PDQ I04521-1 Latchbolt, 2-3/4"...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$88.06
PDQ I04521-1 Latchbolt, 2-3/4" Backset, Deadlocking, 2-1/4" x 1-1/8" Faceplate, 630

PDQ I04521-1 Latchbolt, 2-3/4" Backset, Deadlocking, 2-1/4" x 1-1/8" Faceplate, 630

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Model: I045211

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

$88.06
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PDQ I04521-1 Latchbolt, 2-3/4" Backset, Deadlocking, 2-1/4" x 1-1/8" Faceplate, 630

Replacement Parts for the PDQ SX Ball Knob Lock

PDQ part number I04521-1: Latchbolt, 2-3/4" Backset, Deadlocking, 2-1/4" x 1-1/8" Faceplate, 630. A genuine PDQ part.

These are PDQ replacement parts specific to the SX Series Grade 1 cylindrical ball knob lock: a mounting screw pack and a 2-3/4" backset deadlocking latchbolt with a 2-1/4" x 1-1/8" faceplate in 630 finish.

Key Features

  • Made for the PDQ SX Series cylindrical ball knob lock
  • Mounting screw pack for the SX lock
  • 2-3/4" backset deadlocking latchbolt with a 2-1/4" x 1-1/8" faceplate
  • 630 (US32D) finish on the latchbolt

Technical Specifications

  • Finish: 630 (US32D)
  • Manufacturer Part Number: I04521-1

Product Specs

Department:
Door Hardware
Product Group:
Parts and Accessories
Product Subgroup:
Replacement Parts
Product Type:
Replacement Part
Product Category:
Parts and Accessories
Product Model:
I04521-1
Commercial/Residential:
Commercial
Tags:
pdq i04521-1, i04521-1 pdq, i04521-1
Subcategory:
Parts and Accessories
Parts and Accessories Type:
Latch or Bolt
Series:
SX Series

PDQ I045211 – Frequently Asked Questions

1) What backset does the PDQ I04521-1 latchbolt fit?
The I04521-1 is a 2-3/4 inch backset latch, which is the standard commercial backset for cylindrical locks. If your door is bored at 2-3/8 inches (common on lighter interior and residential-prep doors), this latch will not reach the lock chassis and you need the 2-3/8 inch version instead.
2) Will the PDQ I04521-1 latch fit my existing door edge prep?
The faceplate measures 2-1/4 x 1-1/8 inches, which is the standard square-corner cylindrical latch face. If the door edge is already mortised for a 2-1/4 x 1-1/8 face, it drops in without rework. Doors prepped for a 1 inch round-corner or drive-in latch front will need the mortise reworked or a different latch front.
3) What is a deadlocking latchbolt and why does it matter on an exterior door?
A deadlocking latch carries an auxiliary deadlatch plunger alongside the main bolt. When the door closes, the plunger hits the strike and blocks the latchbolt from being pushed back, so it cannot be shimmed or carded open. The I04521-1 is a deadlocking latch, which is what you want on any opening with exterior or corridor exposure rather than a plain spring latch.
4) Is the 630 finish on this PDQ latch the same as US32D?
Yes, 630 and US32D are the same designation, satin stainless steel. The I04521-1 latch is finished 630 (US32D), so the exposed faceplate will match satin stainless or 630 knobs, strikes and hinges on the rest of the opening. Against a 626 satin chrome trim set it reads slightly different in tone, though both are brushed and most property managers accept the mix on a door edge.
5) Do I need to order a strike separately when replacing this PDQ latch?
The I04521-1 is the latch assembly only. It does not include a strike plate, and the mounting screw pack for the SX lock is a separate PDQ part. If the existing strike is intact and aligned, you can reuse it; if you are changing the latch front size or shifting the opening, order a strike as well.
6) Is this PDQ latchbolt handed?
No handing to specify. Cylindrical latches of this type are non-handed, and the I04521-1 is ordered as a single part number with no left or right option, so one part covers both swings.
7) Is the PDQ I04521-1 latch suitable for commercial traffic?
It is classed as commercial door hardware and it is the service latch for the SX Series Grade 1 cylindrical lock, so it is built for commercial openings such as multi-family corridors, schools and offices rather than light residential duty.
How fast can I get the PDQ I045211 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 I045211 come with a warranty?
Absolutely. The PDQ I045211 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 I045211?
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 I045211 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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