Mercury MerCruiser Quicksilver 5/16-18 Remote Control Handle Set Screw 91051
In stock items ship same or next day.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Product Description
Mercury Quicksilver 10-91051 is the 5/16-18 set screw used in specified mechanical remote-control handles. The control parts diagrams distinguish it from the smaller 1/4-20 screw used in other handle configurations.
Key Features
- OEM reference: 10-91051.
- Thread: 5/16-18.
- Remote-control handle set screw.
Compatibility and Fitment
Verified in the 1986–1993 manual remote-control Version 2 catalog for assemblies 87728A20 and 94582A20, A21 and A22. It also appears in the 87729A15 control-handle diagram. Confirm the control assembly and handle thread.
Replacement and Installation
Replace a damaged or missing set screw and inspect the handle connection for wear. Use the control-specific securing procedure and verify smooth, positive operation through the full shift and throttle range.
Mercury Parts Finder
Search Mercury parts by serial number or part number.
Parts Desk Insight
Two thread sizes can be shown at the same diagram position. Confirm that the handle takes the 5/16-18 screw before ordering; the 1/4-20 option is a different part.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.