Pro Grade Drill Bushing 9.8mm ID 15mm OD 25mm L C1144 Steel Heat Treated To Rockwell C62 To C64 Made In USA Built Tough For Precision Machining For Tight Tolerances

Single Pro Grade Drill Bushing, 9.8mm ID / 15mm OD / 25mm L
✔️ C1144 steel, heat treated to RC62-64, ID TIR 0 to.0003

This drill bushing is a precision guide component used in jigs and fixtures for drilling operations.

✅ ID tolerance: +0.0001 / -0.0005
✅ Concentricity: 0 to.0003 TIR for ID sizes 1/8 to 1/2 in (3.175 to 12.7 mm), 0 to.0005 TIR for other sizes
✅ Material: C1144 steel, heat treated to RC62-64
✅ Made in USA; blended radius at drill entrance improves entry and alignment

💡 What is a drill bushing used for in precision machining and how does a 9.8mm ID C1144 steel unit support tight tolerances?

In practice, drill bushings act as precise guides in fixtures, keeping drills centered and reducing wear on tooling.

• Guides drills to maintain exact hole location and straight entry
• Hardened C1144 steel resists wear for longer fixture life
• Heat treatment to RC62-64 provides strength without added bulk
• Made in USA using domestic steel for reliable supply

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