Value Collection BS27N0021 No. 21 Hss Jobber Drill Bit

Product Description

The VALUE COLLECTION BS27N0021 is a No. 21 wire-gauge jobber-length drill bit designed for general-purpose drilling in aluminum and non-ferrous materials. Manufactured from high speed steel (HSS) with a bright, uncoated finish, the bit features a 130-degree point angle suited for entry control on softer metals. The slow spiral flute geometry helps evacuate chips efficiently from shallow-to-moderate-depth holes. At 3.25 inches overall length with a 2.125-inch flute length, this bit fits standard drill chucks and is a common choice for machinists, pipefitters, and maintenance technicians working with sheet metal, aluminum extrusions, and similar workpieces.

This jobber drill bit is intended for use on aluminum, brass, copper, and other non-ferrous materials where a slow-spiral flute reduces the risk of chip packing and work hardening. The straight cylindrical shank accepts standard three-jaw chucks on benchtop drill presses, handheld power drills, and CNC drill heads. The web-thinned, tapered web configuration reduces thrust force at entry, which is particularly useful when drilling thin-wall stock or when precise hole placement is required. Sold individually, this bit suits toolbox restocking and single-job procurement.

Key Features

• No. 21 wire size, 0.1590 inch decimal diameter for precision hole sizing
• 130-degree point angle provides controlled entry on aluminum and non-ferrous metals
• High speed steel construction offers durability in general-purpose drilling applications
• Slow spiral flute design promotes efficient chip evacuation and reduces packing
• Web-thinned tapered web lowers thrust requirements at drill entry
• Right-hand cutting direction compatible with all standard drill drivers and presses

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard three-jaw chucks accepting a 0.1590-inch straight cylindrical shank. Primary workpiece material compatibility is aluminum and non-ferrous metals per ANSI specification designation.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals following standard workshop safety practices. Secure the workpiece firmly before drilling and confirm the chuck is fully tightened on the straight shank before operation. For drill press applications, set appropriate spindle speed for the workpiece material and bit diameter per published HSS cutting-speed tables. Do not use this bit on hardened steel or masonry materials, as it is rated for non-ferrous applications only.