizing a building and the existing levers are a different shape. The base configuration is the 32D satin stainless lever set.
How fast can I get the Sure-Loc IN301-CDR 32D 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 Sure-Loc IN301-CDR 32D come with a warranty?
Absolutely. The Sure-Loc IN301-CDR 32D 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 Sure-Loc IN301-CDR 32D?
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 Sure-Loc IN301-CDR 32D 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.
!