BEST 1E Series Standard 1-1/8"...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$115.00
$81.90
BEST 1E Series Standard 1-1/8" Mortise Cylinder, 6-Pin SFIC Prep Less Core, C258 Clover Cam, For Use With 30/40/45H Deadbolt, 40/45H C/CHB Interior, Satin Chrome Finish

BEST 1E Series Standard 1-1/8" Mortise Cylinder with 6-Pin SFIC Prep and C258 Clover Cam

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Model: 1E64-C258RP2626
From the E Series Cylinders Collection
$115.00
$81.90
Selected Finish is

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

$115.00
$81.90
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BEST 1E Series Standard 1-1/8" Mortise Cylinder with 6-Pin SFIC Prep and C258 Clover Cam

Professional Mortise Cylinder for Commercial Lock Applications

The BEST 1E Series Standard Mortise Cylinder delivers professional-grade security with precision-machined brass construction and 1-1/8" standard sizing for mortise lock applications. This cylinder features 6-pin SFIC preparation without core and includes the C258 clover cam for compatibility with 30/40/45H deadbolts and 40/45H C/CHB interior applications. The satin chrome finish provides durability and professional appearance for commercial installations.

Professional Features & Benefits

  • Standard Mortise Sizing: 1-1/8" diameter designed for standard mortise lock applications with precise fit and reliable operation.
  • 6-Pin SFIC Preparation: Small Format Interchangeable Core preparation allows for flexible keying options and easy core changes without cylinder removal.
  • C258 Clover Cam: Specifically designed for use with 30/40/45H deadbolt and 40/45H C/CHB interior applications for proper lock function.
  • Precision Machined Construction: Manufactured from brass bar stock for exceptional durability and long-term reliability in commercial applications.
  • Enhanced Security Design: Diagonal set screw mounts in cylinder wall to securely hold the cylinder in the housing, preventing unauthorized removal.
  • Master Key Compatibility: BEST interchangeable core system allows integration into existing BEST master key systems for comprehensive access control.
  • Versatile Application Options: Can be modified with different cams and cylinder rings to function with other manufacturers' locks for flexible installation requirements.
  • Professional Finish: Satin chrome finish provides corrosion resistance and maintains appearance in high-use commercial environments.

Technical Specifications

  • Collection: E Series Cylinders
  • Commercial/Residential: Residential
  • Department: Door Hardware
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Product Subgroup: Cylinders
  • Product Type: Cylinders
  • Series: 1E Series
  • Subcategory: Parts and Accessories

Installation & Operation

This mortise cylinder is designed for use with compatible BEST lock systems and other manufacturers' locks when properly configured. Refer to the parent lock installation instructions and manufacturer documentation for proper integration. Ensure compatibility with existing hardware and verify cam selection matches lock requirements before installation.

Professional Applications

  • Commercial Office Building Lock Systems
  • Educational Facility Security
  • Healthcare Institution Access Control
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Industrial Facility Security Systems
  • Retail Establishment Access Points

Why Choose BEST Quality?

BEST 1E Series cylinders deliver professional-grade reliability with precision-machined brass construction and enhanced security features including diagonal set screw mounting. The interchangeable core system provides flexible keying options and easy integration into existing BEST master key systems. Engineered for demanding commercial applications where dependable security and operational flexibility are essential.

Manufacturer Resources

E Series Service Manual

Product Specs

Series:
1E Series
Subcategory:
Parts and Accessories
Product Group:
Parts and Accessories
Product Subgroup:
Cylinders
Product Type:
Cylinders
Commercial/Residential:
Residential
Collection:
E Series Cylinders
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

