1. Introduction
This manual provides instructions for the proper use, care, and maintenance of your STANLEY 66-160 100 Plus Standard Slotted Tip Screwdriver. Please read this manual thoroughly before using the tool to ensure safe and effective operation.

Image 1: The STANLEY 66-160 100 Plus Standard Slotted Tip Screwdriver, featuring its black and yellow handle and metal shaft.
2. Product Features
The STANLEY 66-160 screwdriver is designed for durability and efficient performance. Key features include:
- Full Size Handles: Ergonomically designed for comfortable grip and maximum torque.
- Alloy Steel Blade: Provides strength and resistance to bending.
- Precision Ground Tip: Ensures a secure fit into screw heads, reducing cam-out.
- Chrome Plated for Corrosion Resistance: Protects the blade from rust and wear, extending tool life.
3. Setup and Safety
Before using the screwdriver, ensure the following:
- Inspection: Visually inspect the screwdriver for any signs of damage, such as a bent shaft or worn tip. Do not use damaged tools.
- Tip Selection: Always select the correct size and type of screwdriver tip (slotted in this case) that precisely fits the screw head. An ill-fitting tip can damage the screw head or the tool.
- Work Area: Ensure your work area is well-lit and stable.
- Personal Protective Equipment: Consider wearing safety glasses to protect against flying debris, especially when working with old or stubborn screws.
4. Operating Instructions
Follow these steps for effective use of your STANLEY slotted tip screwdriver:
- Positioning: Place the tip of the screwdriver into the slot of the screw head. Ensure the tip is fully seated and aligned with the slot.
- Apply Pressure: Apply firm, downward pressure on the handle to keep the tip engaged with the screw head. This prevents the tip from slipping out (cam-out).
- Turning: Rotate the handle clockwise to tighten the screw or counter-clockwise to loosen it. Maintain consistent downward pressure throughout the turning motion.
- Avoid Over-tightening: Tighten screws until snug. Over-tightening can strip the screw head, damage the material, or break the screw.

Image 2: A close-up view of the screwdriver's handle, clearly showing the 'STANLEY 100 PLUS' branding.
5. Maintenance
Proper maintenance will extend the life and performance of your screwdriver:
- Cleaning: Wipe the screwdriver clean after each use to remove dirt, grease, or debris. A damp cloth can be used, followed by drying thoroughly.
- Storage: Store the screwdriver in a dry place to prevent rust, especially on the chrome-plated blade. Keep it away from corrosive chemicals.
- Inspection: Periodically inspect the tip for wear. A worn or rounded tip can reduce grip and increase the risk of cam-out.
6. Troubleshooting
Most issues with a screwdriver are related to improper use or selection. Consider the following:
- Screwdriver tip slips out of screw head:
- Ensure the tip size matches the screw slot precisely.
- Apply more downward pressure while turning.
- The screw head may be stripped; consider using a screw extractor.
- Screw is too tight to turn:
- Ensure you are turning in the correct direction (counter-clockwise for loosening).
- Apply penetrating oil to rusted screws.
- Consider using a larger handle screwdriver or a different tool if excessive force is required.
7. Specifications
| Model Number | 66-160 |
| Brand | STANLEY |
| Head Style | Slotted (Flat) |
| Head Size | 3/8 Inch |
| Blade Material | Alloy Steel |
| Blade Coating | Chrome Plated |
| Handle Material | Metal with ergonomic grip |
| Color | Black/Silver |
| Item Dimensions (L x W x H) | 15.5 x 1.2 x 1.2 inches |
| Item Weight | 9.4 ounces |
| UPC | 076174661606 |
8. Warranty Information
Limited Lifetime Warranty: Stanley warrants this product to the original purchaser for its useful life against deficiencies in material and workmanship. This LIMITED LIFETIME WARRANTY does not cover products that are improperly used, abused, altered or repaired. Deficient products will be replaced or repaired.
9. Support and Contact
For further assistance, questions, or warranty claims, please contact STANLEY customer support through their official website or the retailer where the product was purchased.
You can visit the official STANLEY store for more information: STANLEY Official Store





