Best Defender Security Door Lock Replacement Parts in 2026
Daisy
Last Updated: Jul 19, 2026
Daisy
Last Updated: Jul 19, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Pacific Doorware | 9.84 | ✅ | ✅ | ✅ |
Choose 31/32" or 1-1/8" Backset
Backset: The distance between the edge of the door and Center of the key cylinder.
Huge five-ply laminated steel bolt with concealed hardened steel pin provides maximum security
Includes Hook bolt Lock, Faceplate, 1 Thumbturn, 1 Lock Cylinder & 2 Keys
Pacific Doorware Brand with Adams Rite Style Cam
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Pacific Doorware | 9.84 | ✅ | ✅ | ✅ |
Pacific Doorware Brand Mortise Cylinders, SC1 Keys (5 Pin C keyway)
Adams Rite Style Cam
Fits Most Storefront Doors including Kawneer, Adams Rite, others
Includes 2 Lock Cylinders & 2 Keys
Standard 1-inch Length , Standard 1-5/32" Diameter
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Pacific Doorware | 9.84 | ✅ | ✅ | ✅ |
CHOOSE BACKSET & HANDING
BACKSET: The distance between the edge of the door and Center of the key cylinder.
Features "Latch hold-back function" to allow ingress during business hours. Activated simply by holding in the latchbolt and turning the key the opposite direction until it clicks.
Pacific Doorware Brand, compatible with Adams Rite and other Commercial Storefront Doors
Available in 1-1/8" or 31/32" Backset (see photos for ordering instructions)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Pacific Doorware | 9.84 | ✅ | ✅ | ✅ |
Choose backset and handing
Backset: The distance between the edge of the door and Center of the key cylinder.
Includes Deadlatch Lock, Faceplate, Paddle Handle, Strike Plate, Lock Cylinder & 2 Keys
Pacific Doorware Brand, compatible with Adams Rite and other Commercial Storefront Doors
Available in 1-1/8" or 31/32" Backset (See photos for measuring instructions)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Pacific Doorware | 9.84 | ✅ | ✅ | ✅ |
Pacific Doorware Brand , Use on models Detex EA500 , EAX-500 , EAX300 , V40 EB , EA2500 , EAX2500
Part number 102281-7 , MC65 , For Arming & Disarming Detex Exit Alarm Devices
Solid Brass Key Lock Cylinder
Includes 2 Keys (SC1)
For Detox battery powered operated surface wall or door mount exit alarms
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Pacific Doorware | 9.84 | ✅ | ✅ | ✅ |
Use on ECL models
For Arming & Disarming Battery Powered Detex Exit Alarm Devices or Outside Key
Solid Brass Key Lock Detox Cylinder
Includes 2 Keys (Schlage SC)
NOT for use with EA or EAX models
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Pacific Doorware | 6 |
We've carried out a comprehensive analysis of 578 reviews on door lock replacement parts, using our selection criteria to identify the best options in the home improvement. Our findings reveal that most customers typically select door lock replacement parts priced around $64.74, with top brands including design house, schlage lock company, kwikset, prime-line, defender security, dwell+good, andersen windows, kvosit and passdone and han&hau
Our team of expert editors reviewed these high-quality items and handpicked the top 6 door lock replacement parts for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the home improvement category. These include amazon.com, choicelly llc, dwell+good, southern supply marketplace, colden solutions, kvosit store, passdone direct, techpro equinox and jasons hall and omnipotent pocket .
We are dedicated to assisting our users in finding the right parts Products based on their needs, saving them considerable time when choosing which door lock replacement parts to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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