Chicago-Latrobe
Chicago-Latrobe 52439 39/64 in 118 Degree Silver & Deming Drill with 1/2 Reduced Shank
A 39/64 inch high-speed steel drill bit with a 118 degree point angle, black oxide finish and a reduced 1/2 inch shank
- TypeDrill Bits
- 39/64 inch diameter drills large holes in one pass
- 118-degree point angle starts cleanly without walking on metal
- High-speed steel body resists heat during extended cutting
- Black oxide finish reduces friction and chip welding
- 1/2-inch reduced shank fits standard drill chucks securely
39/64 inch Silver & Deming Drill Bit
The Chicago-Latrobe 52439 is a high-speed steel drill bit with a 118-degree point angle and a black oxide finish. It features a reduced 1/2 inch shank designed for use in drill chucks that cannot accommodate a full-sized shank. This accessory targets machinists and maintenance technicians who need to drill large holes with standard capacity drill presses or handheld drills.
1/2 inch Reduced Shank Compatibility
The reduced shank allows this large-diameter bit to fit into a 1/2 inch chuck, overcoming the standard limitation where chuck capacity restricts maximum bit size. Users must ensure their drill press or handheld drill provides sufficient torque and rigidity for a 39/64 inch cutting diameter. The 118-degree point angle is suited for general-purpose drilling in metal but requires appropriate feed pressure to prevent walking on hard surfaces.
39/64 inch Drill Bit Size
The specific 39/64 inch diameter determines if this bit matches the required hole size for the application, such as tapping or clearance drilling. Buyers needing a different fractional, metric, or letter size must select another bit, as this product only fulfills this single diameter requirement. The high-speed steel construction and black oxide finish support general metalworking but do not suit hardened steel or high-volume production without frequent resharpening.
Highlights
- 39/64 inch diameter drills large holes in one pass
- 118-degree point angle starts cleanly without walking on metal
- High-speed steel body resists heat during extended cutting
- Black oxide finish reduces friction and chip welding
- 1/2-inch reduced shank fits standard drill chucks securely
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
Should I choose the 39/64 in size or another capacity?
This drill bit is offered in a single 39/64 in diameter; select it when that exact hole size is required.
What does the 118 degree point angle mean when drilling?
The 118 degree point is a general-purpose geometry that centres easily in steel and other common metals.
How does the 1/2 in reduced shank affect compatibility?
The shank is turned down to 1/2 in so the bit fits standard 1/2 in drill chucks despite the larger cutting diameter.
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