Gun Drill Bushing Inserts (GDI)

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Gun Drill Bushing Inserts (GDI) are precision components designed for use with gun drill liner (GDL) bushings in holemaking operations, compatible with El Dorado, DeHoff, and Lahr gun-drilling machines. These inserts fit into liner bushings to create versatile two-piece bushing assemblies. Offering flexibility, a single liner bushing can accommodate various inserts, allowing for quick ID adjustments of drill bushings by simply swapping inserts—ideal for changing drill sizes or replacing worn parts. Installed in fixtures, these bushings accurately guide, position, and support drill bits, ensuring straight, precise holes. They effectively prevent drill wandering or bending upon entry into the workpiece, while optimizing chip clearance and reducing the likelihood of workpiece damage.

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Decimal-Inch Standard-Wall Gun Drill Bushing Inserts

Fractional-Inch Standard-Wall Gun Drill Bushing Inserts

Letter Size Standard-Wall Gun Drill Bushing Inserts

Metric Standard-Wall Gun Drill Bushing Inserts

Wire Size Standard-Wall Gun Drill Bushing Inserts

Decimal-Inch Standard-Wall Gun Drill Bushing Inserts

Precision-engineered for accuracy, our Decimal-Inch Standard-Wall Gun Drill Bushing Inserts (GDI) are available in standard sizes, meticulously measured in decimal inches to ensure perfect fit and performance in your drilling applications.

Fractional Inch

Vendor	Inside Dia.	Drill Size	Inside Dia. Tolerance	Outside Dia.	Outside Dia. Tolerance	Overall Length	Brand	Selling Price

Fractional-Inch Standard-Wall Gun Drill Bushing Inserts

Precision-engineered for accuracy, our Fractional-Inch Standard-Wall Gun Drill Bushing Inserts (GDI) are available in standard fractional-inch sizes, ensuring a perfect fit for your drilling needs.

Fractional Inch

Vendor	Inside Dia.	Drill Size	Inside Dia. Tolerance	Outside Dia.	Outside Dia. Tolerance	Overall Length	Brand	Selling Price

Letter Size Standard-Wall Gun Drill Bushing Inserts

Our Letter Size Standard-Wall Gun Drill Bushing Inserts (GDI) are precision-engineered for optimal compatibility. Each insert is marked with a trade letter size, ensuring seamless integration with tools of the corresponding size for enhanced performance and efficiency.

Letter

Vendor	Inside Dia.	Drill Size	Inside Dia. Tolerance	Outside Dia.	Outside Dia. Tolerance	Overall Length	Brand	Selling Price

Metric Standard-Wall Gun Drill Bushing Inserts

Precision-engineered metric standard-wall gun drill bushing inserts (GDI) are available in standardized millimeter sizes, ensuring optimal performance and durability for your drilling applications.

Metric

Vendor	Inside Dia.	Drill Size	Inside Dia. Tolerance	Outside Dia.	Outside Dia. Tolerance	Overall Length	Brand	Selling Price

Wire Size Standard-Wall Gun Drill Bushing Inserts

Our Standard-Wall Gun Drill Bushing Inserts are precision-engineered to match American Wire Gauge (AWG) sizes, ensuring a perfect fit for your drilling needs. Notably, the insert size inversely correlates with the wire size, offering versatility across applications.

Wire

Vendor	Inside Dia.	Drill Size	Inside Dia. Tolerance	Outside Dia.	Outside Dia. Tolerance	Overall Length	Brand	Selling Price