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PDQ X91910 Mounting Screw Pack
Replacement Parts for the PDQ SX Ball Knob Lock
PDQ part number X91910: Mounting Screw Pack. 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: X91910
Manufacturer Resources
PDQ SX Series Architectural Submittal Sheet
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:
- X91910
- Commercial/Residential:
- Commercial
- Tags:
- pdq x91910, x91910 pdq, x91910
- Subcategory:
- Parts and Accessories
- Parts and Accessories Type:
- Screw Pack or Fastener
- Series:
- SX Series
PDQ X91910 – Frequently Asked Questions
1) What lock does the PDQ X91910 screw pack fit?
The X91910 mounting screw pack is a genuine PDQ part made for the SX Series Grade 1 cylindrical ball knob lock. It is the fastener set that holds the lock chassis and roses together, so it is the part to order when screws are stripped, lost, or too short after a door refinish. It is not a universal fastener kit, and it is not intended for other PDQ series.
2) Does the PDQ X91910 come with a latch, or do I order the latchbolt separately?
Two distinct SX Series replacement items exist under the X91910 part reference: the mounting screw pack itself, and a 2-3/4 inch backset deadlocking latchbolt with a 2-1/4 x 1-1/8 inch faceplate in 630 finish. If you need both the fasteners and the latch, specify both items on the order rather than assuming the screw pack includes a latchbolt.
3) Will the PDQ SX replacement latchbolt work in a 2-3/8 inch backset door prep?
No. The SX Series deadlocking latchbolt supplied as a PDQ replacement part is a 2-3/4 inch backset latch, which is the standard commercial backset. A door bored at 2-3/8 inches will put the cross bore too close to the edge for it, so you need a latch matched to that prep instead.
4) Will the replacement SX latch fit my existing strike and faceplate cutout?
The latch faceplate measures 2-1/4 x 1-1/8 inches, which is the common commercial cylindrical lock face prep. If the existing mortise in the door edge was cut for that size face, the replacement drops in. A door prepped for a drive-in latch or a 1 x 2-1/4 inch radius face of a different size will need the edge re-prepped. The latch is deadlocking, so it carries an auxiliary plunger that must land on the strike face, not in the strike opening.
5) Can I use the PDQ X91910 screw pack to standardize spare parts across a building with PDQ ball knob locks?
Yes, if those locks are SX Series. The X91910 screw pack is series-specific to the SX cylindrical ball knob lock, so one part number covers the fasteners for every SX knob set in the facility. Pairing it with the SX 2-3/4 inch backset deadlocking latchbolt gives a facility crew the two pieces that fail or go missing most often on a cylindrical lock.
6) Is the PDQ X91910 a commercial-duty part or for residential locks?
Commercial. The X91910 is a door hardware replacement part for the PDQ SX Series, a Grade 1 cylindrical lock used in commercial openings, so it suits MRO and facility stock rather than residential knob sets.
7) What finish is the PDQ SX replacement latchbolt?
It is 630, also called US32D, satin stainless steel. That matches the most widely specified commercial finish, so the latch face will blend with existing 630 hardware on the rest of the openings in a building.
How fast can I get the PDQ X91910 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 X91910 come with a warranty?
Absolutely. The PDQ X91910 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 X91910?
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 X91910 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.