The Simpson 5/16 in. Lobular Hex Driver Bit is a purpose-built replacement bit designed for use with the Quik Drive auto-feed screw driving system. Its lobular hex head profile and 5/16 in. drive size work together to deliver consistent, positive engagement with compatible Quik Drive screws, keeping your auto-feed system running efficiently through high-volume fastening work.

Key Features

• Lobular hex head profile - provides a more secure grip on compatible screw heads, reducing cam-out and helping extend the working life of the bit during repeated, high-volume driving cycles
• 5/16 in. hex drive size - matches the specific driver-bit configuration required by compatible Quik Drive screws, ensuring proper fit and optimum driving performance
• Engineered for the Quik Drive auto-feed system - designed as a direct replacement to restore full system efficiency when your original bit reaches the end of its service life
• American-made construction - built to the quality standards expected of a Simpson product, supporting reliable performance across a wide range of fastening applications

Why This Product

• Keeps your Quik Drive system at peak performance - having the correct replacement bit on hand means downtime from a worn bit does not slow down your fastening operation
• Correct fit eliminates guesswork - matching the drive type and head profile to your specific Quik Drive screws protects both the bit and the screw heads, reducing waste and rework
• Lobular engagement reduces cam-out risk - the lobular hex design offers a more positive connection than standard profiles, which matters most during continuous, repetitive driving where bit wear accelerates
• Backed by Simpson quality - sourced directly from Simpson, this replacement bit is held to the same standards as the original bit supplied with your Quik Drive screws

Specifications

• Model Number: BITHEXLB516LG
• Drive Type: 5/16 in. Hex
• Head Type: Lobular
• Compatible System: Quik Drive Auto-Feed Screw Driving System
• Country of Origin: United States

Frequently Asked Questions

What is the drive size of the BITHEXLB516LG driver bit?

The BITHEXLB516LG features a 5/16 in. hex drive size, specifically designed for use with compatible Quik Drive screws that require this driver-bit configuration.

How do I know if this is the correct replacement bit for my Quik Drive screws?

To ensure correct driver-bit selection, reference the label on the bit included in your box of Quik Drive screws or check the box label itself. Selecting the wrong bit can negatively affect driving performance and bit longevity.

Why might I need a replacement driver bit if one was included with my Quik Drive screws?

While the bit included in each box of Quik Drive screws is generally sufficient to drive the entire box, variations in materials and driving techniques can shorten driver-bit life. Replacement bits like the BITHEXLB516LG are available to keep your Quik Drive system operating at optimum performance.

What makes the lobular head design beneficial on this driver bit?

The lobular hex head profile provides a more secure, positive engagement between the driver bit and the screw head compared to standard configurations, helping to reduce cam-out and extend bit life during high-volume driving operations with the Quik Drive system.