PDQ HSC425 High Security 6-Pin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$65.50
PDQ HSC425 High Security 6-Pin Key in Knob/Lever Cylinder KD/KA

PDQ HSC425 High Security 6-Pin Key in Knob/Lever Cylinder KD/KA

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Model: HSC425626
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$65.50
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PDQ HSC425 High Security 6-Pin Key in Knob/Lever Cylinder KD/KA

PDQ High Security Cylinders, Cores and Cams

PDQ High Security cylinders and cores add mechanical barriers that a standard pin tumbler core does not have, resisting drilling, picking and casual key copying. The family covers key in knob/lever cylinders, mortise/rim combo and mortise cylinders, small format (SFIC) and large format Schlage compatible (LFIC) interchangeable cores, and high security cams for the mortise cylinders.

Two levels are offered. Standard High Security cylinders use two hardened anti-drill pins and a proprietary PDQ keyway with a sidebar. High Security cylinders and cores use a minimum of 11 anti-drill and stainless steel pins. Because the sidebar keyway blank is not a standard retail key wall profile, duplication is limited to controlled sources.

Key Features

  • Proprietary PDQ keyway with sidebar, a second locking element separate from the pin stack
  • Standard High Security: 2 hardened anti-drill pins; High Security: minimum of 11 anti-drill and stainless steel pins
  • Key in knob/lever, mortise/rim combo (1-1/8") and mortise (1-1/4" and 1-1/2") cylinder formats
  • SFIC cores in 6-pin and 7-pin and an LFIC Schlage compatible 6-pin core
  • Cams to suit Adams Rite, Accentra (Yale), Russwin/PDQ, Falcon, Schlage and Sargent offset type mortise applications
  • Cylinders include 2 cut keys; cores include keying charges and 2 cut keys
  • Not available 0 bitted, and key blanks for high security cylinders are not sold

Technical Specifications

  • Standard high security: 2 hardened anti-drill pins; proprietary PDQ keyway with sidebar
  • High security: Minimum of 11 anti-drill and stainless steel pins
  • Includes: Cylinders include 2 cut keys; cores include keying charges and 2 cut keys
  • Restrictions: Not available '0' bitted; key blanks for high security cylinders not available; LFIC mortise & rim housings do not include IC core
  • Manufacturer Part Number: HSC425

Available Options

  • Finish: 626 - Satin Chrome, 605 - Bright Brass
  • Also selected when ordering: Keying

Each configuration has its own PDQ part number, for example HSC425626.

Typical Applications

  • Server and data rooms
  • Evidence and records storage
  • Pharmacy or narcotics cabinets
  • Exterior perimeter entries

Frequently Asked Questions

What makes a cylinder core high security instead of standard?
PDQ High Security cores add hardened anti-drill pins plus a proprietary keyway with a sidebar, mechanical barriers a standard pin tumbler core does not have. A standard core relies on the pin stack alone.

Which PDQ products do the high security cores work with?
PDQ lists them as compatible with its GP, SD and CL Series Grade 2 locks, KV Series deadbolts, and trim including 6T thumb latches, 4P plate pulls, 4GW grip pulls and 6S rose trim.

Is PDQ High Security the same as the VAULT keying system?
No. High Security is a proprietary sidebar keyway with hardened anti-drill pins in a familiar cylinder format. VAULT is a separate PDQ platform built around a patented tapered gate (U.S. Patent #12338653).

Product Specs

Department:
Door Hardware
Product Group:
Cylinders, Keys and Strikes
Product Subgroup:
Cylinders
Product Type:
Key-in-Knob/Lever Cylinder
Product Category:
Mechanical Locks
Product Model:
HSC425
Commercial/Residential:
Commercial
Series:
High Security
Tags:
pdq hsc425, hsc425 pdq, hsc425
Subcategory:
Cylinders, Cores and Keys

PDQ HSC425626 – Frequently Asked Questions

1) I need a high security cylinder for a mortise lock, not a knob. Is the HSC425 the right part?
No. The HSC425 is the key in knob/lever format. For a mortise case, PDQ offers the mortise/rim combo cylinder at 1-1/8 inch and mortise cylinders at 1-1/4 and 1-1/2 inch, and those take a separate high security cam to suit Adams Rite, Accentra (Yale), Russwin/PDQ, Falcon, Schlage or Sargent offset applications. If your hardware uses interchangeable cores, PDQ also makes 6-pin and 7-pin SFIC cores and an LFIC Schlage compatible 6-pin core.
2) Do I have to specify keying when I order the HSC425, and can it go on a master key system?
Keying is a required selection. Choose keyed different (KD), keyed alike (KA), or master keyed (MK, which carries a master keying charge). The HSC425 cannot be supplied 0 bitted, so there is no option to key it yourself later.
3) Can my locksmith cut extra keys for a PDQ HSC425 cylinder?
Not from a standard key wall. The HSC425 uses a proprietary PDQ keyway with a sidebar, and the blank is not a retail profile, so duplication is limited to controlled sources. PDQ does not sell key blanks for its high security cylinders. Each cylinder ships with 2 cut keys, so order the key count you need up front.
4) What is the difference between PDQ Standard High Security and High Security pinning?
Standard High Security cylinders use two hardened anti-drill pins plus the proprietary sidebar keyway. High Security cylinders and cores step up to a minimum of 11 anti-drill and stainless steel pins. Both add a sidebar as a second locking element separate from the pin stack, which a plain pin tumbler core does not have.
5) What finishes does the PDQ HSC425 cylinder come in, and will it match my existing lever finish?
Two finishes: 626 satin chrome and 605 bright brass, ordered as HSC425626 and HSC425605. Satin chrome pairs with the common 626/satin chrome lever hardware in commercial buildings; bright brass suits polished brass openings. Only the cylinder face shows once installed, so matching that face to the knob or lever is what matters.
6) Is PDQ High Security the same thing as the PDQ VAULT keying system?
No, they are separate platforms and the keys are not interchangeable. High Security, which the HSC425 belongs to, is a proprietary sidebar keyway with hardened anti-drill pins in a familiar cylinder format. VAULT is a different PDQ system built around a patented tapered gate (U.S. Patent #12338653).
7) If I order several HSC425 cylinders for one building, can they all run on one key?
Yes. Order them keyed alike (KA) and every cylinder operates from the same key, which is the usual choice for a set of doors handled by the same staff. Use keyed different (KD) where each opening needs its own key, or master keyed (MK) where you want individual change keys plus one key that opens the group.
8) Where does a high security key in knob cylinder like this actually get used?
Typical uses are server and data rooms, evidence and records storage, pharmacy or narcotics cabinets, and exterior perimeter entries. It is commercial hardware, and the draw is the drill and pick resistance plus controlled key duplication, which keeps staff from copying a key at a hardware store.
How fast can I get the PDQ HSC425626 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 PDQ HSC425626 come with a warranty?
Absolutely. The PDQ HSC425626 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 PDQ HSC425626?
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 PDQ HSC425626 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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