Drillco Cutting Tools
Nitro® 428N144 4285N Construction Reamer, Imperial, 11/16 in Dia x 6-3/8 in L, 1/2 in Dia Reduced with 3-Flat Shank, Spiral Flute
Part #TRC068
MFG #428N144
UNSPC #23241611
Country Of Origin : 
Nitro® Construction Reamer, Series: 4285N, Imperial, 11/16 in Diameter, 6-3/8 in Overall Length, Reduced with 3-Flat Shank, 1/2 in Shank Diameter, Spiral Flute, 4-1/2 in Flute Length, HSS, Black/Gold
- Manufactured from a premium grade of m-7N molybdenum HSS
- The Nitro® heavy duty construction reamers have a ferritic nitro carburizing surface treatment, which gives a hard, protective layer to the reamer
- This increases hardness (Rc 75 to 80) without increasing brittleness, which is measurably harder than HSS
- Body and clearance are gold and black surface treated for maximum lubricity
Diameter 11/16 in Flute Length 4-1/2 in Overall Length 6-3/8 in Shank Diameter 1/2 in Material High Speed Steel Finish Black Oxide/Gold Oxide Flute Type Spiral Reamer Size Measurement System Imperial Series 4285N Shank Type Reduced with 3-Flat