Hertel 09233818 Screw Machine Drill Bit Set 29 Pc

Product Description

The HERTEL 09233818 is a 29-piece screw machine length drill bit set designed for metalworking and multipurpose drilling applications. Built from high-speed steel (HSS) with an oxide finish, each bit features a 135-degree split-point tip that reduces walking and allows faster penetration without a center punch. The straight shank design is compatible with standard drill chucks. Bit sizes step in 1/64-inch increments from 1/16 inch up to 1/2 inch, covering the full range needed for most production and maintenance drilling tasks. The set ships in a metal or plastic case for organized storage. This is a heavy-duty set suited for professional tradespeople who need consistent, repeatable performance across a range of hole sizes in metal, plastic, and similar materials.

Screw machine length drill bits are shorter and more rigid than jobber-length bits, making them well suited for drill press work, CNC setups, and confined-space hand drilling where deflection and chatter are concerns. This set covers inch-measurement sizing and is appropriate for HVAC, plumbing, electrical, and general mechanical trades that regularly drill through sheet metal, framing hardware, brackets, and equipment enclosures. The 1/16-to-1/2-inch range addresses the most common fastener clearance and pilot hole sizes encountered in field and shop work.

Key Features

• 29-piece set with sizes from 1/16 inch to 1/2 inch in 1/64-inch step increments
• High-speed steel construction for durability in metalworking and multipurpose drilling
• 135-degree split-point tip reduces bit walking and lowers required entry force
• Oxide finish provides corrosion resistance and reduces heat buildup during cutting
• Straight shank fits standard drill chucks without adapters
• Rigid screw machine length reduces deflection compared to jobber-length bits
• Organized metal or plastic storage case included

Compatibility

Designed for use in standard keyed or keyless drill chucks accepting straight-shank bits. Sized in the inch measurement system for metalworking and multipurpose drilling applications.

Installation Notes

Drill bit sets of this type are typically used by HVAC technicians, electricians, plumbers, and general mechanical trades. Always secure the workpiece before drilling and wear appropriate eye protection. Use cutting fluid when drilling hardened or thick steel to extend bit life and reduce heat. Inspect bits for chipping or dullness before use and replace any bit that shows visible wear to maintain hole quality and operator safety.