Product Description
Shimano 10CXS Rod Clamp Bolt(s) (TT0649)
The Shimano 10CXS Rod Clamp Bolt (TT0649) is a high-strength mounting component used to secure large conventional reels to a fishing rod. Labeled as an "accessory" part, these bolts are specifically designed as the shorter variant in Shimano's rod clamp hardware ecosystem.
For offshore anglers, these bolts are a critical safety link. They ensure the reel remains fused to the rod seat during high-drag battles where the pressure could otherwise rip the reel from the reel seat. Constructed from marine-grade stainless steel with a specialized head shape, they are designed to lock into the reel's foot without spinning while you tighten the external nuts.
Product Specifications
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Part Name: Rod Clamp Bolt (S) (Short)
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Part Number: 10CXS
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Shimano Code: TT0649
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Material: 316 Marine-Grade Stainless Steel
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Thread Pitch: M6 (Standard Metric)
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Function: Direct mounting hardware for rod clamp systems.
Alternate Part Numbers
In technical manuals and parts kits, this bolt is cross-referenced as:
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TT0649
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10A7C (Variant often used interchangeably in Talica/Tiagra kits)
Compatibility & Fitment
The 10CXS (TT0649) is the "Short" version of the mounting bolt, typically used for rods with standard-diameter reel seats. It is a direct factory fit for the following series:
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Shimano Tiagra Series: TI-12, TI-16, TI-16A, TI-20A, TI-30A, TI-30WLRSA
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Shimano Talica Series: TAC-12, TAC-16, TAC-20II, TAC-25II
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Shimano Tyrnos Series: TYR-16, TYR-20, TYR-30
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Shimano TLD Series: TLD-20II, TLD-30II
Pro Tip: Shimano reels often come with two sets of bolts: Short (10CXS) and Long. If you are using a heavy-duty salt-water rod with a thick aluminum reel seat or a "long-range" blank, you may need the longer bolt variant (TT0803) instead of this short version to ensure enough thread engagement for the nuts.
Key Features
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"Short" Profile: Optimized for standard reel seats to prevent excess bolt length from snagging your line or hands.
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Corrosion Immunity: High-nickel stainless steel prevents the "frozen bolt" syndrome common in saltwater fishing.
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T-Head Design: The bolt head is specifically shaped to fit into the recessed "keyway" in the reel foot, allowing for one-handed tightening with a wrench.
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OEM Strength: Guaranteed to handle the extreme shear forces generated by 30lbs+ of drag pressure.
Installation Note
When installing these bolts, it is highly recommended to apply a small amount of marine-grade anti-seize or heavy grease to the threads. This prevents "galling" (cold welding) between the stainless bolt and the aluminum or brass nuts. For a complete diagram of the rod clamp assembly, including the Rod Clamp Nut (10JC7) and Bolt Shield (10CAC), refer to the PDF schematics at www.reelschematic.com.
