Chicago-latrobe 48202 Screw Machine Drill Bit 1/32 in

Product Description

The CHICAGO-LATROBE 48202 is a screw machine length drill bit designed for high-precision drilling in metal fabrication and industrial maintenance applications. Built from high speed steel (HSS) with a coated finish, it measures 0.0312 inches (1/32 inch) in diameter and features a 135-degree split point for fast penetration and reduced walking on entry. The overall length is 1-3/8 inches with a 1/2-inch flute length, making it well-suited for close-quarter or stub-length drilling operations. A web-thinned, parallel web configuration reduces thrust and improves chip clearance. This bit is installed by machinists, maintenance technicians, and trade professionals working in metal-heavy environments.

The 48202 is built for drilling cast iron and steel, covering primary workpiece materials common in HVAC equipment fabrication, plumbing system components, and general industrial metalwork. The screw machine length profile is shorter than jobber-length bits, which improves rigidity and accuracy when drilling in drill presses, CNC machines, or handheld power tools where bit deflection is a concern. The right-hand spiral flute promotes efficient chip evacuation during through-hole and blind-hole drilling operations in production or field service settings.

Key Features

• 135-degree split point reduces entry walking and lowers required thrust force
• High speed steel construction with coated finish for extended wear resistance
• Screw machine (stub) length provides greater rigidity than standard jobber bits
• Web-thinned, parallel web configuration improves chip clearance and reduces heat buildup
• Right-hand cut with regular spiral flute suits cast iron and steel workpieces
• Diameter tolerance held to +0.0000 to -0.0005 inches for precision fitment

Compatibility

Rated for primary workpiece materials including cast iron and steel. Meets ISO standards and NAS 907 specification under NAS designation. Part of CHICAGO-LATROBE Series 2159 screw machine length drill bits covering the 0.0000 to 0.1000 inch decimal size range.

Installation Notes

Install in a drill press, CNC spindle, or handheld power drill using an appropriately sized chuck that accommodates a straight-cylindrical shank. Ensure the workpiece is securely clamped before drilling to prevent bit breakage at this small diameter. Coolant-through is not supported on this bit; use cutting fluid applied externally when drilling steel to extend tool life. Follow applicable shop safety practices and ANSI machine guarding requirements during operation.