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20D404 Expansion Reamers

$123.36

Bulk orders will be discounted, please contact us.

Straight shank expansion reamers mount to the chuck of a drill press or similar machining tool. Use them to enlarge or finish an existing hole to a precise tolerance or size. An adjustment screw on the reamer expands the size of the cutting head so it can be reground to its original size, which extends the life of the reamer by allowing the operator to compensate for wear on the reamer's cutting edge.

Product Number: 20D404

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  • Description
Mfr Model 431-0.375
Flute Type Straight
Shank Dia 5/16 in
Flute Length 3/4 in
Overall Length 7 in
Number of Flutes 6
Shank Type Machining Straight
Cutting Direction Machining Right Hand
Material Machining High Speed Steel
Finish Machining Bright (Uncoated)
Measurement System Fractional Inch
Reamer Application Through Hole
UNSPSC 23171610
Country of Origin USA (subject to change)
Cutting Dia Tolerance +0.0001 in /+0.0004 in
Primary Material Application All Materials
Reamer Size 3/8 in
Reamer Size Decimal Equivalent 0.3750
Coolant Fed Non-Coolant Through
Mode of Operation Machine

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