BEST 1E64-C258RP2626 – Frequently Asked Questions

1) Does the BEST 1E mortise cylinder come with a core, or do I need to order the SFIC core separately?
It ships less core. The 1E Series housing is machined with 6-pin SFIC prep, so you supply the small format interchangeable core and control key to key it into your existing BEST system. Buy the housing and the core as two line items.
2) Which BEST locks does the C258 clover cam work with?
The C258 clover cam is the one BEST specifies for 30H, 40H and 45H deadbolts, and for 40H/45H C and CHB interior functions. Cam choice is what makes a mortise cylinder actually retract or throw the lock, so if your lock is a different function you need a different cam, not a different cylinder length.
3) Can I use this BEST cylinder in another manufacturer's mortise lock?
Yes, with the right parts. The 1E housing can be fitted with a different cam and different cylinder rings to drive other makers' mortise locks. The threads are standard mortise; it is the cam that has to match the lock. Order the cam that the target lock calls for instead of assuming the C258 clover will work.
4) Will this cylinder key into our existing BEST master key system?
That depends on the core, not the housing. The 1E housing is just the brass shell with SFIC prep; drop in a BEST small format core cut to your existing keyway and masterkey pinning and the opening joins the system. For a property manager standardizing a building, SFIC is the point: you rekey by swapping cores with a control key, no lock disassembly.
5) I need a mortise cylinder but we are not a BEST SFIC house. What else is there?
If you are not running BEST small format cores, a conventional mortise cylinder is simpler. The Corbin Russwin 1000 Series Grade 1 mortise cylinder comes in 1-1/2 inch with an A02 straight cam, and the CR1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, which is the closest cam profile to this C258 clover. For a 1-1/8 inch length in Schlage C keyway, the Detex MC65 is a 6-pin commercial mortise cylinder in that same size.
6) Will the BEST 1E cylinder work in a rim exit device, or do I need something else?
No. The BEST 1E Series is a mortise cylinder with a threaded 1-1/8 inch body and a C258 clover cam, which is the wrong body and cam for a rim device. For rim applications, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and the Schlage 20-022 is the same cylinder with a horizontal tailpiece cam. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. Match the tailpiece orientation to what the exit device chassis calls for.
7) What is the closest equivalent to the BEST 1E mortise cylinder if the door is on a Corbin Russwin keyway instead?
The BEST 1E Series cylinder is a 1-1/8 inch mortise cylinder with 6-pin SFIC prep and a C258 clover cam. On the Corbin Russwin side, the Corbin Russwin 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, which is the same cloverleaf cam geometry in a longer housing. If you need a solid (non-housing) mortise cylinder in that line, the Corbin Russwin 1000 Grade 1 mortise cylinder is 1-1/2 inch with an A02 straight cam, which is a different cam shape and will not drive a lock that expects a clover cam.
8) I need a 1-1/8 inch mortise cylinder but my building is keyed Schlage C, not BEST. What should I order?
The BEST 1E Series cylinder is built around the BEST small format interchangeable core system and ships with 6-pin SFIC prep less core, so it keys into a BEST system. For a Schlage C keyway at the same body size, the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder with a Schlage C keyway. Confirm the cam on the lock you are servicing before you order, since the 1E is supplied with the C258 clover cam for 30/40/45H deadbolt and 40/45H C/CHB interior applications.
9) I am rekeying an aluminum storefront with an Adams Rite deadlock. Is the BEST 1E the right cylinder?
Not by default. The BEST 1E Series is a 1-1/8 inch mortise cylinder with a C258 clover cam intended for 30/40/45H deadbolt and 40/45H C/CHB interior applications. For Adams Rite storefront hardware, the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder rated for doors from 1/2 inch minimum thickness. If the opening uses an MS1847 deadlock and you want a pull-mounted cylinder, the Adams Rite 4024 mounts with a trim plate and the 4025 uses through-screws; the 4026 is the wood door version for the 5017 deadlock.
10) I am putting cylinders in Schlage L9000 mortise locks. Does the BEST 1E fit those?
The BEST 1E Series is supplied with the C258 clover cam, which BEST specifies for 30/40/45H deadbolt and 40/45H C/CHB interior applications, so verify the cam against the L9000 before ordering. A cylinder built specifically for that lock is the Corbin Russwin 1080, a 1-1/2 inch LFIC mortise cylinder, 6-pin, listed for Schlage L9000 mortise locks with the A01 Schlage L cam. Note the 1080 is a large format interchangeable core cylinder, so it takes LFIC cores rather than the small format cores the 1E is prepped for.
11) What do the RP2 rings on the BEST 1E cylinder do?
RP2 is the 6-pin mortise ring set. The ring takes up the gap between the cylinder face and the lock trim so the cylinder sits flush and the diagonal set screw in the cylinder wall can bite and hold it in the housing. Getting the ring stack right is what stops a cylinder from spinning or being twisted out.
12) What is the difference between the BEST 1E small format core prep and a full size interchangeable core cylinder?
The BEST 1E Series is prepped for a 6-pin small format interchangeable core (SFIC) and is supplied less core, so the figure-eight core drops in and out without pulling the cylinder. A full size interchangeable core is a physically larger core in a different prep: the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam, and the Schlage 20-057-C is an FSIC core in C keyway, 643E aged bronze. SFIC and FSIC cores are not interchangeable with each other, so standardize a facility on one or the other.
13) My lock is a key-in-knob or key-in-lever, not a mortise lock. Can I use the BEST 1E?
No. The BEST 1E Series threads into a mortise lock body and drives it with the C258 clover cam; a key-in-knob or key-in-lever chassis takes a different cylinder shape entirely. The Kaba Ilco 1539 is a universal key-in-knob and lever cylinder, the 1579 is the knob and lever cylinder for Sargent, and the 1599 is a key-in-knob replacement cylinder. For a key-in-deadbolt, the Kaba Ilco 1549 covers that. On Falcon lever locks, the A23161-05 G is a key-in-lever cylinder in the 6-pin G keyway, keyed different with two cut keys.
14) Is there a high-security alternative to the BEST 1E for residential handlesets and deadbolts?
The BEST 1E Series is a commercial-style mortise cylinder on the BEST interchangeable core system. Residential handleset and deadbolt openings usually take a rim-type cylinder instead: the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, and the 1065244 is a 5-pin lazy motion rim cylinder with an Emtek tailpiece. For Arrow JL interconnected locks or an Emtek handleset outside cylinder, the Medeco 1065140 is the 5-pin retrofit. Emtek's own replacement is the CY4 cylinder, sold each.
15) What finish is the BEST 1E mortise cylinder and will it match my other hardware?
It is 626 satin chrome, the most common commercial finish and the usual match for satin chrome levers, exit device trim and mortise escutcheons. If your openings are 630 stainless, 626 reads very close in brushed silver but is not an exact match.
16) Is the BEST 1E cylinder body brass or plated steel?
Machined from brass bar stock, then finished in satin chrome. Brass is what lets the threads and the cam hub hold tolerance over years of core swaps, and the plating handles corrosion on high-traffic commercial openings.
How fast can I get the BEST 1E64-C258RP2626 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 BEST 1E64-C258RP2626 come with a warranty?
Absolutely. The BEST 1E64-C258RP2626 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 BEST 1E64-C258RP2626?
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 BEST 1E64-C258RP2626 from ZenSupply?
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