Precision Twist Drill 6000050 SPR-90 5/8 in High-Speed Steel Spotting Drill Bit, 90°, Bright Finish

The Precision Twist Drill SPR-90 5/8 in Spotting Drill (MPN: 6000050) is a jobber-length, high-speed steel spotting drill designed for accurate hole starting, chamfering, and center-drilling operations in a wide range of materials. Part of Precision Twist Drill's trusted SPR-90 series, this bit delivers reliable precision in demanding machining environments.

Key Features:

• Drill Diameter: 5/8 in (0.625 in)
• Point Angle: 90° conventional point — ideal for spotting holes and producing accurate 90° chamfers to accommodate standard screws
• Overall Length: 7 in
• Flute Length: 1-5/8 in
• Material: High-Speed Steel (HSS) for durability and heat resistance
• Surface Finish: Bright (uncoated) — prevents workpiece material from sticking to cutting surfaces for enhanced accuracy
• Shank: Round, straight shank
• Flute Style: Spiral flute
• Hand of Cut: Right-hand cut
• Style: Jobber length
• ANSI Ordering Code: SPR-905/8
• Sold as: 1 per pack

The SPR-90 series is a highly versatile spotting drill suitable for use on most common workpiece materials, including aluminum, steel, stainless steel, and cast iron. The accurate 90° point angle ensures consistent chamfer production and precise hole location before follow-up drilling operations.

Precision Twist Drill, a brand of Dormer Pramet, has been manufacturing quality cutting tools for precision engineering environments — including aerospace and automotive applications — since 1952.