How to Use This Guide
Most people searching for cabinet locks need one of two things: child safety or general security. The hardware is different, the installation is different, and the biggest mistake is buying the wrong type for your cabinet style.
If you're childproofing kitchen cabinets: Start with Part 1 (which lock type), then jump to Part 4 (magnetic lock install).
If you're adding security to a workshop or tool cabinet: Part 1 covers your options, Part 3 covers cam lock installation.
If something went wrong with an install: Go to Part 5 (troubleshooting).
Locks for Cabinets at a Glance
For most kitchen cabinets with kids in the house, a screw-mount magnetic child safety lock is the right answer. It's invisible from outside, requires only a magnetic wand to open, and works on almost any door thickness. For tool storage and workshop cabinets, a cam lock is the standard: a $10-$15 lock, a 3/4" bore hole, and 10 minutes of work.
Before you buy anything, figure out whether your cabinets are face-frame or frameless. That single variable determines which products will actually work.
| Most common cam lock bore size | 3/4" (19mm) |
| Cylinder length for standard 3/4" doors | 1-1/8" (Prime-Line U9945) |
| Best child safety lock, permanent install | Rev-A-Lock RAL-101-1 (~$11/lock in kit) |
| No-drill child safety option | Adhesive magnetic (~$3–$6/lock) |
| Adhesive magnetic locks on frameless cabinets | Will not work |
| Professional install cost | $45–$150 |
In this guide:
- Which lock fits your situation and what each type costs
- Face-frame vs. frameless cabinets: the variable that matters most
- How to install a cam lock
- How to install a magnetic child safety lock
- What to do when something goes wrong
Part 1: Which Lock Type Fits Your Situation
Seven lock types serve different cabinet security needs. Pick your scenario from the table below, then check the cost breakdown.
| Your situation | Best lock type | Why |
|---|---|---|
| Childproofing kitchen cabinets, renting or temporary | Adhesive magnetic child safety lock | No drilling, invisible, face-frame cabinets only |
| Childproofing kitchen cabinets, permanent install | Screw-mount magnetic child safety lock | More secure than adhesive; works on frameless too |
| Childproofing frameless (Euro-style) cabinets | Screw-mount magnetic or RFID lock | Adhesive versions won't work on frameless |
| Medications, liquor, or other adult-proof storage | Keyed cam lock or pin tumbler cylinder | Key control; not just child-resistant |
| Tool storage or workshop drawers | Cam lock or hasp + padlock | Durable; keyed-alike options for multiple drawers |
| Office documents or filing cabinets | Keyed-alike cam locks | One key opens all drawers |
| Modern cabinetry, keyless access | RFID or smart lock | Hidden inside cabinet; no key to manage |
What each type costs
| Lock type | Cost per lock | Notes |
|---|---|---|
| Strap or cord lock | $2–$4 | Zero install; visible; often removed and forgotten |
| Spring-action safety latch | $2–$3 | No key; defeated by kids 3+ |
| Adhesive magnetic child safety | $3–$6 | No drill; face-frame cabinets only |
| Cam lock, budget (Prime-Line U9943) | $7–$9 | For panels thinner than 3/4" |
| Cam lock, standard (Prime-Line U9945) | $10–$15 | The right choice for standard 3/4" doors |
| Screw-mount magnetic (Rev-A-Lock RAL-101-1) | ~$11 per lock | Sold in 5-lock kits; lifetime warranty |
| Pin tumbler cylinder (CompX National C8173) | $20–$40 | Available keyed-alike; genuine adult-proof |
| RFID hidden lock (WOOCH) | $24–$35 | Reads through up to 1.5" of wood |
| Hasp + padlock | $10–$30 total | Workshop/shed use |
Full-kitchen estimates (DIY)
- 10 cabinets, adhesive magnetic locks: $30–$60 (two 12-packs)
- 10 cabinets, screw-mount magnetic (Rev-A-Lock): ~$110 (two 5-lock kits)
- 4 workshop drawers, cam locks: $40–$60
If you hire a locksmith, Yelp's cabinet lock service pricing data puts the typical range at $45–$150, with a minimum service fee of $50–$100 regardless of job size.
One thing push-to-open latches cannot do
Touch latches and push-to-open catches keep doors closed without visible hardware. They're a design choice, not a security device. They have no locking mechanism and can be pulled open by any curious kid or adult.
