Chicago-Latrobe
Chicago-Latrobe 78487 7/32 in 118° Carbide Spade Drill
Solid carbide spade drill with a 7/32 inch diameter and 118-degree point angle for general-purpose machining
- 7/32 in drill size matches precise fractional-inch requirements
- 118° point angle centres the bit quickly on contact
- Solid carbide construction resists wear in abrasive materials
- Bright uncoated finish allows clear inspection of cutting edges
- Decimal equivalent .2188 simplifies metric-to-inch conversion
Drill Bit Size and Angle
The Chicago-Latrobe 78487 is a solid carbide spade drill bit with a 7/32 inch cutting diameter and a 118 degree point angle. It is intended for machinists and maintenance technicians who need a rigid, wear-resistant tool for short-hole drilling in abrasive or hardened materials.
Carbide Material Limits
Solid carbide construction provides high hardness and heat resistance but is brittle compared with high-speed steel. The tool must be used in a rigid setup with minimal runout; any vibration or interrupted cut can cause the cutting edges to chip or the body to fracture.
Bright Uncoated Finish
The bright, uncoated surface means no additional lubricity or oxidation barrier is present. Users must supply appropriate cutting fluid or coolant for the workpiece material, and the bit is not suited for high-speed dry drilling where built-up edge would degrade hole quality.
Highlights
- 7/32 in drill size matches precise fractional-inch requirements
- 118° point angle centres the bit quickly on contact
- Solid carbide construction resists wear in abrasive materials
- Bright uncoated finish allows clear inspection of cutting edges
- Decimal equivalent .2188 simplifies metric-to-inch conversion
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
Should I choose the 7/32 in size or another fractional inch option for my drilling job?
The 7/32 in size equals a 0.2188 decimal equivalent and suits holes of that exact diameter; select a different fractional size only if your application requires another specific hole size.
How does the 118 degree point angle affect drilling performance in metal?
The 118 degree point angle is a general-purpose geometry that centres well and cuts efficiently in steel, cast iron and similar materials when used at proper speeds and feeds.
What does the solid carbide material mean for tool life and cutting speed?
Solid carbide construction provides high wear resistance and heat tolerance, allowing faster cutting speeds and longer tool life than high-speed steel in abrasive or hardened workpieces.
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