Precision Twist Drill 091552 Hss Silver Deming Drill Bit

Product Description

The PRECISION TWIST DRILL 091552 is a high-speed steel (HSS) silver and deming jobber-length drill bit with a 1/2 inch reduced parallel shank and a 3-flute design. It is built for special-purpose drilling applications where standard 2-flute bits fall short. The 3-flute geometry increases the number of cutting edges in contact with the material, which improves chip evacuation and helps maintain consistent hole quality at higher feed rates. The HSS construction is selected for its high resistance to abrasion, extending tool life in demanding production and maintenance environments. This bit is used by machinists, maintenance technicians, and industrial tradespeople working with metal substrates.

This drill bit is suited for jobber-length drilling tasks in metalworking, fabrication, and industrial maintenance applications. The reduced 1/2 inch parallel shank allows it to seat in standard drill chucks without requiring a larger-capacity spindle, making it practical for use in both drill presses and hand-held power drills. The silver and deming style is a common choice when drilling large-diameter holes in steel, iron, aluminum, and similar metals where a full-shank bit of the same diameter would not fit the available chuck.

Key Features

• 3-flute design improves chip evacuation and cutting efficiency compared to standard 2-flute bits
• HSS construction provides high abrasion resistance for extended tool life
• 1/2 inch reduced parallel shank fits standard drill chucks across a wide range of equipment
• Jobber length provides versatile reach for most standard drilling depths
• Silver and deming style enables large-diameter hole drilling without oversized equipment

Compatibility

Designed as an OEM-style special-purpose replacement or production drill bit for use in standard drill chucks accommodating a 1/2 inch reduced parallel shank.

Installation Notes

This bit is installed and serviced by machinists and maintenance technicians. Always secure the shank fully in the chuck and confirm the chuck key is removed before energizing the drill. Use appropriate cutting fluid for the workpiece material to reduce heat buildup and extend bit life. Follow applicable shop safety standards and wear rated eye protection when drilling.

Technical Specifications

• Shank Type: 1/2 inch reduced parallel shank
• Flutes: 3
• Style: Silver and Deming
• Length Type: Jobber length
• Material: High-Speed Steel (HSS)
• Weight: 0.45 pounds
• UPC: 086071915528

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 091552