Mortise Router Bits
Place your order for Whiteside Router bits before 2:30pm ET Mon-Fri to have your order ship same Day!

Mortise Bits
| Cutting Diameter | Cutting Length | Overall Length | Part Number |
|---|---|---|---|
| 1/4" SHANK | |||
| 1/2" | 3/4" | 2 1/8" | 1300 |
| 5/8" | 3/4" | 2 1/8" | 1301 |
| 3/4" | 3/4" | 2 1/8" | 1302 |
| 1 1/4" | 1/2" | 2 1/8" | 1303 |
| 1/2" SHANK | |||
| 3/4" | 5/8" | 2 1/4" | 1302A |
| 1 1/4" | 1/2" | 2 1/8" | 1304 |
If you need a square corner on your mortise, use Whiteside's Square Corner Chisel.

Screw Type Helix Mortise
With Downshear - Cutter Only
| Cutting Diameter | Cutting Length | Overall Length | Part Number | |
|---|---|---|---|---|
| Fractional | Decimal | |||
| 1/2" | 0.5 | 5/8" | 7/8" | 13-500 |
| 33/64" | 0.515 | 5/8" | 7/8" | 13-515 |
| 17/32" | 0.531 | 5/8" | 7/8" | 13-531 |
| 9/16" | 0.562 | 5/8" | 7/8" | 13-562 |
| 5/8" | 0.625 | 5/8" | 7/8" | 13-625 |
| 41/64" | 0.64 | 5/8" | 7/8" | 13-640 |
| 21/32" | 0.656 | 5/8" | 7/8" | 13-656 |
| 11/16" | 0.687 | 5/8" | 7/8" | 13-687 |
| 23/32" | 0.719 | 5/8" | 7/8" | 13-719 |
| 3/4" | 0.75 | 5/8" | 7/8" | 13-750 |
| 49/64" | 0.765 | 5/8" | 7/8" | 13-765 |
| 25/32" | 0.781 | 5/8" | 7/8" | 13-781 |
| 13/16" | 0.812 | 5/8" | 7/8" | 13-812 |
| 7/8" | 0.875 | 5/8" | 7/8" | 13-875 |
| 15/16" | 0.937 | 5/8" | 7/8" | 13-937 |
| 1" | 1 | 1/2" | 1/2" | 13-1000 |
| 1 1/8" | 1.125 | 1/2" | 1/2" | 13-1125 |
| 1 1/4" | 1.25 | 1/2" | 1/2" | 13-1250 |
| 1 1/4" | 1.25 | 1/2" | 1/2" | *13-1250A |
*13-1250A supplied with 5/16"-24 threads All others supplied with 1/4"-28 threads.
Special Cutting Diameters Available by Special Order.

Helix Mortise Arbors
| Shank Diameter | Thread | Overall Length | Part Number |
|---|---|---|---|
| 1/4" | 1/4"-28 | 1 3/4" | HMA-1/4 |
| 1/2" | 1/4"-28 | 1 3/4" | HMA-1/2 |
| 1/4" | 5/16"-24 | 1 3/4" | * HMA-1/4A |
| 1/2" | 5/16"-24 | 1 3/4" | * HMA-1/2A |
* Fits #13-1250A only
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Whiteside
Downcut Threaded Mortise Cutter, 1-1/4 Dia, 1/2 Cut Length, Whiteside 13-1250Screw Type, Helix Mortise With Downshear (Cutter Only) - Whiteside 13-1250; 1-1/4 Cutting Diameter, …
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Downcut Threaded Mortise Cutter, 1-1/8 Dia, 1/2 Cut Length, Whiteside 13-1125Screw Type, Helix Mortise With Downshear (Cutter Only) - Whiteside 13-1125; 1-1/8 Cutting Diameter, …
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Downcut Threaded Mortise Cutter, 1" Dia, 1/2 Cut Length, Whiteside 13-1000Screw Type, Helix Mortise With Downshear (Cutter Only) - Whiteside 13-1000; 1 Cutting Diameter, 1/2 …
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2 Flute Straight Bit, 3/4 Dia, 5/8 Cut Length, 1/2 Shank, Whiteside 1302AStraight Cut, Router Bits (Mortising) - 1/2 Shank, 2 Flute, Carbide Tipped - Whiteside 1302A; 3/4 Cu…
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2 Flute Straight Bit, 1-1/4 Dia, 1/2 Cut Length, 1/2 Shank, Whiteside 1304Straight Cut, Router Bits (Mortising) - 1/2 Shank, 2 Flute, Carbide Tipped - Whiteside 1304; 1-1/4 C…
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Mortise Bit, 1-1/4 Dia, 1/2 Cut Length, 1/4 Shank, Whiteside 1303Mortise Router Bits - 1/4 Shank - Whiteside 1303; 1-1/4 Cutting Diameter, 1/2 Cutting Length, 2-1/8 …
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Mortise Bit, 3/4 Dia, 3/4 Cut Length, 1/4 Shank, Whiteside 1302Mortise Router Bits - 1/4 Shank - Whiteside 1302; 3/4 Cutting Diameter, 3/4 Cutting Length, 2-1/8 Ov…
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Mortise Bit, 5/8 Dia, 3/4 Cut Length, 1/4 Shank, Whiteside 1301Mortise Router Bits - 1/4 Shank - Whiteside 1301; 5/8 Cutting Diameter, 3/4 Cutting Length, 2-1/8 Ov…
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