Best Door Lock Replacement Parts Under $50 (2026)
We ranked parts by a value score combining material quality, compatibility specs, included hardware or keys, and overall utility for common door types under $50
The Verdict
- Best Overall: A29 Heavy Duty Cast Iron Horizontal Rim Lock — Best for heavy-duty rim use: sturdy cast-iron construction and horizontal rim design for solid exterior or interior replacement needs
- Best Value: RiKey Security 4x Tubular Lock Cylinders with 12 Keys, keyed alike — Best for keyed-alike storage: four tubular cylinders with 12 matching keys simplify access across multiple units
Top Picks
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1
Best Overall A29 Heavy Duty Cast Iron Horizontal Rim Lock
Best for heavy-duty rim use: sturdy cast-iron construction and horizontal rim design for solid exterior or interior replacement needs
A heavy-duty cast iron rim lock with a black powder-coated finish. Provides a historic look and is easily reversible for door handedness. Customers note good fit and value, with some latch quality concerns
- cast iron durability
- black powder coat finish
- handmade, authentic look
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2
A29 Heavy Duty Rim Lock - Backset 2 3/8 in, Cast Iron, Black
Best for reversible mounting: cast-iron rim lock with 2 3/8" backset and reversible handing for flexible installation
A29 vertical rim lock set in heavy-duty cast iron with a black powder-coated finish. Easy reversible for right or left doors; durability and vintage look noted. Customer insight: fits handmade doors and offers good value
- heavy-duty cast iron
- black powder coat finish
- easy reversible for handedness
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3
Best Value RiKey Security 4x Tubular Lock Cylinders with 12 Keys, keyed alike
Best for keyed-alike storage: four tubular cylinders with 12 matching keys simplify access across multiple units
Tubular lock cylinders with self-locking tech. Includes 4 cylinders and 12 matching tubular keys. Customers note quality and good fit for storage units
- tubular lock with self-locking feature
- keyed-alike, 4 cylinders with 12 keys
- compatible with storage units and roll-up doors
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4
AST double door security lockout device for french doors
Best for French door lockdowns: double-door lockout device fits knobsets to secure paired doors without drilling mortises
Sturdy double door lockout device made of diecast aluminum with a unibody design and 3 keys included. Provides extra security for knobset and handleset; easy to install. Customers say it’s effective for French doors and double doors, though some note lockability can be challenging
- diecast aluminum alloy build
- includes 3 keys
- adjustable to fit multiple door types
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5
Alsecure Mortise Door Lock for aluminum storefronts 1-1/8 backset
Best for aluminum storefronts: mortise lock sized for a 1-1/8" backset built to work with commercial aluminum frames
Mortise door lock cylinder for storefront/aluminum doors. Solid brass cylinder offers reliability and durability; easy to install and fits well, based on customer feedback
- solid brass cylinder
- rust-proof and durable
- designed for commercial storefront doors
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6
RiKey 5x Storage Cylinder Locks (Keyed Alike) with 3 Tubular Keys, 19mm
Best for small storage fleets: five tubular storage cylinders keyed alike provide consistent access control across units
Tubular lock set with 5 cylinders and 15 tubular keys. Self-locking technology allows locking with or without keys. Customers note good quality and a perfect fit for storage units
- 5 cylinders keyed alike
- 3 tubular keys per cylinder set
- self-locking technology
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7
(5 Sets) RKK Door Lock Installation Kit
Best for installers: five-piece installation kit includes hole saws and guides to speed accurate door lock fitment
5-set door lock installation kit with adjustable guides and hole saws for wooden doors; includes arbors and drill bits for installation. Helps with precise alignment and ease of use, though some users report fragility and alignment issues
- includes adjustable guide templates
- two hole saw sizes (54mm and 25mm)
- carbon steel construction
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8
Electric Magnetic Lock 280KG 12V NC Fail-Safe
Best for electrified entries: 280kg hold magnetic lock with 12V fail-safe operation for controlled egress setups
Electric magnetic lock with 280kg holding force for access control. NC mode: locked during power, unlocked when power off. Customer note highlights strong magnet and easy installation
- 280kg holding strength
- 12V DC operation
- NC fail-safe mode
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9
US storm door mortise lock body replacement
Best for storm-door repair: mortise lock body designed to replace common storm-door hardware with matching spindle hub
Storm door mortise lock with flat slot compatible with 4-sided spindle. Includes 7" faceplate, 2-1/2" handle PZ, 7/8" backset, non-handed body. Customer insight notes mixed fit and handle size reports, with good quality and easy installation
- 2-1/2" handle PZ measurement
- 7" faceplate with screw holes
- 7/8" backset for alignment
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10
Storefront door lock with mortise cylinder & hook deadbolt
Best for commercial storefront security: mortise lock with integrated mortise cylinder and hook deadbolt for stronger latching
Aisecure commercial mortise lock for aluminum storefront doors with a hook deadbolt and cylinder combo. Durable construction with brass cylinder noted for reliability; mixed feedback on installation and key quality
- brass cylinder for rust-proof reliability
- mortise mechanism for storefront security
- suitable for aluminum doors