Part 2: Face-Frame vs. Frameless and Why It Determines Your Lock Choice
Most cabinet lock mistakes trace back to not knowing whether your cabinets are face-frame or frameless. Buy the wrong type for your cabinet style and the lock won't work.
How to tell which type you have: Open a cabinet and look at the inside perimeter of the door opening. Face-frame cabinets show a solid wood border (typically 1-1/2" wide) around the opening. Frameless cabinets have no such border. The opening runs flush to the interior box sides.
About 90% of US kitchen cabinets use face-frame construction. If yours were installed before 2010, they're almost certainly face-frame.
Face-frame cabinets
A solid wood frame is glued to the front of the cabinet box. Install a cam lock and turn the key: the cam arm swings out and catches the back edge of that face frame. No additional hardware needed.
Both adhesive magnetic locks and screw-mount magnetic locks work on face-frame cabinets.
Frameless (Euro-style) cabinets
No face frame. Doors and drawers mount directly to the box sides. A cam lock installed in the door will rotate freely. There's nothing for the cam to catch.
Two solutions:
- Strike plate: Screw a metal strike plate to the interior side panel at the cam's swing radius. This is the cleaner approach.
- Backing block: Glue or screw a small wood block to the cabinet interior at the cam's contact point. The cam catches the block.
Adhesive magnetic locks won't work on frameless cabinets. Per Qdos Safety's installation notes, these locks are designed for face-frame construction and will not fit frameless or Euro-style cabinets. For frameless cabinets, use screw-mount magnetic locks or an RFID lock.
Part 3: How to Install a Cam Lock
Cam locks are the standard for tool storage, workshop cabinets, filing cabinets, and any situation where security matters more than invisibility.
Buy the right lock for your door thickness
For a standard 3/4" (19mm) plywood or MDF cabinet door, buy the Prime-Line U9945: 3/4" bore, 1-1/8" cylinder. That cylinder length leaves enough thread exposed inside the door for the retaining nut to seat properly.
If your door is thinner than 3/4" (like a 1/2" drawer face), the U9943 with its 7/8" cylinder is the correct match.
Per CNCLATHING's cam lock sizing guide, cylinder length should exceed panel thickness by about 1/4". If you're not sure, bring a door sample to the hardware store.
Tools you need
- Drill with a 3/4" (19mm) forstner bit or step bit
- Adjustable wrench
- Tape measure and pencil
- Center punch (optional, but prevents the bit from walking)
Before you drill: 30 seconds that prevent a permanent mistake
Close the door. Measure the gap between your door edge and the face frame. Then measure the cam arm length on your specific lock (from the cylinder center to the cam tip). That reach needs to exceed the gap. If it doesn't, the cam will rotate freely without catching.
Reversing a misplaced bore hole takes much longer than measuring twice.
Installation steps
Per SureLockKey's cam lock installation guide:
- Mark the hole center. Common positions: 1" from door edge for drawer fronts, 2"-3" from the top or bottom corner for door handles.
- Punch the center with a punch or nail tip to give the bit a starting point.
- Drill the bore hole at 3/4" (19mm), perpendicular to the door face. Deburr the edges so the lock body seats cleanly.
- Slide the lock body through the hole from the front. The head should sit flush with the door face.
- Thread the retaining nut from inside. Hand-tight, plus a quarter turn. Stop there. Diecast bodies crack when overtightened.
- Attach the cam. In the unlocked position, the cam should point toward the door edge (or straight down). In the locked position, it swings into the frame.
- Close the door and test. Turn the key, watch the cam swing, tug the door.
Three mistakes to avoid
Wrong bore size. Check the spec sheet before drilling. The lock body diameter is stamped on the packaging. A hole that's 1mm too large lets the cylinder wobble. A hole that's too small requires force and can split the door panel.
Cylinder too short. If the cylinder doesn't extend past the panel by at least 1/4", the retaining nut can't grip properly. The lock will feel solid at first and work loose over time.
Overtightening the retaining nut. Cam lock bodies are diecast metal. They look solid but will crack. Hand-tight plus a quarter turn is the spec. Use an adjustable wrench, not a socket gun.
Part 4: How to Install a Magnetic Child Safety Lock
Magnetic child safety locks are invisible from outside the cabinet. The lock body mounts inside; a magnetic wand passes through the door face to disengage the latch. One wand disengages every lock in the house. Keep it on top of the refrigerator or in a high drawer, out of children's reach.
