Product Description
Shimano 10QBF Handle Nut Plate (BNT1663) | Handle Assembly Lock
The Shimano 10QBF Handle Nut Plate (BNT1663) is a small but vital external component for Shimano baitcasting and trolling reels. Its primary job is to act as a locking retainer for the handle nut. By fitting over the nut and being secured with a small screw, it prevents the handle nut from backing off or loosening during the high-vibration and torque-heavy conditions of fishing.
Manufactured from durable, high-impact composite, this plate is a common "wear and tear" item. Over time, the plastic can become brittle from UV exposure or crack if the mounting screw is over-tightened. Replacing a cracked plate is essential to prevent losing your handle assembly mid-fight.
Product Specifications
-
Part Name: Handle Nut Plate / Retainer
-
Shimano Part Number: 10QBF
-
Legacy/Cross-Reference: BNT1663 (replaces BNT1692, BNT1673, and BNT1993)
-
Material: Marine-Grade High-Density Polymer
-
Function: Locks the handle nut in place to ensure drive train stability.
Compatible Reel Models
The 10QBF (BNT1663) is a highly versatile part used across several of Shimano's most famous reel families. It is a direct fit for:
-
Shimano Calcutta: CT-100, CT-400, CT-400B, CT-400BSV, CT-700B, CT-700S, CT-700BSV.
-
Shimano Curado: CU-100B, CU-101B (Select B-series models).
-
Shimano Corvalus: CVL-301, CVL-401 (Left-hand models often use this with specific nuts).
-
Shimano Crestfire: CR-100D.
-
Shimano Corsair: Select CS models (Verify by schematic).
Technical Tip: This plate is usually paired with the Handle Nut Plate Screw (BNT0795 / 10QG1). If you are replacing the plate because it fell off, check if the screw is still present, as it is easily lost. You can verify the exact assembly for your model at www.reelschematic.com.
Maintenance & Lubrication Recommendation
While the plate itself is plastic, the screw and the nut it protects are metal. To prevent the small mounting screw from seizing or the plastic from becoming brittle, we recommend Deuthlon Lubricants:
-
For the Mounting Screw Threads: Apply a tiny amount of Deuthlon Reel Gear Grease to the threads of the BNT0795 screw. This prevents the stainless screw from "cold-welding" to the handle arm, making future maintenance much easier.
-
For the Nut Interface: A light wipe of Deuthlon Power Cast Oil on the handle nut before installing the plate will help shed water and prevent salt crystals from forming in the gaps between the plate and the nut.
Why Choose Genuine Shimano 10QBF?
-
Precision Hex Alignment: Specifically molded to fit the exact flat-to-flat dimensions of Shimano handle nuts, ensuring no "slop" or play.
-
UV Stability: Unlike generic 3D-printed parts, the OEM composite is treated to resist the sun-bleaching and brittleness common in saltwater environments.
-
Safety Fail-Safe: Using the correct plate ensures the handle nut stays put, protecting your drive shaft threads from being stripped by a loose handle.
