Sunex 3646 3/8 Inch Drive Low Profile Impact Hex Driver Set

Product Overview

The Sunex 3646 Low Profile Impact Hex Driver Set is a 16-piece collection designed for durability and access in confined spaces. This set includes both SAE and Metric sizes, ranging from 1/4-inch to 3/4-inch and 6mm to 19mm, respectively. Each hex driver is forged from high-quality Molybdenum alloy steel, ensuring strength and resilience for use with high-torque impact tools. The innovative radius corner design allows the socket to engage with the sturdy wall or flat of the fastener, minimizing wear on the fastener's corners.

Key features include solid one-piece construction to eliminate weak points, dual laser-etched and roll-stamped size markings for permanent identification, and a heavy-duty storage case for convenient transport and organization. All components meet ANSI standards, guaranteeing reliable performance.

Image: The Sunex 3646 16-piece hex driver set neatly organized within its durable red storage case. The case is open, displaying the full range of SAE and Metric drivers.

Setup

Upon receiving your Sunex 3646 Hex Driver Set, inspect the contents to ensure all 16 pieces are present and in good condition. The drivers are pre-oiled from the factory to prevent rust during storage and transit; this is normal and does not require removal before initial use. The set is organized within a heavy-duty molded case, with each driver securely held in its designated slot. Familiarize yourself with the layout of the SAE (Imperial) and Metric sizes for quick identification during use.

Image: Two Sunex 3646 hex driver sets, one in a black case and one in a red case, demonstrating potential color variations of the storage case. Both cases are open, showing the organized drivers.

Operating Instructions

These low-profile hex drivers are designed for use with 3/8-inch drive impact tools. To operate:

1. Select the Correct Size: Identify the appropriate SAE or Metric hex driver for your fastener. The drivers feature dual size markings (laser-etched and roll-stamped) for clear and lasting identification.
2. Attach to Impact Tool: Securely attach the selected hex driver to your 3/8-inch drive impact tool. Ensure it clicks firmly into place on the hog ring or pin detent of the tool's anvil.
3. Engage Fastener: Position the hex driver squarely onto the fastener. The low-profile design allows for access in tight or confined spaces where standard hex sockets might not fit.
4. Apply Torque: Activate your impact tool to apply torque. The Cr-Mo steel construction and solid one-piece design provide the necessary strength and flexibility to handle high-torque applications without stripping or rounding the fastener.
5. Remove Driver: Once the task is complete, remove the hex driver from the fastener and then from the impact tool.

The radius corner design of these drivers ensures that force is applied to the flats of the fastener, reducing the risk of rounding corners and extending the life of both the driver and the fastener.

Image: A close-up view of the 16-piece set, clearly showing the individual SAE (1/4" to 3/4") and Metric (6mm to 19mm) hex drivers, highlighting their 3/8" drive compatibility.

Image: Three individual hex drivers demonstrating their solid one-piece construction, which enhances durability and eliminates common weak points found in multi-part designs.

Image: A Sunex hex driver attached to an impact tool, engaging a fastener in a tight space, illustrating the low-profile design and the strength of Cr-Mo steel in high-torque applications.

Maintenance

To ensure the longevity and optimal performance of your Sunex 3646 Hex Driver Set, follow these maintenance guidelines:

• Cleaning: After each use, wipe down the hex drivers to remove any dirt, grease, or debris. A clean cloth is usually sufficient. For stubborn grime, a mild degreaser can be used, followed by thorough drying.
• Lubrication: The drivers come pre-oiled. Periodically apply a light coat of rust-preventative oil to the metal surfaces, especially if stored in humid environments, to maintain their condition and prevent corrosion.
• Storage: Always store the hex drivers in their original heavy-duty storage case. This protects them from damage, keeps them organized, and prevents loss. Ensure the case is closed securely.
• Inspection: Before each use, quickly inspect each driver for any signs of wear, damage, or deformation. Discontinue use of any damaged drivers to prevent injury or further damage to fasteners.

Troubleshooting

While the Sunex 3646 Hex Driver Set is designed for robust performance, here are some common issues and their solutions:

• Driver Slipping or Rounding Fastener:
  • Ensure you are using the correct size hex driver for the fastener. A slightly incorrect size can lead to slippage and damage.
  • Verify the hex driver is fully seated into the fastener before applying torque.
  • Check the hex driver for wear or damage. If the hex bit itself is rounded or worn, it should be replaced.
• Difficulty Attaching to Impact Tool:
  • Ensure the 3/8-inch drive anvil of your impact tool is clean and free of debris.
  • For hog ring anvils, apply firm pressure until the driver snaps into place. For pin detent anvils, ensure the pin aligns with the hole on the driver.
• Rust or Corrosion:
  • This can occur if drivers are stored in humid conditions or not properly cleaned and oiled after use. Refer to the Maintenance section for preventative measures. Light rust can often be removed with fine steel wool and re-oiling.

Specifications

Warranty and Support

The Sunex 3646 Low Profile Impact Hex Driver Set is backed by a Lifetime Warranty. This warranty covers manufacturing defects and material flaws under normal use. Please note that the lifetime warranty does not cover abuse or misuse of the tools.

For warranty claims, technical assistance, or any product-related inquiries, please refer to the official Sunex Tools website or contact their customer support directly. Keep your purchase receipt as proof of purchase may be required for warranty service.