Value Collection 01198571 Cobalt Jobber Drill Bit No. 57

Product Description

The VALUE COLLECTION 01198571 is a cobalt jobber-length drill bit in wire gauge size No. 57, measuring 0.0430 inches in diameter. Built from heavy-duty cobalt steel with a straw finish, this bit features a 135-degree split point that reduces walking and allows faster penetration without a center punch. The straight shank and regular spiral flute design suit standard three-jaw chucks across a wide range of drill presses and handheld drills. Machinists, tool-and-die technicians, and maintenance mechanics rely on cobalt construction when working through tough materials that would wear out standard high-speed steel bits quickly.

This bit is suited for drilling stainless steel, hardened materials, and other high-strength alloys where heat resistance is critical. The 0.75-inch flute length and 1.75-inch overall length make it appropriate for shallow to moderate-depth holes in tight workspaces or fixtures. It is a practical choice for production environments, job shops, and field maintenance applications requiring precise small-diameter bores in ferrous and hard non-ferrous materials.

Key Features

• Cobalt steel construction provides superior heat resistance for drilling stainless steel and hardened materials
• 135-degree split point reduces thrust and minimizes bit walking on hard surfaces
• Straw finish indicates cobalt content and offers light surface protection
• Regular spiral flute promotes efficient chip evacuation during drilling
• Straight cylindrical shank fits standard three-jaw drill chucks without modification
• Right-hand cutting direction compatible with conventional drill presses and handheld drills

Compatibility

Designed as an OEM-style jobber drill bit replacement for applications requiring wire gauge No. 57 diameter boring in stainless steel and hardened materials using standard straight-shank chucks.

Installation Notes

Cobalt drill bits of this diameter should be installed in a properly tightened three-jaw chuck before powering on any drill press or handheld drill. Use appropriate cutting fluid or coolant when drilling stainless steel to manage heat buildup, even though this bit does not support through-coolant delivery. Operators should wear appropriate eye protection and secure workpieces firmly to prevent movement during drilling. Replace the bit at the first sign of dulling to avoid work hardening the base material.