Precision Twist Drill 6000021 R57 5/8 in High Speed Steel Reduced Shank Silver & Deming Drill Bit

The Precision Twist Drill 6000021 is a R57 Series Silver & Deming reduced shank drill bit designed for general-purpose drilling applications. Featuring a 5/8 in (0.625 in) cutting diameter with a 1/2 in reduced shank, this drill bit allows larger-diameter holes to be drilled using standard 1/2 in chucks — making it a versatile addition to any shop or job site.

Key Features:

• 5/8 in cutting diameter (0.625 in decimal) for heavy-duty hole making
• 1/2 in round shank with 3 flats — securely locks into standard drill chucks and prevents slipping
• High Speed Steel (HSS) construction — suitable for drilling magnetic soft steel, structural steel, cast iron, and other common materials
• Combination black oxide and bright (uncoated) finish — provides improved lubricity, corrosion resistance, and reduces chipping or flaking
• 118° conventional split point angle — optimized for general-purpose drilling in a wide range of materials
• 3 in length of cut (LOC) with a 6 in overall length (OAL)
• Spiral flute design with right-hand cutting direction
• Non-coolant through design

The Precision Twist Drill R57 Series Silver & Deming drill bits are engineered for reliable performance in industrial, commercial, and manufacturing environments. Precision Twist Drill, a brand of Dormer Pramet, has delivered quality cutting tools since 1952 and is trusted across aerospace, automotive, and general machining applications.