Product Description

HIMANO 106BK SIDE PLATE NUT (A/S PLTNUT)

Secure Your Round Reel's Frame

The Shimano 106BK Side Plate Nut is a specialized hardware component found on the larger sizes of Shimano’s round baitcasting reels, specifically the Cardiff and Corvalus 400 sizes. This nut (often referred to in parts lists as "A/S PLTNUT") is responsible for securing the handle-side plate to the main reel frame.

Unlike smaller baitcasters that use bayonet locks or standard screws, the heavy-duty 400-size round reels often utilize these robust nuts to ensure the side plate does not flex or separate under the torque of a heavy load. If this nut is stripped, lost, or corroded, the structural integrity of the reel is compromised, leading to gear misalignment.

Product Specifications

• Part Name: Side Plate Nut (A/S PLTNUT)

• Manufacturer: Shimano

• Part Number (MPN): 106BK (Schematic Location Code, often used as the order number)

   

• Alt. Part Number: May cross-reference to BNT3786 or similar depending on the specific year, but 106BK is the primary identifier for the 2005+ generation.

• Material: Nickel-Plated Brass / Stainless Steel

• Installation Position: Handle Side Plate (Secures the plate to the frame posts)

Compatible Models

This part is specific to the 400-size (Large Capacity) round reels produced around the 2005 generation ("05" code) and the "Core" (likely referring to Corvalus in your specific database list, as the low-profile Core reel does not use this part).

• Shimano Cardiff A Series:

  • 05 CDF 400 A (Cardiff 400A)

  • CDF 401 A (Left Hand)

     

• Shimano Corvalus Series:

  • CVL 400 (Corvalus 400)

  • CVL 401

• Shimano Catala (Select Models):

  • Check specific schematic for compatibility.

Installation & Reference

To ensure this is the correct nut for your reel, please cross-reference the code 106BK with your reel's service diagram.

• Schematic Diagrams: For detailed PDF schematics and part location verification, please visit www.reelschematic.com.

• Database Note: In many parts lists, "CORE" next to this part refers to the Corvalus compatibility, not the "Core MG/MGL" low-profile reel.

Installation Tip: These nuts thread onto the frame posts that protrude through the side plate.

1. Do Not Overtighten: While they need to be snug, overtightening can strip the threads on the aluminum frame post, which is a much more expensive repair (requiring a new frame).

2. Grease: Apply a small amount of marine grease to the threads to prevent saltwater corrosion from seizing the nut to the frame.