Value Collection 01378595 Size 59 Cobalt Drill Bit

Product Description

The VALUE COLLECTION 01378595 is a screw machine length cobalt drill bit designed for high-speed drilling in hard and abrasive materials. Built to a wire gauge size 59 (0.0410 inches decimal), it features a 135-degree split point that reduces walking on entry and requires no center punch for most applications. The two-flute, regular spiral design provides efficient chip evacuation in short-hole drilling. At 1-3/8 inches overall length, the screw machine format offers added rigidity compared to jobber-length bits, making it well suited for drill press and CNC work where reduced deflection matters. Machinists, tool-and-die techs, and maintenance professionals are the primary installers.

This bit is sized for precision small-diameter work, including tapping pilot holes, clearance holes, and light production drilling on ferrous and non-ferrous metals. The cobalt construction with a straw finish provides heat resistance without supplemental coating, making it appropriate for dry cutting or light-oil applications. It is particularly effective in harder steels, stainless, and cast iron where high-speed steel bits wear prematurely. The straight shank fits standard drill chucks and collet holders compatible with the 0.0410-inch diameter.

Key Features

• Wire gauge size 59, 0.0410-inch decimal diameter for precision small-hole work
• 135-degree split point reduces entry walking and eliminates center-punching on most surfaces
• Cobalt tool material provides elevated heat and wear resistance versus standard HSS
• Screw machine length (1-3/8 inches OAL) delivers added rigidity and reduced deflection
• 1/2-inch flute length with regular spiral for efficient chip clearing in short holes
• Right-hand cutting, straight shank — fits standard chucks and collet systems

Compatibility

Designed as an OEM-style replacement or consumable for any drill press, CNC machining center, or hand drill with a chuck or collet accommodating a 0.0410-inch straight shank screw machine drill bit.

Installation Notes

Installed by machinists, maintenance technicians, and metalworking professionals. Secure the straight shank fully in the chuck or collet before operation and verify concentricity to avoid premature tip wear. Use cutting fluid or light machine oil when drilling ferrous metals to extend bit life. Replace the bit at the first sign of chipping or burning, as cobalt bits can fracture if run past their service limit.