Both keyed padlocks and combination locks can work for school lockers, and the better choice depends on what you prefer and any school guidelines.

• Keyed locks: Simple to use and often come in keyed-alike sets, so one key can open multiple locks. You’ll need to keep the key safe.
• Combination locks: No key to carry. Options include preset codes and resettable 3–4-dial models.
• Fit and size: Standard shackle lengths fit most locker hasps; check the hole diameter and clearance.
• Visibility: Color varieties can make your locker easier to spot.

On Walmart.com, you can filter by lock type and features to narrow your choices.

Picking the right shackle length helps your locker lock stay secure without excess play.

1. Measure the hasp: Note the thickness of the latch and the hole size.
2. Check clearance: You’ll want just enough room to close and rotate the shackle—often around 1–1.5 inches for standard lockers.
3. Avoid overly long shackles: Long shackles add reach but can create more leverage points.
4. Consider shackle diameter: Make sure it fits through the hasp hole.

Product pages list shackle lengths and diameters (e.g., 1 in, 1.5 in, 2 in). Comparing those specs to your locker’s hardware can help you choose confidently.

Resetting depends on the lock design.

• Resettable dial locks: Many 3–4 dial models let you set your own code. Typically, open the lock, locate the reset lever or button (often inside the shackle opening), move it to the reset position, set your new code, then return the lever.
• Preset combination locks: Some are factory set and not resettable. Keep the provided combo in a secure place.
• Test first: Try the new combination several times before locking your locker.
• Store safely: Consider saving the code in a password manager or sealed note.

Always follow the instructions on the product page or packaging, as mechanisms vary.

Materials influence corrosion resistance and durability outdoors.

• Stainless steel: Resists rust and is common in discus-style padlocks.
• Solid brass: Naturally corrosion resistant; suitable for damp environments.
• Laminated or covered steel: Strong, and weather-resistant shells can help protect internal parts.
• Anodized aluminum or zinc alloy: Lightweight; typically better for indoor or light-duty use.

For outdoor gates or lockers near pools, look for weather-resistant features and sealed keyways. Light maintenance—like occasional dry lubricant and wiping moisture—can help extend service life. Walmart.com filters can help you find materials and shackle sizes that match your environment.

There are a few options that may help.

• Check the key code: Some keys or locks have a code; the manufacturer may offer replacements based on that.
• Spare keys: Multi-pack locks often include extras or are keyed alike—look through your purchase.
• Facility support: For school or gym lockers, contact staff for their approved process.
• Locksmith assistance: A licensed locksmith can help, typically with proof of ownership.

Avoid forcing or cutting locks without authorization. For future convenience, consider a resettable combination lock to reduce the risk of key misplacement.