Skip to main content
HalloweenPetLawn & GardenTruck & AutomotiveSporting GoodsHorseFarm & RanchClothingLivestockPet & Animal PharmacyToolsPoultryFencing & GatesHome ImprovementOutdoor LivingHeating & CoolingHome Decor & FurnitureOutdoor Power EquipmentTrailers & TowingBoots & ShoesWild Birds & WildlifeToysGift CardsServices Propane RefillTrailer RentalGarden CenterFeed CenterSame Day DeliveryPetVet ClinicPet WashGrooming at PetsenseDog Training at PetsenseTractor Supply RxPet InsuranceWag!

"Savings and Offers"

Weekly AdSaleClearance

"More Options"

Weekly AdWhat's NewTractor Supply AppEarn Rewards with Neighbor's ClubHometown HeroesLife Out Here BlogTSC Exclusive BrandsTop BrandsClearance ItemsBattery FinderOutdoor Power Equipment Parts FinderHitch Finder

Spend $49.99 to unlock Free Delivery on most orders

|
Learn More
Order statusTSC Credit CardsWhat’s newPetsenseWeekly Ad
​
Sign In / EnrollGet rewarded!
​
Halloween
Pet
Lawn & Garden
Truck & Automotive
Sporting Goods
Horse
Farm & Ranch
Clothing
Livestock
Pet & Animal Pharmacy
Tools
Poultry
Fencing & Gates
Home Improvement
Outdoor Living
Heating & Cooling
Menu

Search

Home

Sign In

Cart
0.0
(0)
0.0 out of 5 stars.
A woman outside with a dog
A woman outside with a dog
  1. Home
  2. /
  3. Home Improvement
  4. /
  5. Hardware
  6. /
  7. Doors & Door Hardware
  8. /
  9. Door Knobs
  10. /

  11. Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552

  1. Home
  2. /
  4. /
  5. Door Knobs

Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552

Shop all Prime-Line
Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552

Item # 210096399

Prime-Line Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552
Prime-Line Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552
$34.99

Spend $49.99 to unlock free delivery!

Notice:
This Item cannot be shipped to AK, HI.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Shop all Prime-Line
Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552

Item # 210096399

Prime-Line Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552
Prime-Line Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9552

$34.99

Spend $49.99 to unlock free delivery!

This item is available online only

Delivery to

Free standard delivery on online footwear & Clothing purchases of $49 and over.

​
Notice:
This Item cannot be shipped to AK, HI.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Defender Security U 9552 Stainless Steel Lock and Door Reinforcer assists in preventing forced entry by reinforcing the weak spot of an entry door. It can be used to reinforce and repair both metal and wood doors. Made of stainless steel construction, the lock reinforcer plate comes finished in stainless steel. All the necessary mounting hardware is included for a quick and easy installation. The lock reinforcement plate is pre-punched for mounting. The reinforcer is designed for 1-3/4 inch thick doors that have mortise or drive-in latches. It features one 2-1/8 inch bore with a 3-5/8 inch on center, with a 2-3/8 inch backset. The door reinforcer is recessed. Please refer to the line art drawing for dimensions and compare to your needs before purchasing (Not Universal).

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

  • ADDED SECURITY Prevent forced entry by reinforcing the weak spot of an entry door with the recessed door lock reinforcer; use to reinforce and repair both metal and wood doors
  • BUILT TO LAST Made of stainless steel construction, the door lock reinforcement plate comes in a stainless steel finish to fit over one bore hole on your door
  • EASY INSTALLATION All the necessary mounting hardware is included with the lock reinforcement plate for a quick and easy installation; the door reinforcer plate is pre-punched for mounting
  • DIMENSIONS The door lock reinforcement plate is designed for 1-3/4 inch thick doors; it features one 2-1/8 inch bore with a 2-3/8 inch backset
  • NOTE - Please refer to the line art drawing for dimensions and compare to your needs before purchasing (Not Universal)
BrandPrime-Line
Country of OriginImported
ANSI Security GradeNo grade
Door HandingReversible
FeaturesNone
FinishStainless-steel
Indoor/OutdoorIndoor and Outdoor
Knob Bore Hole Diameter2.125 in.
Knob Cross Bore Diameter0 in.
Knob Diameter0 in.
Knob Housing Height0 in.
Knob Housing Width0 in.
Knob Strike Height0 in.
Knob Strike StyleOther
Knob Strike Width0 in.
Knob Throw Length0 in.
Knob TypeKnob Only
Knob UsageEntry Door Knob
Maximum Door Thickness1.75 in.
Minimum Door Thickness1.75 in.
Number of Keys Included0
Number Of Pins0
Package Quantity1
Primary ColorGray
Primary MaterialStainless Steel
Product Height9 in.
Product Length9 in.
Product Weight0.85 lb.
Product Width1.75 in.
Projection0.625 in.
Warranty1 year limited
Manufacturer Part NumberU 9552
No questions have been asked about this product.

