01J018 - Walter SST #18 Cobalt Stub Drill Bit for Stainless Steel

Industrial Grade Rigidity for Sheet Metal Applications

The Walter 01J018 #18 SST Stub Drill is an industrial-grade cutting tool engineered to solve the common frustrations associated with drilling thin gauge metals and hard alloys. In professional manufacturing and MRO environments, standard jobber-length bits often flex and wander, leading to broken tools and oblong holes. This 'stub' or screw machine length drill bit eliminates that flex by shortening the flute and overall length, providing unparalleled rigidity during operation.

Manufactured from a high-performance cobalt blend, this bit is designed to withstand the high temperatures generated when drilling tough materials like stainless steel. The addition of cobalt significantly extends the cutting edge's lifespan compared to standard High-Speed Steel (HSS). Furthermore, Walter's proprietary bronze SST surface treatment reduces friction and aids in smooth chip evacuation, preventing heat buildup that can work-harden the material.

This drill bit features a self-centering split point geometry. This design allows the bit to bite into the material immediately upon contact, eliminating the need for a center punch and preventing the bit from 'walking' across the surface—a critical feature when working with polished sheet metal or rounded surfaces. Whether used in a stationary drill press or a portable hand drill, the Walter 01J018 delivers precise, round holes with minimal burr formation.

Key Technical Benefits

• Maximum Durability: Short flute design resists breakage from lateral force.
• Heat Resistance: Cobalt substrate maintains hardness at high drilling temperatures.
• Precision Starting: Split point tip prevents skating on smooth surfaces.