1. Introduction
This manual provides essential information for the proper use, setup, operation, and maintenance of your American Lock A1107RED Anodized Aluminum Safety Padlock. Designed for high security and durability, this padlock is ideal for lockout/tagout applications and use in harsh environments. Please read this manual thoroughly before using the product to ensure safe and effective operation.

An image showing the American Lock A1107RED padlock. It features a rectangular red anodized aluminum body with the 'AMERICAN LOCK' logo embossed on the front. A tall, U-shaped silver-colored shackle extends from the top of the body.
2. Product Features
The American Lock A1107RED padlock is engineered with robust features for reliable security:
- Durable Construction: 1-1/2 inch (38mm) wide red anodized aluminum body.
- High-Strength Shackle: 3 inch (76mm) tall, 1/4 inch (6mm) diameter chrome-plated, boron alloy shackle for superior cut resistance.
- Environmental Resistance: Anodized finish suitable for lockout/tagout in food processing facilities and corrosion-resistant for tough environments.
- High Visibility: Bright red color enhances visibility for safety applications.
- Advanced Security: Features a 5-pin tumbler rekeyable cylinder.
- Keyed Different: Each padlock in the pack is keyed differently for individual security.
- Convenient Packaging: Supplied in a pack of 24 padlocks, with 2 keys included per padlock.
3. Setup
Your American Lock A1107RED padlocks are ready for immediate use upon receipt. Follow these steps for initial setup:
- Unpack: Carefully remove the padlocks and keys from their packaging.
- Inspect: Visually inspect each padlock for any signs of damage or manufacturing defects. Do not use if damaged.
- Key Identification: Each padlock comes with two unique keys. It is recommended to label or store keys securely to match them with their respective padlocks, especially since they are keyed differently.
- Test Operation: Before deployment, insert a key into the keyway and turn to ensure the shackle opens and closes smoothly.
4. Operating Instructions
Operating the American Lock A1107RED padlock is straightforward:
To Unlock:
- Insert the correct key into the keyway at the bottom of the padlock body.
- Turn the key clockwise approximately 90 degrees.
- Pull the shackle upwards to open the padlock.
- Remove the key. The shackle will remain open until manually closed.
To Lock:
- Align the shackle with the padlock body.
- Push the shackle firmly downwards into the padlock body until it clicks into place.
- Ensure the shackle is fully seated and cannot be pulled open without the key.
5. Maintenance
Proper maintenance will extend the life and ensure the reliable operation of your padlocks:
- Cleaning: Wipe the padlock body and shackle with a clean, dry cloth periodically to remove dirt and grime. For stubborn dirt, a mild soap solution can be used, followed by thorough drying.
- Lubrication: Apply a small amount of graphite-based lubricant or a silicone-based spray specifically designed for locks into the keyway and around the shackle entry points once or twice a year, or more frequently in harsh environments. Avoid oil-based lubricants as they can attract dirt.
- Storage: Store padlocks in a dry, clean environment when not in use.
- Key Care: Keep keys clean and avoid bending or damaging them. Do not force a key into the lock if it does not insert smoothly.
6. Troubleshooting
If you encounter issues with your padlock, consider the following common solutions:
- Key Sticks or Won't Turn:
- Ensure you are using the correct key for the padlock.
- Apply a lock lubricant to the keyway and gently try to insert and turn the key.
- Check for debris in the keyway and try to clear it.
- Shackle Won't Open/Close Smoothly:
- Lubricate the shackle mechanism by applying lubricant where the shackle enters the padlock body.
- Check for any physical obstructions preventing the shackle from moving freely.
- Padlock Feels Loose/Rattles:
- This is typically not an operational issue unless it affects locking/unlocking. If performance is affected, contact support.
If problems persist after attempting these solutions, please refer to the Warranty & Support section.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Master Lock |
| Model Number | A1107 |
| Part Number | A1107RED |
| Lock Type | Key Lock |
| Body Material | Anodized Aluminum |
| Shackle Material | Chrome-plated, Boron Alloy |
| Body Width | 1-1/2 inches (38mm) |
| Shackle Clearance (Height) | 3 inches (76mm) |
| Shackle Diameter | 1/4 inch (6mm) |
| Color | Red |
| Number of Pieces | 24 (per pack) |
| Included Components | 2 keys per lock |
| Special Features | High Visibility, Corrosion Resistant, Rekeyable Cylinder |
| UPC | 071649716812 |
8. Warranty & Support
For specific warranty information and customer support regarding your American Lock A1107RED padlocks, please refer to the official Master Lock website or contact their customer service directly. Master Lock products are known for their quality and durability, and support is available for product-related inquiries.
You can visit the official Master Lock store for more information: Master Lock Store