No questions have been asked about this product.

Q&As

No questions have been asked about this product.

No questions have been asked about this product.

Similar Items

  1. Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9553
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9553

    $29.99
  2. Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9554
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9554

    $24.99
  3. Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9588
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9588

    $19.99
  4. Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9492
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/4in. Thick Doors, Stainless Steel Finish (Single pk.), U 9492

    $18.99
  5. Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/8in. Thick Doors, Stainless Steel Finish (Single pk.), U 9589
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stainless Steel Lock & Door Reinforcement Plate for 1-3/8in. Thick Doors, Stainless Steel Finish (Single pk.), U 9589

    $19.99
  6. Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Brass Finish (Single Pack), U 9559
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Brass Finish (Single Pack), U 9559

    $24.99
  7. Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Brass Finish (Single Pack), U 9569
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Brass Finish (Single Pack), U 9569

    $39.99
  8. Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Brass Finish (Single Pack), U 9537
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Brass Finish (Single Pack), U 9537

    $39.99
  9. Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Antique Brass Finish (Single Pack), U 9572
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Antique Brass Finish (Single Pack), U 9572

    $24.99
  10. Prime-Line Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel (Single Pack), U 10546
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel (Single Pack), U 10546

    $24.99
  11. Prime-Line Stainless Steel Lock & Door Reinforcer, 1-3/4 x 4-1/2 In., 2-1/8 In. Single Bore, 2-3/4 In. Backset, (Single), U 9592
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stainless Steel Lock & Door Reinforcer, 1-3/4 x 4-1/2 In., 2-1/8 In. Single Bore, 2-3/4 In. Backset, (Single), U 9592

    $29.99
  12. Prime-Line 1/2 in. Thick Door Sliding Screen Door Handle, for Columbia Series Doors, A 218
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line 1/2 in. Thick Door Sliding Screen Door Handle, for Columbia Series Doors, A 218

    $11.69
    Was $12.99Save $1.30

Items You May Like

  1. Prime-Line Door Hole Cover Plate, 2-5/8 in. Diameter, Brass Plated, U 9516
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Door Hole Cover Plate, 2-5/8 in. Diameter, Brass Plated, U 9516

    $7.99
  2. Prime-Line 4 x 16 in. Stainless Steel Round Handle Door Pull Plate, J 4643
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line 4 x 16 in. Stainless Steel Round Handle Door Pull Plate, J 4643

    $44.99
  3. Top Rated
    Prime-Line Diecast Sliding Door Handle Set, White (1 Set)
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Prime-Line Diecast Sliding Door Handle Set, White (1 Set)

    $34.99
  4. Prime-Line 3-1/2 in. Replacement Spindle, 10 pk., E 2434
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line 3-1/2 in. Replacement Spindle, 10 pk., E 2434

    $14.99
  5. Prime-Line Brass Plated Bore Adaptor Ring Set (1 Set), U 9529
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Brass Plated Bore Adaptor Ring Set (1 Set), U 9529

    $8.99
  6. Prime-Line 3 in. Solid Brass Floor Door Stop
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line 3 in. Solid Brass Floor Door Stop

    $24.99
  7. Prime-Line Diecast Bronze Finish Drop Down Door Holder, U 9152
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Diecast Bronze Finish Drop Down Door Holder, U 9152

    $10.99
  8. Prime-Line Black Plastic Sliding Screen Door Handle
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Black Plastic Sliding Screen Door Handle

    $9.89
    Was $10.99Save $1.10
  9. Prime-Line White Painted Spindle Knob, 1 Set, E 2319
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line White Painted Spindle Knob, 1 Set, E 2319

    $11.69
    Was $12.99Save $1.30
  10. Prime-Line 3-1/2 in. Antique Brass Plated Back Plate, U 9498
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line 3-1/2 in. Antique Brass Plated Back Plate, U 9498

