45° Lock Miter Router Bit — 8 mm (5/16″) Shank | Woodworking Joinery Cutter - product detail view

lock miter router bits shown from the side with 8 mm shanks

45-degree lock miter router bit with 8 mm shank, bearing and yellow cutter body

three 8 mm shank lock miter router bits in a diagonal product view

45° Lock Miter Router Bit — 8 mm (5/16″) Shank | Woodworking Joinery Cutter

Name: 45° Lock Miter Router Bit — 8 mm (5/16") Shank | Woodworking Joinery Cutter - BitsRouter – Professional Woodworking Router Bits
SKU: RTE1786
Availability: InStock

Price range: $4.80 through $18.34

45-degree lock miter router bit with an 8 mm (5/16 inch) shank and bearing-guided profile. Gallery drawings show 8 × 14 × 30 mm, 8 × 16 × 40 mm and 8 × 16 × 50 mm options; confirm the selected dimensions and joint setup before ordering.

type

8mm shank – Four-edge bit 8x14x30mm
8mm shank – Four-edge bit 8x16x40mm
8mm shank – Four-edge bit 8x16x50mm
8mm shank – Four-edge bit 3-piece set

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SKU: RTE1786 Category: 8 mm Shank Router Bits

Description
Additional information

This 45-degree lock miter router bit is listed with an 8 mm (5/16 inch) shank and bearing-guided cutter. The gallery shows several size options and a cabinet-joint example. Choose the option whose cutting dimensions match the stock thickness and joint drawing.

Listed dimensions

Gallery label	What to confirm
8 × 14 × 30 mm	14 mm profile dimension, 30 mm cutting-length label
8 × 16 × 40 mm	16 mm profile dimension, 40 mm cutting-length label
8 × 16 × 50 mm	16 mm profile dimension, 50 mm cutting-length label

The labels above are transcribed from the product gallery. Verify the exact option, bearing position, stock thickness and available clearance before machining.

Lock-miter setup

Match the 8 mm shank to the router collet or spindle holder.
Set the fence, cutter height and workpiece orientation from a test joint; the mating edge is different for the two pieces.
Use secure workholding and keep the bearing or guide clear of dust and obstructions.
Confirm the stock thickness against the selected gallery dimension rather than assuming all options are interchangeable.

Test cut and safe use

Make a test cut in matching scrap, then check the 45-degree faces, joint closure, shoulder alignment and edge breakout before cutting finished panels. Follow the router and cutter manufacturer’s speed, feed, guarding and installation instructions. Stop if the bit chatters, overheats or shows damage.

Product images

45-degree lock miter router bit dimension diagram, 8 x 14 x 30 mm

four-cutter lock miter router bit with 8 mm shank and cabinet joint illustration

three lock miter router bits showing bearings and cutting edges

8 mm shank lock miter router bit set with cabinet joint illustration

lock miter router bit dimension diagram, 8 x 16 x 50 mm

lock miter router bit dimension diagram, 8 x 16 x 40 mm

For a compatibility check, send the router or spindle model, collet size, stock thickness and target joint dimensions to sales@bitsrouter.com.

type	8mm shank – Four-edge bit 8x14x30mm, 8mm shank – Four-edge bit 8x16x40mm, 8mm shank – Four-edge bit 8x16x50mm, 8mm shank – Four-edge bit 3-piece set