Two versions exist: screw-mount and adhesive.
Screw-mount: Rev-A-Lock RAL-101-1 (recommended)
The Rev-A-Shelf Rev-A-Lock RAL-101-1 works on both face-frame and frameless cabinets, fits doors from 1/2" to 1-9/16" thick, and carries a lifetime warranty. The 5-lock kit runs about $56 at Home Depot.
Tools: Drill with 1/8" bit, screwdriver.
- Dry-fit the lock body in position (don't attach anything yet). Close the door and test magnetic key engagement through the door. The wand should click the latch from outside at a comfortable position.
- Mark the screw holes. Drill 1/8" pilots.
- Screw the lock body in.
- Apply the included exterior position sticker to the door face, directly over the lock. Without it, you'll spend a few seconds hunting each time and the key will eventually scratch the door.
- Test 10 times.
Adhesive (Jambini, Safety 1st — for renters or face-frame only)
No tools required. Adhesive locks only work on face-frame cabinets, and they fail on rough, waxed, or poorly cleaned surfaces.
- Dry-fit first. Hold the lock body in position without removing the adhesive backing. Close the door and confirm the magnetic key engages from outside.
- Clean the mounting surface with isopropyl alcohol. Let it dry completely. Skip this step and the lock will peel off within a week. Any oil, wax, or dust breaks the adhesive bond.
- Remove the adhesive backing. Press the lock body firmly against the cleaned surface for 30 seconds.
- Allow 24 hours to cure before regular use.
- Apply the position sticker to the exterior door face.
- Test 10 times.
Per Qdos Safety's installation notes, adhesive versions will not work on frameless (Euro) cabinets. If you have frameless cabinets, buy the screw-mount version.
Part 5: Troubleshooting Cabinet Locks
Most cabinet lock problems have a specific cause with a specific fix. The table covers the most common ones.
| Problem | Most likely cause | Fix |
|---|---|---|
| Key turns but door doesn't stay shut | Cam not reaching the frame | Add a strike plate or wood backing block at the cam contact point |
| Key is stiff or hard to turn | Strike plate misaligned by 1-2mm | Loosen strike plate screws, shift position, retighten; use lipstick transfer to find exact location |
| Lock body wobbles in the door | Bore hole slightly oversized | Add a thin bead of epoxy around the cylinder body; re-seat before it cures |
| Adhesive lock fell off the cabinet | Surface not cleaned before install, or rough/waxed paint | Remove, clean with isopropyl alcohol, reapply; allow full 24-hour cure |
| Magnetic wand not disengaging the latch | Holding key in wrong position | Apply the included position sticker to the door exterior and use it every time |
| Child opened the cabinet anyway | Spring latch defeated; no key required | Upgrade to a magnetic lock with a key wand |
| Cam turns freely with no resistance | Frameless cabinet: cam has nothing to catch | Install a strike plate on the cabinet interior side panel at the cam's swing radius |
The lipstick transfer method for strike plate placement
For a frameless cam lock or any misaligned deadbolt, use the lipstick transfer method to find the exact strike plate position:
- Apply lipstick, chalk, or crayon to the cam tip or bolt face.
- Close the door and turn the key to the locked position.
- Open the door. The transfer mark on the cabinet interior shows exactly where the hardware makes contact.
- Position the strike plate centered over that mark. Drill pilot holes. Screw in.
Per izonzen's alignment guide, even 2mm of misalignment causes noticeable binding. The transfer method takes 60 seconds and eliminates guesswork.
Sources
Research for this guide drew on manufacturer specifications, hardware retailer product pages, and professional locksmith installation resources.
- Yelp — cabinet lock service costs — professional installation pricing data
- Qdos Safety — adhesive magnetic locks — installation notes including frameless cabinet incompatibility warning
- Prime-Line U9945 at Home Depot — cam lock product specs and pricing
- CNCLATHING cam lock sizing guide — cylinder lengths, bore hole diameters, and panel thickness table
- SureLockKey — cam lock installation — step-by-step installation process from a professional locksmith
- Rev-A-Lock RAL-101-1 at Home Depot — screw-mount magnetic lock specs, door thickness range, warranty
- izonzen — cabinet lock alignment — lipstick transfer method and strike plate alignment technique