    $8.99
  11. Prime-Line 0.185 in. x 25 ft. Roll Black Vinyl Screen Spline, P 7940
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line 0.185 in. x 25 ft. Roll Black Vinyl Screen Spline, P 7940

    $7.99
  12. Prime-Line Stone Sliding Screen Door Pull, Fits Andersen Doors, A 209
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Stone Sliding Screen Door Pull, Fits Andersen Doors, A 209

    $18.99

Customers Also Bought

  1. E-Z LOK Thread Repair Kit for Metal - Thin Wall - Stainless Steel - 7/16-14 x 9/16-18
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    E-Z LOK Thread Repair Kit for Metal - Thin Wall - Stainless Steel - 7/16-14 x 9/16-18

    $159.99
  2. E-Z LOK Thread Repair Kit for Metal - Standard - 9/16-12 x 2D
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    E-Z LOK Thread Repair Kit for Metal - Standard - 9/16-12 x 2D
  3. E-Z LOK Thread Repair Kit for Metal - Standard - M10-1.5 x 1.5D
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    E-Z LOK Thread Repair Kit for Metal - Standard - M10-1.5 x 1.5D

    $44.99
    Was $49.99Save $5.00
  4. E-Z LOK Thread Repair Kit for Metal - Economy - M12-1.5 x 1D
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    E-Z LOK Thread Repair Kit for Metal - Economy - M12-1.5 x 1D

    $39.99
  5. E-Z LOK Thread Repair Kit for Metal - Economy - 1-12 x 1.5D
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    E-Z LOK Thread Repair Kit for Metal - Economy - 1-12 x 1.5D

    $134.99
    Was $149.99Save $15.00
  6. Top Rated
    Hillman 60 lb. All Purpose Hooks, Black Vinyl, 1 pk.
    5.0 out of 5 stars with 2 reviews
    5.0 (2)

    Hillman 60 lb. All Purpose Hooks, Black Vinyl, 1 pk.

    $4.29
  7. Tie Down 7/16 in.-14 1-9/16 in. 3-9/16 in. Galvanized Square U-Bolt Kit
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Tie Down 7/16 in.-14 1-9/16 in. 3-9/16 in. Galvanized Square U-Bolt Kit

    $7.99
  8. Hillman #10 24 x 3/4in. Zinc Thumb Screws, 2 pk.
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman #10 24 x 3/4in. Zinc Thumb Screws, 2 pk.

    $2.09
  9. E-Z LOK Thread Repair Kit for Metal - Economy - 10-24x1.5D
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    E-Z LOK Thread Repair Kit for Metal - Economy - 10-24x1.5D

    $22.49
    Was $24.99Save $2.50
  10. Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Bronze Finish (Single Pack), U 10745
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Prime-Line Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Bronze Finish (Single Pack), U 10745

    $24.99
  11. Grip Tight Tools Stainless Steel Entry Door Knob Combo Lock Set with Deadbolt and 6 SC1 Keys- Boxed Keyed Alike
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Grip Tight Tools Stainless Steel Entry Door Knob Combo Lock Set with Deadbolt and 6 SC1 Keys- Boxed Keyed Alike

    $27.99
  12. Grip Tight Tools Stainless Steel Entry Lock Set Door Knob & Deadbolt with 18 SC1 Keys, 3 pk., Keyed Alike
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Grip Tight Tools Stainless Steel Entry Lock Set Door Knob & Deadbolt with 18 SC1 Keys, 3 pk., Keyed Alike

    $82.99

Reviews

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Be the first to review this product
Get the top deals, latest trends and more
Sign up for emails from Tractor Supply today.
First Name*
Last Name*
Email*

Customer Support

  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  

    (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

About Us

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

Work With Us

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

Neighbor's Club

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

Credit Center

  • TSC Credit Card

  • Klarna

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More
  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

  • TSC Credit Card

  • Klarna

Connect & Share with the Tractor Supply Community.

Shop on the go with the Tractor Supply App

Learn More
  • Privacy policy
  • Your Privacy Choices
  • Terms and Conditions
  • California Transparency Act
  • Legal Notices
  • Accessibility
  • Responsible Disclosure Statement
  • Surprise (Balance) Medical Billing Disclosure
  • Transparency in Coverage
  • Human Rights Policy
  • Vendor Code of Conduct
  • California Notice of Collection
  • Privacy Requests

© 2026, Tractor Supply Co. All Rights Reserved.