top of page

Made of special hi-molybdenum tool steel.

Heat treated at 2185 degrees Fahrenheit and then nitro-carburized at - 950 degrees

Measurably harder than standard high-speed steel

Feature a 135 degrees split point for faster penetration and accurate starting without a center punch

The body and clearance of this bit are “gold surface" treated for maximum lubricity

Designed for drilling in harder steels such as stainless

Less brittle than a cobalt bit, so you will not have the problem of chipping

They have ½” shanks (can be used in a ½” keyed chuck drill)

The shanks are flatted to prevent slipping

 

 

Product ID:

3640 - 9/16” Black & Gold Bit

3641 - 5/8” Black & Gold Bit

3642 - 11/16” Black & Gold Bit

3643 - 3/4” Black & Gold Bit

3644 - 13/16” Black & Gold Bit

3645 - 7/8” Black & Gold Bit

3646 - 15/16” Black & Gold Bit

3647 - 1” Black & Gold Bit      

Black & Gold Bit

SKU: 3640
    bottom of page